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1. End-to-End simulation framework for astronomical spectrographs: SOXS, CUBES and ANDES

Author

Scaudo, A., Genoni, M., Causi, G. Li, Cabona, L., Landoni, M., Campana, S., Schipani, P., Claudi, R., Aliverti, M., Baruffolo, A., Ben-Ami, S., Biondi, F., Capasso, G., Cosentino, R., D'Alessio, F., D'Avanzo, P., Hershko, O., Kuncarayakti, H., Munari, M., Santhakumari, K. Radhakrishnan, Pignata, G., Rubin, A., Scuderi, S., Vitali, F., Young, D., Achrén, J., Araiza-Duran, J. A., Arcavi, I., Battaini, F., Brucalassi, A., Bruch, R., Cappellaro, E., Colapietro, M., Della Valle, M., De Pascale, M., Di Benedetto, R., D'Orsi, S., Gal-Yam, A., Hernandez, M., Kotilainen, J., Marty, L., Mattila, S., Rappaport, M., Ricci, D., Riva, M., Salasnich, B., Smartt, S., Sanchez, R. Zanmar, Stritzinger, M., Ventura, H., Cupani, G., Porru, M., Franchini, M., Cirami, R., Calderone, G., Covino, S., Smiljanic, R., Monteiro, M., Balestra, A., Sordo, R., Mason, E., Rousseu, S., Leão, I. de Castro, Zanutta, A., Martins, A. de Meideros, Sosnowska, D., Marquart, T., Boisse, I., Sousa, S., Hernandez, J., Piskunov, N., Puschnig, J., Senna, N., Martins, B., Di Marcantonio, P., and Marconi, A.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

We present our numerical simulation approach for the End-to-End (E2E) model applied to various astronomical spectrographs, such as SOXS (ESO-NTT), CUBES (ESO-VLT), and ANDES (ESO-ELT), covering multiple wavelength regions. The E2E model aim at simulating the expected astronomical observations starting from the radiation of the scientific sources (or calibration sources) up to the raw-frame data produced by the detectors. The comprehensive description includes E2E architecture, computational models, and tools for rendering the simulated frames. Collaboration with Data Reduction Software (DRS) teams is discussed, along with efforts to meet instrument requirements. The contribution to the cross-correlation algorithm for the Active Flexure Compensation (AFC) system of CUBES is detailed., Comment: 19 pages, 17 figures, SPIE Astronomical Telescopes + Instrumentation, Yokohama 2024. arXiv admin note: text overlap with arXiv:2209.07185, arXiv:2012.12684

Published
2024

2. ANDES, the high resolution spectrograph for the ELT: science goals, project overview and future developments

Author

Marconi, A., Abreu, M., Adibekyan, V., Alberti, V., Albrecht, S., Alcaniz, J., Aliverti, M., Prieto, C. Allende, Gómez, J. D. Alvarado, Alves, C. S., Amado, P. J., Amate, M., Andersen, M. I., Antoniucci, S., Artigau, E., Bailet, C., Baker, C., Baldini, V., Balestra, A., Barnes, S. A., Baron, F., Barros, S. C. C., Bauer, S. M., Beaulieu, M., Bellido-Tirado, O., Benneke, B., Bensby, T., Bergin, E. A., Berio, P., Biazzo, K., Bigot, L., Bik, A., Birkby, J. L., Blind, N., Boebion, O., Boisse, I., Bolmont, E., Bolton, J. S., Bonaglia, M., Bonfils, X., Bonhomme, L., Borsa, F., Bouret, J. -C., Brandeker, A., Brandner, W., Broeg, C. H., Brogi, M., Brousseau, D., Brucalassi, A., Brynnel, J., Buchhave, L. A., Buscher, D. F., Cabona, L., Cabral, A., Calderone, G., Calvo-Ortega, R., Cantalloube, F., Martins, B. L. Canto, Carbonaro, L., Caujolle, Y., Chauvin, G., Chazelas, B., Cheffot, A. -L., Cheng, Y. S., Chiavassa, A., Christensen, L., Cirami, R., Cirasuolo, M., Cook, N. J., Cooke, R. J., Coretti, I., Covino, S., Cowan, N., Cresci, G., Cristiani, S., Parro, V. Cunha, Cupani, G., D'Odorico, V., Dadi, K., Leão, I. de Castro, De Cia, A., De Medeiros, J. R., Debras, F., Debus, M., Delorme, A., Demangeon, O., Derie, F., Dessauges-Zavadsky, M., Di Marcantonio, P., Di Stefano, S., Dionies, F., de Souza, A. Domiciano, Doyon, R., Dunn, J., Egner, S., Ehrenreich, D., Faria, J. P., Ferruzzi, D., Feruglio, C., Fisher, M., Fontana, A., Frank, B. S., Fuesslein, C., Fumagalli, M., Fusco, T., Fynbo, J., Gabella, O., Gaessler, W., Gallo, E., Gao, X., Genolet, L., Genoni, M., Giacobbe, P., Giro, E., Goncalves, R. S., Gonzalez, O. A., Hernández, J. I. González, Gouvret, C., Temich, F. Gracia, Haehnelt, M. G., Haniff, C., Hatzes, A., Helled, R., Hoeijmakers, H. J., Hughes, I., Huke, P., Ivanisenko, Y., Järvinen, A. S., Järvinen, S. P., Kaminski, A., Kern, J., Knoche, J., Kordt, A., Korhonen, H., Korn, A. J., Kouach, D., Kowzan, G., Kreidberg, L., Landoni, M., Lanotte, A. A., Lavail, A., Lavie, B., Lee, D., Lehmitz, M., Li, J., Li, W., Liske, J., Lovis, C., Lucatello, S., Lunney, D., MacIntosh, M. J., Madhusudhan, N., Magrini, L., Maiolino, R., Maldonado, J., Malo, L., Man, A. W. S., Marquart, T., Marques, C. M. J., Marques, E. L., Martinez, P., Martins, A., Martins, C. J. A. P., Martins, J. H. C., Maslowski, P., Mason, C. A., Mason, E., McCracken, R. A., Sousa, M. A. F. Melo e, Mergo, P., Micela, G., Milaković, D., Molliere, P., Monteiro, M. A., Montgomery, D., Mordasini, C., Morin, J., Mucciarelli, A., Murphy, M. T., N'Diaye, M., Nardetto, N., Neichel, B., Neri, N., Niedzielski, A. T., Niemczura, E., Nisini, B., Nortmann, L., Noterdaeme, P., Nunes, N. J., Oggioni, L., Olchewsky, F., Oliva, E., Onel, H., Origlia, L., Ostlin, G., Ouellette, N. N. -Q., Palle, E., Papaderos, P., Pariani, G., Pasquini, L., Castro, J. Peñate, Pepe, F., Peroux, C., Levasseur, L. Perreault, Perruchot, S., Petit, P., Pfuhl, O., Pino, L., Piqueras, J., Piskunov, N., Pollo, A., Poppenhaeger, K., Porru, M., Puschnig, J., Quirrenbach, A., Rauscher, E., Rebolo, R., Redaelli, E. M. A., Reffert, S., Reid, D. T., Reiners, A., Richter, P., Riva, M., Rivoire, S., Rodriguez-López, C., Roederer, I. U., Romano, D., Roth, M., Rousseau, S., Rowe, J., Saccardi, A., Salvadori, S., Sanna, N., Santos, N. C., Diaz, P. Santos, Sanz-Forcada, J., Sarajlic, M., Sauvage, J. -F., Savio, D., Scaudo, A, Schäfer, S., Schiavon, R. P., Schmidt, T. M., Selmi, C., Simoes, R., Simonnin, A., Sivanandam, S., Sordet, M., Sordo, R., Sortino, F., Sosnowska, D., Sousa, S. G., Spang, A., Spiga, R., Stempels, E., Stevenson, J. R. Y., Strassmeier, K. G., Mascareño, A. Suárez, Sulich, A., Sun, X., Tanvir, N. R., Tenegi-Sangines, F., Thibault, S., Thompson, S. J., Tisserand, P., Tozzi, A., Turbet, M., Veran, J. -P., Vallee, P., Vanni, I., Varas, R., Vega-Moreno, A., Venn, K. A., Verma, A., Vernet, J., Viel, M., Wade, G., Waring, C., Weber, M., Weder, J., Wehbe, B., Weingrill, J., Woche, M., Xompero, M., Zackrisson, E., Zanutta, A., Osorio, M. R. Zapatero, Zechmeister, M., and Zimara, J.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The first generation of ELT instruments includes an optical-infrared high-resolution spectrograph, indicated as ELT-HIRES and recently christened ANDES (ArmazoNes high Dispersion Echelle Spectrograph). ANDES consists of three fibre-fed spectrographs ([U]BV, RIZ, YJH) providing a spectral resolution of $\sim$100,000 with a minimum simultaneous wavelength coverage of 0.4-1.8 $\mu$m with the goal of extending it to 0.35-2.4 $\mu$m with the addition of a U arm to the BV spectrograph and a separate K band spectrograph. It operates both in seeing- and diffraction-limited conditions and the fibre feeding allows several, interchangeable observing modes including a single conjugated adaptive optics module and a small diffraction-limited integral field unit in the NIR. Modularity and fibre-feeding allow ANDES to be placed partly on the ELT Nasmyth platform and partly in the Coud\'e room. ANDES has a wide range of groundbreaking science cases spanning nearly all areas of research in astrophysics and even fundamental physics. Among the top science cases, there are the detection of biosignatures from exoplanet atmospheres, finding the fingerprints of the first generation of stars, tests on the stability of Nature's fundamental couplings, and the direct detection of the cosmic acceleration. The ANDES project is carried forward by a large international consortium, composed of 35 Institutes from 13 countries, forming a team of almost 300 scientists and engineers which include the majority of the scientific and technical expertise in the field that can be found in ESO member states., Comment: SPIE astronomical telescope and instrumentation 2024, in press

Published
2024

3. Exploring the ultra-hot Jupiter WASP-178b. Constraints on atmospheric chemistry and dynamics from a joint retrieval of VLT/CRIRES$^+$ and space photometric data

Author

Cont, D., Nortmann, L., Yan, F., Lesjak, F., Czesla, S., Lavail, A., Reiners, A., Piskunov, N., Hatzes, A., Boldt-Christmas, L., Kochukhov, O., Marquart, T., Nagel, E., Rains, A. D., Rengel, M., Seemann, U., and Shulyak, D.

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

Despite recent progress in the spectroscopic characterization of individual exoplanets, the atmospheres of key ultra-hot Jupiters (UHJs) still lack comprehensive investigations. These include WASP-178b, one of the most irradiated UHJs known to date. We observed the dayside emission signal of this planet with CRIRES$^+$ in the spectral K-band. By applying the cross-correlation technique and a Bayesian retrieval framework to the high-resolution spectra, we identified the emission signature of $^{12}$CO (S/N = 8.9) and H$_2$O (S/N = 4.9), and a strong atmospheric thermal inversion. A joint retrieval with space-based secondary eclipse measurements from TESS and CHEOPS allows us to refine our results on the thermal profile and thus to constrain the atmospheric chemistry, yielding a solar to super-solar metallicity (1.4$\pm$1.6 dex) and a solar C/O ratio (0.6$\pm$0.2). We infer a significant excess of spectral line broadening and identify a slight Doppler-shift between the $^{12}$CO and H$_2$O signals. These findings provide strong evidence for a super-rotating atmospheric flow pattern and suggest the possible existence of chemical inhomogeneities across the planetary dayside hemisphere. In addition, the inclusion of photometric data in our retrieval allows us to account for stellar light reflected by the planetary atmosphere, resulting in an upper limit on the geometric albedo (0.23). The successful characterization of WASP-178b's atmosphere through a joint analysis of CRIRES$^+$, TESS, and CHEOPS observations highlights the potential of combined studies with space- and ground-based instruments and represents a promising avenue for advancing our understanding of exoplanet atmospheres., Comment: Accepted for publication in A&A

Published
2024

4. Determination of small-scale magnetic fields on Sun-like stars in the near-infrared using CRIRES$^+$

Author

Hahlin, A., Kochukhov, O., Rains, A. D., Lavail, A., Hatzes, A., Piskunov, N., Reiners, A., Seemann, U., Boldt-Christmas, L., Guenther, E. W., Heiter, U., Nortmann, L., Yan, F., Shulyak, D., Smoker, J. V., Rodler, F., Bristow, P., Dorn, R. J., Jung, Y., Marquart, T., and Stempels, E.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

We aim to characterise the small-scale magnetic fields for a sample of 16 Sun-like stars and investigate the capabilities of the newly upgraded near-infrared (NIR) instrument CRIRES$^+$ at the VLT in the context of small-scale magnetic field studies. Our targets also had their magnetic fields studied in the optical, which allows us to compare magnetic field properties at different spatial scales on the stellar surface and to contrast small-scale magnetic field measurements at different wavelengths. We analyse the Zeeman broadening signature for six magnetically sensitive and insensitive \ion{Fe}{I} lines in the H-band to measure small-scale magnetic fields on the stellar surface. We use polarised radiative transfer modelling and NLTE departure coefficients in combination with MCMC to determine magnetic field characteristics together with non-magnetic stellar parameters. We use two different approaches to describe small-scale magnetic fields. The first is a two-component model with a single magnetic region and a free magnetic field strength. The second model contains multiple magnetic components with fixed magnetic field strengths. We find average magnetic field strengths ranging from $\sim 0.4$ kG down to $<0.1$ kG. The results align closely with other results from high resolution NIR spectrographs such as SPIRou. We find that the small-scale fields correlate with the large-scale fields and that the small-scale fields are at least 10 times stronger than the large-scale fields inferred with Zeeman Doppler imaging. The two- and multi-component models produce systematically different results as the strong fields from the multi-component model increase the obtained mean magnetic field strength. When comparing our results with the optical measurements of small-scale fields we find a systematic offset of 2--3 times stronger fields in the optical., Comment: 28 pages, 23 figures, accepted by A&A

Published
2023
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5. CRIRES+ detection of CO emissions lines and temperature inversions on the dayside of WASP-18b and WASP-76b

Author

Yan, F., Nortmann, L., Reiners, A., Piskunov, N., Hatzes, A., Seemann, U., Shulyak, D., Lavail, A., Rains, A. D., Cont, D., Rengel, M., Lesjak, F., Nagel, E., Kochukhov, O., Czesla, S., Boldt-Christmas, L., Heiter, U., Smoker, J. V., Rodler, F., Bristow, P., Dorn, R. J., Jung, Y., Marquart, T., and Stempels, E.

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

The dayside atmospheres of ultra-hot Jupiters (UHJs) are predicted to possess temperature inversion layers with extremely high temperatures at high altitudes. We observed the dayside thermal emission spectra of WASP-18b and WASP-76b with the new CRIRES+ high-resolution spectrograph at near-infrared wavelengths. Using the cross-correlation technique, we detected strong CO emission lines in both planets, which confirms the existence of temperature inversions on their dayside hemispheres. The two planets are the first UHJs orbiting F-type stars with CO emission lines detected; previous detections were mostly for UHJs orbiting A-type stars. Evidence of weak H2O emission signals is also found for both planets. We further applied forward-model retrievals on the detected CO lines and retrieved the temperature-pressure profiles along with the CO volume mixing ratios. The retrieved logarithmic CO mixing ratio of WASP-18b (-2.2) is slightly higher than the value predicted by the self-consistent model assuming solar abundance. For WASP-76b, the retrieved CO mixing ratio (-3.6) is broadly consistent with the value of solar abundance. In addition, we included the equatorial rotation velocity (Veq ) in the retrieval when analyzing the line profile broadening. The obtained Veq is 7.0 km/s for WASP-18b and 5.2 km/s for WASP-76b, which are consistent with the tidally locked rotational velocities., Comment: 11 pages, 12 figures; accepted for publication in A&A

Published
2023
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6. CRIRES$^{+}$ on sky at the ESO Very Large Telescope

Author

Dorn, R. J., Bristow, P., Smoker, J. V., Rodler, F., Lavail, A., Accardo, M., Ancker, M. van den, Baade, D., Baruffolo, A., Courtney-Barrer, B., Blanco, L., Brucalassi, A., Cumani, C., Follert, R., Haimerl, A., Hatzes, A., Haug, M., Heiter, U., Hinterschuster, R., Hubin, N., Ives, D. J., Jung, Y., Jones, M., Kirchbauer, J-P., Klein, B., Kochukhov, O., Korhonen, H. H., Köhler, J., Lizon, J-L., Moins, C., Molina-Conde, I., Marquart, T., Neeser, M., Oliva, E., Pallanca, L., Pasquini, L., Paufique, J., Piskunov, N., Reiners, A., Schneller, D., Schmutzer, R., Seemann, U., Slumstrup, D., Smette, A., Stegmeier, J., Stempels, E., Tordo, S., Valenti, E., Valenzuela, J. J., Vernet, J., Vinther, J., and Wehrhahn, A.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The CRyogenic InfraRed Echelle Spectrograph (CRIRES) Upgrade project CRIRES$^{+}$ extended the capabilities of CRIRES. It transformed this VLT instrument into a cross-dispersed spectrograph to increase the wavelength range that is covered simultaneously by up to a factor of ten. In addition, a new detector focal plane array of three Hawaii 2RG detectors with a 5.3 $\mu$m cutoff wavelength replaced the existing detectors. Amongst many other improvements, a new spectropolarimetric unit was added and the calibration system has been enhanced. The instrument was installed at the VLT on Unit Telescope 3 at the beginning of 2020 and successfully commissioned and verified for science operations during 2021, partly remotely from Europe due to the COVID-19 pandemic. The instrument was subsequently offered to the community from October 2021 onwards. This article describes the performance and capabilities of the upgraded instrument and presents on sky results., Comment: Accepted for publication in Astronomy and Astrophysics

Published
2023
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7. End to end simulators: A flexible and scalable Cloud-Based architecture. Application to High Resolution Spectrographs ESPRESSO and ELT-HIRES

Author

Genoni, M., Landoni, M., Pariani, G., Riva, M., Bianco, A., Causi, G. Li, Marquart, T., Pepe, F. A., Marconi, A., and Oliva, E.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

Simulations of frames from existing and upcoming high-resolution spectrographs, targeted for high accuracy radial velocity measurements, are computationally demanding (both in time and space). We present in this paper an innovative approach based on both parallelization and distribution of the workload. By using NVIDIA CUDA custom-made kernels and state-of-the-art cloud-computing architectures in a Platform as a Service (PaaS) approach, we implemented a modular and scalable end-to-end simulator that is able to render synthetic frames with an accuracy of the order of few cm/sec, while keeping the computational time low. We applied our approach to two spectrographs. For VLT-ESPRESSO we give a sound comparison between the actual data and the simulations showing the obtained spectral formats and the recovered instrumental profile. We also simulate data for the upcoming HIRES at the ELT and investigate the overall performance in terms of computational time and scalability against the size of the problem. In addition we demonstrate the interface with data-reduction systems and we preliminary show that the data can be reduced successfully by existing methods., Comment: Accepted for publication in Experimental Astronomy

Published
2020

8. Concept and optical design of the cross-disperser module for CRIRES+

Author

Oliva, E., Tozzi, A., Ferruzzi, D., Origlia, L., Hatzes, A., Follert, R., Loewinger, T., Piskunov, N., Heiter, U., Lockhart, M., Marquart, T., Stempels, E., Reiners, A., Anglada-Escude, G., Seemann, U., Dorn, R. J., Bristow, P., Baade, D., Delabre, B., Gojak, D., Grunhut, J., Klein, B., Hilker, M., Ives, D. J., Jung, Y., Kaeufl, H. U., Kerber, F., Lizon, J. L., Pasquini, L., Paufique, J., Pozna, E., Smette, A., Smoker, J., and Valenti, E.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

CRIRES, the ESO high resolution infrared spectrometer, is a unique instrument which allows astronomers to access a parameter space which up to now was largely uncharted. In its current setup, it consists of a single-order spectrograph providing long-slit, single-order spectroscopy with resolving power up to R=100,000 over a quite narrow spectral range. This has resulted in sub-optimal efficiency and use of telescope time for all the scientific programs requiring broad spectral coverage of compact objects (e.g. chemical abundances of stars and intergalactic medium, search and characterization of extra-solar planets). To overcome these limitations, a consortium was set-up for upgrading CRIRES to a cross-dispersed spectrometer, called CRIRES+. This paper presents the updated optical design of the crossdispersion module for CRIRES+. This new module can be mounted in place of the current pre-disperser unit. The new system yields a factor of >10 increase in simultaneous spectral coverage and maintains a quite long slit (10"), ideal for observations of extended sources and for precise sky-background subtraction., Comment: 14 pages, 9 figures, 22 tables. Presented at SPIE Astronomical Telescope + Instrumentation 2014 (Ground-based and Airbone Instrumentation for Astronomy 5, 9147-289). To be published in Proceeding of SPIE Volume 9147

Published
2014
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9. ANDES, the high resolution spectrograph for the ELT: the software ecosystem

Author

Ibsen, Jorge, Chiozzi, Gianluca, Landoni, M., Monteiro, M. A., Di Marcantonio, P., Zanutta, A., Origlia, L., Mason, E., Cirami, R., Baldini, V., Balestra, A., Calderone, G., Coretti, I., Cupani, G., Geers, V. C., Järvinen, A. S., Kaminski, A., Knoche, J., Liske, J., MacIntosh, M., Marquart, T., Marconi, A., Rousseu, S., Sanna, N., Scaudo, A., and Sosnowska, D.

Published
2024
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10. The integral field spectroscopy (IFS) wiki

Author

Westmoquette, M. S., Exter, K. M., Christensen, L., Maier, M., Lemoine-Busserolle, M., Turner, J., and Marquart, T.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

In this article we present the integral field spectroscopy (IFS) wiki site, http://ifs.wikidot.com; what the wiki is, our motivation for creating it, and a short introduction to IFS. The IFS wiki is designed to be a central repository of information, tips, codes, tools, references, etc., regarding the whole subject of IFS, which is accessible and editable by the whole community. Currently the wiki contains a broad base of information covering topics from current and future integral field spectrographs, to observing, to data reduction and analysis techniques. We encourage everyone who wants to know more about IFS to look at this web-site, and any question you may have you can post from there. And if you have had any experience with IFS yourself, we encourage you to contribute your knowledge and help the site develop its full potential. Before re-inventing the wheel, consult the wiki..., Comment: This article accompanies the opening of the IFS wiki site http://ifs.wikidot.com

Published
2009

11. Star-gas decoupling and a non-rotating stellar core in He 2-10: Integral field spectroscopy with FLAMES/ARGUS

Author

Marquart, T., Fathi, K., Östlin, G., Bergvall, N., Cumming, R. J., and Amram, P.

Subjects
Astrophysics
Abstract

We study the two-dimensional distribution and kinematics of the stellar and gaseous components in the centre of the blue compact dwarf galaxy, He 2-10. The aim is to compare the kinematics of gas and stars in order to determine whether they are consistent with one another, or if stars and gas can be decoupled due to gravitational perturbations and feedback from star formation. We have used the integral field unit ARGUS, part of FLAMES on the European Southern Observatory's Very Large Telescope, to target the near-infrared Ca-triplet in the central 300 times 480 parsecs of He 2-10. The selected wavelength regime includes several prominent spectral features, including the Paschen series and an [SIII] emission-line, which we have used to derive the kinematics of the ionised interstellar medium. We find no systematic trend in the velocities of the stars over the observed field of view and conclude that the stellar kinematics is governed by random motions. This is in contrast to the motions the ionised interstellar medium, where we find spatial velocity variations up to 60 km/s. Our gas velocity field is consistent with previous studies of both the molecular gas and the feedback-driven outflow in He 2-10. We interpret the kinematic decoupling between the stars and the gas as He 2-10 being in the process of transformation to a dwarf elliptical galaxy., Comment: 4 pages, 3 figures, accepted for publication in A&A Letters, resubmitted with minor revisions

Published
2007
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12. 3D spectroscopy with VLT/GIRAFFE - II: Are Luminous Compact Galaxies merger remnants ?

Author

Puech, M., Hammer, F., Flores, H., Ostlin, G., and Marquart, T.

Subjects
Astrophysics
Abstract

Luminous Compact Galaxies are enigmatic sources by many aspects. They can reach the luminosity of the Milky Way within a radius of only a few kpc. They also represent one of the most rapidly evolving populations of galaxies since they represent up to 1/5 of the luminous galaxies at redshift z= 0.7 while being almost absent in the local Universe. The measurement of their dynamics is crucial to our understanding of LCGs since this has the potential of telling us which physical process(es) that drives them, and ultimately to link them to the existing present-day galaxies. Here we derive the 3 dimensional velocity fields and velocity dispersion (sigma) maps of 17 Luminous Compact Galaxies selected from the Canada France Redshift Survey and the Hubble Deep Field South with redshifts ranging from z=0.4 to z=0.75. We find that only 18% of them show rotational velocity fields typical of rotating disks, the others showing more complex kinematics. Assuming that LCGs are not too far from equilibrium, about half of LCGs then appear to be either non-relaxed objects, or objects that are not supported by velocity dispersion alone. This supports the view that an important fraction of LCGs are probably mergers. It brings additional support to the ``spiral rebuilding scenario'' in which LCGs correspond to a previous or post-merger phase before the disk re-building., Comment: (1) GEPI, Obs. Meudon, France (2) Stockholm Observatory, Sweden (3)Dept. of Astronomy and Space Physics, Sweden. ;. See also the ESO press release http://www.eso.org/outreach/press-rel/pr-2006/pr-10-06.html. To appear in A&A

Published
2006
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13. The dark matter halos of the bluest low surface brightness galaxies

Author

Zackrisson, E., Bergvall, N., Marquart, T., and Ostlin, G.

Subjects
Astrophysics
Abstract

We present BVI photometry and long-slit Halpha rotation curve data obtained with ESO VLT/FORS2 for six low surface brightness galaxies with extremely blue colours and very faint central regions. We find no evidence for a steep central density cusp of the type predicted by many N-body simulations of cold dark matter (CDM) halos. Our observations are instead consistent with dark matter halos characterized by cores of roughly constant density, in agreement with previous investigations. While unremarkable in terms of the central density slope, these galaxies appear very challenging for existing CDM halo models in terms of average central halo density, as measured by the Delta_(V/2) parameter. Since most of our target galaxies are bulgeless disks, our observations also disfavour a recently suggested mechanism for lowering the central mass concentration of the halo by means of a fast collapse phase, as this scenario predicts that the original CDM profile should still be detectable in bulgeless galaxies. Other potential ways of reconciling the CDM predictions with these observations are discussed., Comment: 14 pages, 9 figures, accepted for publication in Astronomy & Astrophysics

Published
2006
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14. Supernova 2006aj and the associated X-Ray Flash 060218

Author

Sollerman, J., Jaunsen, A. O., Fynbo, J. P. U., Hjorth, J., Jakobsson, P., Stritzinger, M., Feron, C., Laursen, P., Ovaldsen, J. -E., Selj, J., Thöne, C. C., Xu, D., Davis, T., Gorosabel, J., Watson, D., Duro, R., Ilyin, I., Jensen, B. L., Lysfjord, N., Marquart, T., Nielsen, T. B., Näränen, J., Schwarz, H. E., Walch, S., Wold, M., and Östlin, G.

Subjects
Astrophysics
Abstract

We have studied the afterglow of the gamma-ray burst (GRB) of February 18, 2006. This is a nearby long GRB, with a very low peak energy, and is therefore classified as an X-ray Flash (XRF). XRF 060218 is clearly associated with a supernova -- dubbed SN 2006aj. We present early spectra for SN 2006aj as well as optical lightcurves reaching out to 50 days past explosion. Our optical lightcurves define the rise times, the lightcurve shapes and the absolute magnitudes in the U, V and R bands, and we compare these data with data for other relevant supernovae. SN 2006aj evolved quite fast, somewhat similarly to SN 2002ap, but not as fast as SN 1994I. Our spectra show the evolution of the supernova over the peak, when the U-band portion of the spectrum rapidly fades due to extensive line blanketing. We compare to similar spectra of very energetic Type Ic supernovae. Our first spectra are earlier than spectra for any other GRB-SN. The spectrum taken 12 days after burst in the rest frame is similar to somewhat later spectra of both SN 1998bw and SN 2003dh, implying a rapid early evolution. This is consistent with the fast lightcurve. From the narrow emission lines from the host galaxy we derive a redshift of z=0.0331+-0.0007. This makes XRF 060218 the second closest gamma-ray burst detected. The flux of these emission lines indicate a high-excitation state, and a modest metallicity and star formation rate of the host galaxy., Comment: Accepted by A&A. Replaced with revised version. More observations added

Published
2006
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15. Modelling the red halos of blue compact galaxies

Author

Zackrisson, E., Bergvall, N., Marquart, T., Mattsson, L., and Ostlin, G.

Subjects
Astrophysics
Abstract

Optical/near-IR broadband photometry of the halos of blue compact galaxies (BCGs) have revealed a very red spectral energy distribution, which cannot easily be reconciled with any normal, metal-poor stellar population. Here, three possible explanations for the red excess are explored: nebular emission, metal-rich stars and a stellar population with a very bottom-heavy initial mass function (IMF). We find, that nebular emission in BCG halos would produce very blue near-IR colours, and hence fails to explain the observed red excess. Although metal-rich stars may in principle explain the colours observed, the required stellar metallicity is very high (solar or higher), which would be a curious halo property given the low gas metallicity (~10% solar) of the central starburst in these objects. A stellar population with a low to intermediate metallicity and a very bottom-heavy IMF does however adequately reproduce the observed BCG halo colours. A bottom-heavy IMF also proves successful in explaining a similar red excess observed in the halos of stacked edge-on disk galaxies from the Sloan Digital Sky Survey. This may indicate that halos dominated by low-mass stars is a phenomenon common to galaxies of very different Hubble types., Comment: 6 pages, 4 figures, proceedings of the conference "Starbursts: From 30 Doradus to Lyman Break Galaxies", held in Cambridge, UK, September 6-10, 2004

Published
2004

16. Determination of small-scale magnetic fields on Sun-like stars in the near-infrared using CRIRES+

Author

Hahlin, A., primary, Kochukhov, O., additional, Rains, A.D., additional, Lavail, A., additional, Hatzes, A., additional, Piskunov, N., additional, Reiners, A., additional, Seemann, U., additional, Boldt-Christmas, L., additional, Guenther, E. W., additional, Heiter, U., additional, Nortmann, L., additional, Yan, F., additional, Shulyak, D., additional, Smoker, J. V., additional, Rodler, F., additional, Bristow, P., additional, Dorn, R. J., additional, Jung, Y., additional, Marquart, T., additional, and al, et, additional

Published
2023
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17. CRIRES+ detection of CO emissions lines and temperature inversions on the dayside of WASP-18b and WASP-76b

Author

Yan, F., primary, Nortmann, L., additional, Reiners, A., additional, Piskunov, N., additional, Hatzes, A., additional, Seemann, U., additional, Shulyak, D., additional, Lavail, A., additional, Rains, A. D., additional, Cont, D., additional, Rengel, M., additional, Lesjak, F., additional, Nagel, E., additional, Kochukhov, O., additional, Czesla, S., additional, Boldt-Christmas, L., additional, Heiter, U., additional, Smoker, J. V., additional, Rodler, F., additional, Bristow, P., additional, Dorn, R. J., additional, Jung, Y., additional, Marquart, T., additional, and Stempels, E., additional

Published
2023
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18. CRIRES+ on sky at the ESO Very Large Telescope

Author

Dorn, R. J., primary, Bristow, P., additional, Smoker, J. V., additional, Rodler, F., additional, Lavail, A., additional, Accardo, M., additional, van den Ancker, M., additional, Baade, D., additional, Baruffolo, A., additional, Courtney-Barrer, B., additional, Blanco, L., additional, Brucalassi, A., additional, Cumani, C., additional, Follert, R., additional, Haimerl, A., additional, Hatzes, A., additional, Haug, M., additional, Heiter, U., additional, Hinterschuster, R., additional, Hubin, N., additional, Ives, D. J., additional, Jung, Y., additional, Jones, M., additional, Kaeufl, H.-U., additional, Kirchbauer, J.-P., additional, Klein, B., additional, Kochukhov, O., additional, Korhonen, H. H., additional, Köhler, J., additional, Lizon, J-L., additional, Moins, C., additional, Molina-Conde, I., additional, Marquart, T., additional, Neeser, M., additional, Oliva, E., additional, Pallanca, L., additional, Pasquini, L., additional, Paufique, J., additional, Piskunov, N., additional, Reiners, A., additional, Schneller, D., additional, Schmutzer, R., additional, Seemann, U., additional, Slumstrup, D., additional, Smette, A., additional, Stegmeier, J., additional, Stempels, E., additional, Tordo, S., additional, Valenti, E., additional, Valenzuela, J. J., additional, Vernet, J., additional, Vinther, J., additional, and Wehrhahn, A., additional

Published
2023
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19. Determination of small-scale magnetic fields on Sun-like stars in the near-infrared using CRIRES

Author

Ministerio de Ciencia e Innovación (España), European Commission, Swedish Research Council, Hahlin, A., Kochukhov, O., Rains, A. D., Lavail, A., Hatzes, Artie P., Piskunov, N., Reiners, Ansgar, Seemann, U., Boldt-Christmas, L., Guenther, E. W., Heiter, U., Nortmann, L., Yan, F., Shulyak, D., Smoker, J. V., Rodler, F., Bristow, P., Dorn, R. J., Jung, Y., Marquart, T., Stempels, E., Ministerio de Ciencia e Innovación (España), European Commission, Swedish Research Council, Hahlin, A., Kochukhov, O., Rains, A. D., Lavail, A., Hatzes, Artie P., Piskunov, N., Reiners, Ansgar, Seemann, U., Boldt-Christmas, L., Guenther, E. W., Heiter, U., Nortmann, L., Yan, F., Shulyak, D., Smoker, J. V., Rodler, F., Bristow, P., Dorn, R. J., Jung, Y., Marquart, T., and Stempels, E.

Abstract

Aims. We aim to characterise the small-scale magnetic fields of a sample of 16 Sun-like stars and investigate the capabilities of the newly upgraded near-infrared (NIR) instrument CRIRES+ at the Very Large Telescope in the context of small-scale magnetic field studies. Our targets also had their magnetic fields studied with optical spectra, which allowed us to compare magnetic field properties at different spatial scales on the stellar surface and to contrast small-scale magnetic field measurements at different wavelengths. Methods. We analysed the Zeeman broadening signature for six magnetically sensitive and insensitive Fe I lines in the H-band to measure small-scale magnetic fields on the stellar surfaces of our sample. We used polarised radiative transfer modelling and non-local thermodynamic equilibrium departure coefficients in combination with Markov chain Monte Carlo sampling to determine magnetic field characteristics and non-magnetic stellar parameters. We used two different approaches to describe the small-scale magnetic fields. The first is a two-component model with a single magnetic region and a free magnetic field strength. The second model contains multiple magnetic components with fixed magnetic field strengths. Results. We found average magnetic field strengths ranging from ∼0.4 kG down to < 0.1 kG. The results align closely with other results from high-resolution NIR spectrographs, such as SPIRou. It appears that the typical magnetic field strength in the magnetic region is slightly stronger than 1.3 kG, and for most stars in our sample, this strength is between 1 and 2 kG. We also found that the small-scale fields correlate with the large-scale fields and that the small-scale fields are at least ten times stronger than the large-scale fields inferred with Zeeman Doppler imaging. The two- and multi-component models produce systematically different results, as the strong fields from the multi-component model increase the obtained mean magnetic fiel

Published
2023

21. ANDES, the high resolution spectrograph for the ELT: science case, baseline design and path to construction

Author

Marconi, Alessandro, primary, Abreu, M., additional, Adibekyan, V., additional, Alberti, V., additional, Albrecht, S., additional, Alcaniz, J., additional, Aliverti, M., additional, Allende Prieto, C., additional, Alvarado Gómez, J. D., additional, Amado, P. J., additional, Amate, M., additional, Andersen, M. I., additional, Artigau, E., additional, Baker, C., additional, Baldini, V., additional, Balestra, A., additional, Barnes, S. A., additional, Baron, F., additional, Barros, S. C. C., additional, Bauer, S. M., additional, Beaulieu, M., additional, Bellido-Tirado, O., additional, Benneke, B., additional, Bensby, T., additional, Bergin, E. A., additional, Biazzo, K., additional, Bik, A., additional, Birkby, J., additional, Blind, N., additional, Boisse, I., additional, Bolmont, E., additional, Bonaglia, M., additional, Bonfils, X., additional, Borsa, F., additional, Brandeker, A., additional, Brandner, W., additional, Broeg, C. H., additional, Brogi, M., additional, Brousseau, D., additional, Brucalassi, A., additional, Brynnel, J., additional, Buchhave, L. A., additional, Buscher, D. F., additional, Cabral, A., additional, Calderone, G., additional, Calvo-Ortega, R., additional, Canto Martins, B. L., additional, Cantalloube, F., additional, Carbonaro, L., additional, Chauvin, G., additional, Chazelas, B., additional, Cheffot, A.-L., additional, Cheng, Y. S., additional, Chiavassa, A., additional, Christensen, L., additional, Cirami, R., additional, Cook, N. J., additional, Cooke, R. J., additional, Coretti, I., additional, Covino, S., additional, Cowan, N., additional, Cresci, G., additional, Cristiani, S., additional, Cunha Parro, V., additional, Cupani, G., additional, D'Odorico, V., additional, de Castro Leão, I., additional, De Cia, A., additional, De Medeiros, J. R., additional, Debras, F., additional, Debus, M., additional, Demangeon, O., additional, Dessauges-Zavadsky, M., additional, Di Marcantonio, P., additional, Dionies, F., additional, Doyon, R., additional, Dunn, J., additional, Ehrenreich, D., additional, Faria, J. P., additional, Feruglio, C., additional, Fisher, M., additional, Fontana, A., additional, Fumagalli, M., additional, Fusco, T., additional, Fynbo, J., additional, Gabella, O., additional, Gaessler, W., additional, Gallo, E., additional, Gao, X., additional, Genolet, L., additional, Genoni, M., additional, Giacobbe, P., additional, Giro, E., additional, Gonçalves, R. S., additional, Gonzalez, O., additional, González Hernández, J. I., additional, Gracia Témich, F., additional, Haehnelt, M. G., additional, Haniff, C., additional, Hatzes, A., additional, Helled, R., additional, Hoeijmakers, H.J., additional, Huke, P., additional, Järvinen, S., additional, Järvinen, A., additional, Kaminski, A., additional, Korn, A., additional, Kouach, D., additional, Kowzan, Grzegorz, additional, Kreidberg, L., additional, Landoni, M., additional, Lanotte, A., additional, Lavail, A., additional, Li, J., additional, Liske, J., additional, Lovis, C., additional, Lucatello, S., additional, Lunney, D., additional, MacIntosh, M., additional, Madhusudhan, N., additional, Magrini, L., additional, Maiolino, R., additional, Malo, L., additional, Man, A., additional, Marquart, T., additional, Marques, E. L., additional, Martins, A. M., additional, Martins, C. J. A. P., additional, Maslowski, P., additional, Mason, C., additional, Mason, E., additional, McCracken, R. A., additional, Mergo, P., additional, Micela, G., additional, Mitchell, T., additional, Mollière, P., additional, Monteiro, M., additional, Montgomery, D., additional, Mordasini, C., additional, Morin, J., additional, Mucciarelli, A., additional, Murphy, M. T., additional, N'Diaye, M., additional, Neichel, B., additional, Niedzielski, A. T., additional, Niemczura, E., additional, Nortmann, L., additional, Noterdaeme, P., additional, Nunes, N., additional, Oggioni, L., additional, Oliva, E., additional, Önel, H., additional, Origlia, L., additional, Östlin, G., additional, Palle, E., additional, Papaderos, P., additional, Pariani, G., additional, Peñate Castro, J., additional, Pepe, F., additional, Perreault Levasseur, L., additional, Petit, P., additional, Pino, L., additional, Piqueras, J., additional, Pollo, A., additional, Poppenhaeger, K., additional, Quirrenbach, A., additional, Rauscher, E., additional, Rebolo, R., additional, Redaelli, E. M. A., additional, Reffert, S., additional, Reid, D. T., additional, Reiners, A., additional, Richter, P., additional, Riva, M., additional, Rivoire, S., additional, Rodríguez-López, C., additional, Roederer, I. U., additional, Romano, D., additional, Rousseau, Sylvain, additional, Rowe, J., additional, Salvadori, S., additional, Santos, N., additional, Santos Diaz, P., additional, Sanz-Forcada, J., additional, Sarajlic, Mirsad, additional, Sauvage, J.-F., additional, Schäfer, S., additional, Schiavon, R. P., additional, Schmidt, T. M., additional, Selmi, C., additional, Sivanandam, S., additional, Sordet, M., additional, Sordo, R., additional, Sortino, F., additional, Sosnowska, D., additional, Sousa, S. G., additional, Stempels, E., additional, Strassmeier, K. G., additional, Suárez Mascareño, A., additional, Sulich, A., additional, Sun, X., additional, Tanvir, N.R., additional, Tenegi-Sanginés, F., additional, Thibault, S., additional, Thompson, S. J., additional, Tozzi, A., additional, Turbet, M., additional, Vallée, P., additional, Varas, R., additional, Venn, K., additional, Véran, J.-P., additional, Verma, A., additional, Viel, M., additional, Wade, G., additional, Waring, C., additional, Weber, M., additional, Weder, J., additional, Wehbe, B., additional, Weingrill, J., additional, Woche, M., additional, Xompero, M., additional, Zackrisson, E., additional, Zanutta, A., additional, Zapatero Osorio, M. R., additional, Zechmeister, M., additional, and Zimara, J., additional

Published
2022
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24. ANDES, the high resolution spectrograph for the ELT: science case, baseline design and path to construction

Author

Evans, Christopher J., Bryant, Julia J., Motohara, Kentaro, Marconi, A., Abreu, M., Adibekyan, V., Alberti, V., Albrecht, S., Alcaniz, J., Aliverti, M., Prieto, C. Allende, Gómez, J. D. Alvarado, Amado, P. J., Amate, M., Andersen, M. I., Artigau, E., Baker, C., Baldini, V., Balestra, A., Barnes, S. A., Baron, F., Barros, S. C. C., Bauer, S. M., Beaulieu, M., Bellido-Tirado, O., Benneke, B., Bensby, T., Bergin, E. A., Biazzo, K., Bik, A., Birkby, J. L., Blind, N., Boisse, I., Bolmont, E., Bonaglia, M., Bonfils, X., Borsa, F., Brandeker, A., Brandner, W., Broeg, C. H., Brogi, M., Brousseau, D., Brucalassi, A., Brynnel, J., Buchhave, L. A., Buscher, D. F., Cabral, A., Calderone, G., Calvo-Ortega, R., Martins, B. L. Canto, Cantalloube, F., Carbonaro, L., Chauvin, G., Chazelas, B., Cheffot, A.-L., Cheng, Y. S., Chiavassa, A., Christensen, L., Cirami, R., Cook, N. J., Cooke, R. J., Coretti, I., Covino, S., Cowan, N., Cresci, G., Cristiani, S., Parro, V. Cunha, Cupani, G., D'Odorico, V., Leão, I. de Castro, Cia, A. De, Medeiros, J. R. De, Debras, F., Debus, M., Demangeon, O., Dessauges-Zavadsky, M., Marcantonio, P. Di, Dionies, F., Doyon, R., Dunn, J., Ehrenreich, D., Faria, J. P., Feruglio, C., Fisher, M., Fontana, A., Fumagalli, M., Fusco, T., Fynbo, J., Gabella, O., Gaessler, W., Gallo, E., Gao, X., Genolet, L., Genoni, M., Giacobbe, P., Giro, E., Gonçalves, R. S., Gonzalez, O., Hernández, J. I. González, Témich, F. Gracia, Haehnelt, M. G., Haniff, C., Hatzes, A., Helled, R., Hoeijmakers, H.J., Huke, P., Järvinen, S., Järvinen, A., Kaminski, A., Korn, A., Kouach, D., Kowzan, G., Kreidberg, L., Landoni, M., Lanotte, A., Lavail, A., Li, J., Liske, J., Lovis, C., Lucatello, S., Lunney, D., MacIntosh, M., Madhusudhan, N., Magrini, L., Maiolino, R., Malo, L., Man, A., Marquart, T., Marques, E. L., Martins, A. M., Martins, C. J. A. P., Maslowski, P., Mason, C., Mason, E., McCracken, R. A., Mergo, P., Micela, G., Mitchell, T., Mollière, P., Monteiro, M., Montgomery, D., Mordasini, C., Morin, J., Mucciarelli, A., Murphy, M. T., N'Diaye, M., Neichel, B., Niedzielski, A. T., Niemczura, E., Nortmann, L., Noterdaeme, P., Nunes, N., Oggioni, L., Oliva, E., Önel, H., Origlia, L., Östlin, G., Palle, E., Papaderos, P., Pariani, G., Castro, J. Peñate, Pepe, F., Levasseur, L. Perreault, Petit, P., Pino, L., Piqueras, J., Pollo, A., Poppenhaeger, K., Quirrenbach, A., Rauscher, E., Rebolo, R., Redaelli, E. M. A., Reffert, S., Reid, D. T., Reiners, A., Richter, P., Riva, M., Rivoire, S., Rodríguez-López, C., Roederer, I. U., Romano, D., Rousseau, S., Rowe, J., Salvadori, S., Santos, N., Diaz, P. Santos, Sanz-Forcada, J., Sarajlic, M., Sauvage, J.-F., Schäfer, S., Schiavon, R. P., Schmidt, T. M., Selmi, C., Sivanandam, S., Sordet, M., Sordo, R., Sortino, F., Sosnowska, D., Sousa, S. G., Stempels, E., Strassmeier, K. G., Mascareño, A. Suárez, Sulich, A., Sun, X., Tanvir, N.R., Tenegi-Sanginés, F., Thibault, S., Thompson, S. J., Tozzi, A., Turbet, M., Vallée, P., Varas, R., Venn, K., Véran, J.-P., Verma, A., Viel, M., Wade, G., Waring, C., Weber, M., Weder, J., Wehbe, B., Weingrill, J., Woche, M., Xompero, M., Zackrisson, E., Zanutta, A., Osorio, M. R. Zapatero, Zechmeister, M., Zimara, J., Evans, Christopher J., Bryant, Julia J., Motohara, Kentaro, Marconi, A., Abreu, M., Adibekyan, V., Alberti, V., Albrecht, S., Alcaniz, J., Aliverti, M., Prieto, C. Allende, Gómez, J. D. Alvarado, Amado, P. J., Amate, M., Andersen, M. I., Artigau, E., Baker, C., Baldini, V., Balestra, A., Barnes, S. A., Baron, F., Barros, S. C. C., Bauer, S. M., Beaulieu, M., Bellido-Tirado, O., Benneke, B., Bensby, T., Bergin, E. A., Biazzo, K., Bik, A., Birkby, J. L., Blind, N., Boisse, I., Bolmont, E., Bonaglia, M., Bonfils, X., Borsa, F., Brandeker, A., Brandner, W., Broeg, C. H., Brogi, M., Brousseau, D., Brucalassi, A., Brynnel, J., Buchhave, L. A., Buscher, D. F., Cabral, A., Calderone, G., Calvo-Ortega, R., Martins, B. L. Canto, Cantalloube, F., Carbonaro, L., Chauvin, G., Chazelas, B., Cheffot, A.-L., Cheng, Y. S., Chiavassa, A., Christensen, L., Cirami, R., Cook, N. J., Cooke, R. J., Coretti, I., Covino, S., Cowan, N., Cresci, G., Cristiani, S., Parro, V. Cunha, Cupani, G., D'Odorico, V., Leão, I. de Castro, Cia, A. De, Medeiros, J. R. De, Debras, F., Debus, M., Demangeon, O., Dessauges-Zavadsky, M., Marcantonio, P. Di, Dionies, F., Doyon, R., Dunn, J., Ehrenreich, D., Faria, J. P., Feruglio, C., Fisher, M., Fontana, A., Fumagalli, M., Fusco, T., Fynbo, J., Gabella, O., Gaessler, W., Gallo, E., Gao, X., Genolet, L., Genoni, M., Giacobbe, P., Giro, E., Gonçalves, R. S., Gonzalez, O., Hernández, J. I. González, Témich, F. Gracia, Haehnelt, M. G., Haniff, C., Hatzes, A., Helled, R., Hoeijmakers, H.J., Huke, P., Järvinen, S., Järvinen, A., Kaminski, A., Korn, A., Kouach, D., Kowzan, G., Kreidberg, L., Landoni, M., Lanotte, A., Lavail, A., Li, J., Liske, J., Lovis, C., Lucatello, S., Lunney, D., MacIntosh, M., Madhusudhan, N., Magrini, L., Maiolino, R., Malo, L., Man, A., Marquart, T., Marques, E. L., Martins, A. M., Martins, C. J. A. P., Maslowski, P., Mason, C., Mason, E., McCracken, R. A., Mergo, P., Micela, G., Mitchell, T., Mollière, P., Monteiro, M., Montgomery, D., Mordasini, C., Morin, J., Mucciarelli, A., Murphy, M. T., N'Diaye, M., Neichel, B., Niedzielski, A. T., Niemczura, E., Nortmann, L., Noterdaeme, P., Nunes, N., Oggioni, L., Oliva, E., Önel, H., Origlia, L., Östlin, G., Palle, E., Papaderos, P., Pariani, G., Castro, J. Peñate, Pepe, F., Levasseur, L. Perreault, Petit, P., Pino, L., Piqueras, J., Pollo, A., Poppenhaeger, K., Quirrenbach, A., Rauscher, E., Rebolo, R., Redaelli, E. M. A., Reffert, S., Reid, D. T., Reiners, A., Richter, P., Riva, M., Rivoire, S., Rodríguez-López, C., Roederer, I. U., Romano, D., Rousseau, S., Rowe, J., Salvadori, S., Santos, N., Diaz, P. Santos, Sanz-Forcada, J., Sarajlic, M., Sauvage, J.-F., Schäfer, S., Schiavon, R. P., Schmidt, T. M., Selmi, C., Sivanandam, S., Sordet, M., Sordo, R., Sortino, F., Sosnowska, D., Sousa, S. G., Stempels, E., Strassmeier, K. G., Mascareño, A. Suárez, Sulich, A., Sun, X., Tanvir, N.R., Tenegi-Sanginés, F., Thibault, S., Thompson, S. J., Tozzi, A., Turbet, M., Vallée, P., Varas, R., Venn, K., Véran, J.-P., Verma, A., Viel, M., Wade, G., Waring, C., Weber, M., Weder, J., Wehbe, B., Weingrill, J., Woche, M., Xompero, M., Zackrisson, E., Zanutta, A., Osorio, M. R. Zapatero, Zechmeister, M., and Zimara, J.

Abstract

The first generation of ELT instruments includes an optical-infrared high resolution spectrograph, indicated as ELT-HIRES and recently christened ANDES (ArmazoNes high Dispersion Echelle Spectrograph). ANDES consists of three fibre-fed spectrographs (UBV, RIZ, YJH) providing a spectral resolution of ∼100,000 with a minimum simultaneous wavelength coverage of 0.4-1.8 µm with the goal of extending it to 0.35-2.4 µm with the addition of a K band spectrograph. It operates both in seeing- and diffraction-limited conditions and the fibre-feeding allows several, interchangeable observing modes including a single conjugated adaptive optics module and a small diffraction-limited integral field unit in the NIR. Its modularity will ensure that ANDES can be placed entirely on the ELT Nasmyth platform, if enough mass and volume is available, or partly in the Coudé room. ANDES has a wide range of groundbreaking science cases spanning nearly all areas of research in astrophysics and even fundamental physics. Among the top science cases there are the detection of biosignatures from exoplanet atmospheres, finding the fingerprints of the first generation of stars, tests on the stability of Nature’s fundamental couplings, and the direct detection of the cosmic acceleration. The ANDES project is carried forward by a large international consortium, composed of 35 Institutes from 13 countries, forming a team of more than 200 scientists and engineers which represent the majority of the scientific and technical expertise in the field among ESO member states.

Published
2022

25. ANDES, the high resolution spectrograph for the ELT:science case, baseline design and path to construction

Author

Marconi, Alessandro, Abreu, M., Adibekyan, V., Alberti, V., Albrecht, S., Alcaniz, J., Aliverti, M., Allende Prieto, C., Alvarado Gómez, J., Amado, P., Amate, M., Andersen, M., Artigau, E., Baker, C., Baldini, V., Balestra, A., Barnes, S., Baron, F., Barros, S., Bauer, S., Beaulieu, M., Bellido-Tirado, O., Benneke, B., Bensby, T., Bergin, E., Biazzo, K., Bik, A., Birkby, J., Blind, N., Boisse, I., Bolmont, E., Bonaglia, M., Bonfils, X., Borsa, F., Brandeker, A., Brandner, W., Broeg, C., Brogi, M., Brousseau, D., Brucalassi, A., Brynnel, J., Buchhave, L., Buscher, D., Cabral, A., Calderone, G., Calvo-Ortega, R., Canto Martins, B., Cantalloube, F., Carbonaro, L., Chauvin, G., Chazelas, B., Cheffot, A.-L., Cheng, Y., Chiavassa, A., Christensen, L., Cirami, R., Cook, N., Cooke, R., Coretti, I., Covino, S., Cowan, N., Cresci, G., Cristiani, S., Cunha Parro, V., Cupani, G., d'Odorico, V., de Castro Leão, I., de Cia, A., de Medeiros, J., Debras, F., Debus, M., Demangeon, O., Dessauges-Zavadsky, M., Di Marcantonio, P., Dionies, F., Doyon, R., Dunn, J., Ehrenreich, D., Faria, J., Feruglio, C., Fisher, M., Fontana, A., Fumagalli, M., Fusco, Thierry, Fynbo, J., Gabella, O., Gaessler, W., Gallo, E., Gao, X., Genolet, L., Genoni, M., Giacobbe, P., Giro, E., Gonçalves, R., Gonzalez, O., González Hernández, J., Gracia Témich, F., Haehnelt, M., Haniff, C., Hatzes, A., Helled, R., Hoeijmakers, H.J., Huke, P., Järvinen, S., Järvinen, A., Kaminski, A., Korn, A., Kouach, D., Kowzan, Grzegorz, Kreidberg, L., Landoni, M., Lanotte, A., Lavail, A., Li, J., Liske, J., Lovis, C., Lucatello, S., Lunney, D., Macintosh, M., Madhusudhan, N., Magrini, L., Maiolino, R., Malo, L., Man, A., Marquart, T., Marques, E., Martins, A., Martins, C., Maslowski, P., Mason, C., Mason, E., Mccracken, R., Mergo, P., Micela, G., Mitchell, T., Mollière, P., Monteiro, M., Montgomery, D., Mordasini, C., Morin, J., Mucciarelli, A., Murphy, M., N'Diaye, M., Neichel, B., Niedzielski, A., Niemczura, E., Nortmann, L., Noterdaeme, P., Nunes, N., Oggioni, L., Oliva, E., Önel, H., Origlia, L., Östlin, G., Palle, E., Papaderos, P., Pariani, G., Peñate Castro, J., Pepe, F., Perreault Levasseur, L., Petit, P., Pino, L., Piqueras, J., Pollo, A., Poppenhaeger, K., Quirrenbach, A., Rauscher, E., Rebolo, R., Redaelli, E., Reffert, S., Reid, D., Reiners, A., Richter, P., Riva, M., Rivoire, S., Rodríguez-López, C., Roederer, I., Romano, D., Rousseau, Sylvain, Rowe, J., Salvadori, S., Santos, N., Santos Diaz, P., Sanz-Forcada, J., Sarajlic, Mirsad, Sauvage, Jean-François, Schäfer, S., Schiavon, R., Schmidt, T., Selmi, C., Sivanandam, S., Sordet, M., Sordo, R., Sortino, F., Sosnowska, D., Sousa, S., Stempels, E., Strassmeier, K., Suárez Mascareño, A., Sulich, A., Sun, X., Tanvir, N.R., Tenegi-Sanginés, F., Thibault, S., Thompson, S., Tozzi, A., Turbet, M., Vallée, P., Varas, R., Venn, K., Véran, J.-P., Verma, A., Viel, M., Wade, G., Waring, C., Weber, M., Weder, J., Wehbe, B., Weingrill, J., Woche, M., Xompero, M., Zackrisson, E., Zanutta, A., Zapatero Osorio, M., Zechmeister, M., Zimara, J., Evans, Christopher J., Bryant, Julia J., Motohara, Kentaro, Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), Centre National d'Études Spatiales [Toulouse] (CNES)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France -Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France, DOTA, ONERA, Université Paris Saclay [Palaiseau], ONERA-Université Paris-Saclay, Laboratoire Univers et Particules de Montpellier (LUPM), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), DOTA, ONERA [Salon], ONERA, Laboratoire de Météorologie Dynamique (UMR 8539) (LMD), Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Agenzia Spaziale Italiana, Fundação para a Ciência e a Tecnologia (Portugal), European Commission, Swedish Research Council, Australian Research Council, European Research Council, and National Science Foundation (US)

Subjects
[SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Diffraction limited IFU, fundamental physics, Extremely large telescope, fundamental physic, physics and evolution of galaxies, [PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], extremely large telescopes, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], physics and evolution of stars, Fibre-fed spcetrograh, Sandage effect, exoplanets, High resolution spectroscopy, infrared spectrographs, stars and planets formation, Variation of physics fundamental constants, ground-based instruments, cosmology, Fundamental physics, Exoplanet atmospheres, Echelle spectrograph, high resolution spectrographs
Abstract

Ground-based and airborne instrumentation for astronomy IX (2022), Montreal, JUL 17-22, 2022.--Proceedings of SPIE - The International Society for Optical Engineering vol. 12184 Article number 1218424.-- Complete list of authors: Marconi, A.; Abreu, M.; Adibekyan, V.; Alberti, V.; Albrecht, S.; Alcaniz, J.; Aliverti, M.; Allende Prieto, C.; Gomez, J. D. Alvarado; Amado, P. J.; Amate, M.; Andersen, M. I.; Artigau, E.; Baker, C.; Baldini, V.; Balestra, A.; Barnes, S. A.; Baron, F.; Barros, S. C. C.; Bauer, S. M.; Beaulieu, M.; Bellido-Tirado, O.; Benneke, B.; Bensby, T.; Bergin, E. A.; Biazzo, K.; Bik, A.; Birkby, J. L.; Blind, N.; Boisse, I.; Bolmont, E.; Bonaglia, M.; Bonfils, X.; Borsa, F.; Brandeker, A.; Brandner, W.; Broeg, C. H.; Brogi, M.; Brousseau, D.; Brucalassi, A.; Brynnel, J.; Buchhave, L. A.; Buscher, D. F.; Cabral, A.; Calderone, G.; Calvo-Ortega, R.; Cantalloube, F.; Canto Martins, B. L.; Carbonaro, L.; Chauvin, G.; Chazelas, B.; Cheffot, A. -L.; Cheng, Y. S.; Chiavassa, A.; Christensen, L.; Cirami, R.; Cook, N. J.; Cooke, R. J.; Coretti, I.; Covino, S.; Cowan, N.; Cresci, G.; Cristiani, S.; Cunha Parro, V.; Cupani, G.; D'Odorico, V.; de Castro Leao, I.; De Cia, A.; De Medeiros, J. R.; Debras, F.; Debus, M.; Demangeon, O.; Dessauges-Zavadsky, M.; Di Marcantonio, P.; Dionies, F.; Doyon, R.; Dunn, J.; Ehrenreich, D.; Faria, J. P.; Feruglio, C.; Fisher, M.; Fontana, A.; Fumagalli, M.; Fusco, T.; Fynbo, J.; Gabella, O.; Gaessler, W.; Gallo, E.; Gao, X.; Genolet, L.; Genoni, M.; Giacobbe, P.; Giro, E.; Goncalves, R. S.; Gonzalez, O. A.; Gonzalez Hernandez, J. I.; Gracia Temich, F.; Haehnelt, M. G.; Haniff, C.; Hatzes, A.; Helled, R.; Hoeijmakers, H. J.; Huke, P.; Jaervinen, A. S.; Jaervinen, S. P.; Kaminski, A.; Korn, A. J.; Kouach, D.; Kowzan, G.; Kreidberg, L.; Landoni, M.; Lanotte, A.; Lavail, A.; Li, J.; Liske, J.; Lovis, C.; Lucatello, S.; Lunney, D.; MacIntosh, M. J.; Madhusudhan, N.; Magrini, L.; Maiolino, R.; Malo, L.; Man, A. W. S.; Marquart, T.; Marques, E. L.; Martins, C. J. A. P.; Martins, A. M.; Maslowski, P.; Mason, E.; Mason, C. A.; McCracken, R. A.; Mergo, P.; Micela, G.; Mitchell, T.; Molliere, P.; Monteiro, M. A.; Montgomery, D.; Mordasini, C.; Morin, J.; Mucciarelli, A.; Murphy, M. T.; N'Diaye, M.; Neichel, B.; Niedzielski, A. T.; Niemczura, E.; Nortmann, L.; Noterdaeme, P.; Nunes, N. J.; Oggioni, L.; Oliva, E.; Onel, H.; Origlia, L.; Ostlin, G.; Palle, E.; Papaderos, P.; Pariani, G.; Penate Castro, J.; Pepe, F.; Levasseur, L. Perreault; Petit, P.; Pino, L.; Piqueras, J.; Pollo, A.; Poppenhaeger, K.; Quirrenbach, A.; Rauscher, E.; Rebolo, R.; Redaelli, E. M. A.; Reffert, S.; Reid, D. T.; Reiners, A.; Richter, P.; Riva, M.; Rivoire, S.; Rodriguez-Lopez, C.; Roederer, I. U.; Romano, D.; Rousseau, S.; Rowe, J.; Salvadori, S.; Sanna, N.; Santos, N. C.; Diaz, P. Santos; Sanz-Forcada, J.; Sarajlic, M.; Sauvage, J. -F.; Schaefer, S.; Schiavon, R. P.; Schmidt, T. M.; Selmi, C.; Sivanandam, S.; Sordet, M.; Sordo, R.; Sortino, F.; Sosnowska, D.; Sousa, S. G.; Stempels, E.; Strassmeier, K. G.; Suarez Mascareno, A.; Sulich, A.; Sun, X.; Tanvir, N. R.; Tenegi-Sangines, F.; Thibault, S.; Thompson, S. J.; Tozzi, A.; Turbet, M.; Vallee, P.; Varas, R.; Venn, K. A.; Veran, J. -P.; Verma, A.; Viel, M.; Wade, G.; Waring, C.; Weber, M.; Weder, J.; Wehbe, B.; Weingrill, J.; Woche, M.; Xompero, M.; Zackrisson, E.; Zanutta, A.; Zapatero Osorio, M. R.; Zechmeister, M.; Zimara, J., The first generation of ELT instruments includes an optical-infrared high resolution spectrograph, indicated as ELT-HIRES and recently christened ANDES (ArmazoNes high Dispersion Echelle Spectrograph). ANDES consists of three fibre-fed spectrographs (UBV, RIZ, YJH) providing a spectral resolution of similar to 100,000 with a minimum simultaneous wavelength coverage of 0.4-1.8 mu m with the goal of extending it to 0.35-2.4 mu m with the addition of a K band spectrograph. It operates both in seeing- and diffraction-limited conditions and the fibre-feeding allows several, interchangeable observing modes including a single conjugated adaptive optics module and a small diffraction-limited integral field unit in the NIR. Its modularity will ensure that ANDES can be placed entirely on the ELT Nasmyth platform, if enough mass and volume is available, or partly in the Coude room. ANDES has a wide range of groundbreaking science cases spanning nearly all areas of research in astrophysics and even fundamental physics. Among the top science cases there are the detection of biosignatures from exoplanet atmospheres, finding the fingerprints of the first generation of stars, tests on the stability of Nature's fundamental couplings, and the direct detection of the cosmic acceleration. The ANDES project is carried forward by a large international consortium, composed of 35 Institutes from 13 countries, forming a team of more than 200 scientists and engineers which represent the majority of the scientific and technical expertise in the field among ESO member states., The Italian effort for ANDES is supported by the Italian National Institute for Astrophysics (INAF). The Portuguese participation is supported by FCT -Fundacao para a Ciencia e a Tecnologia through national funds and by FEDER through COMPETE2020 -Programa Operacional Competitividade e Internacionalizacao by these grants: UID/FIS/04434/2019, UIDB/04434/2020 & UIDP/04434/2020; POCI-01-0145-FEDER-032113 & PTDC/FIS-AST/32113/2017. Swedish participation in the ANDES project is made possible through the national Swedish ELT Instrumentation Consortium (SELTIC), suppored by the Swedish Research Council (VR). CJM acknowledges FCT and POCH/FSE (EC) support through Investigador FCT Contract 2021.01214.CEECIND/CP1658/CT0001. JLB acknowledges funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program under grant agreement No 805445. MTM acknowledges the support of the Australian Research Council through Future Fellowship grant FT180100194 SS acknowledges funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program under grant agreement No 804240. TMS acknowledgment the support from the SNF synergia grant CRSII5-193689 (BLUVES), With funding from the Spanish government through the Severo Ochoa Centre of Excellence accreditation SEV-2017-0709

Published
2022

26. HIRES, the High-resolution Spectrograph for the ELT

Author

Marconi, A., Abreu, M., Adibekyan, V., Aliverti, M., Allende Prieto, C., Amado, P., Amate, M., Artigau, E., Augusto, S., Barros, S., Becerril, S., Benneke, B., Bergin, E., Berio, P., Bezawada, N., Boisse, I., Bonfils, X., Bouchy, F., Broeg, C., Cabral, A., Calvo-Ortega, R., Canto Martins, B. L., Chazelas, B., Chiavassa, A., Christensen, L., Cirami, R., Coretti, I., Covino, S., Cresci, G., Cristiani, S., Cunha Parro, V., Cupani, G., de Castro Leão, I., Renan De Medeiros, J., Furlande Souza, M. A., Di Marcantonio, P., Di Varano, I., D'Odorico, V., Doyon, R., Drass, H., Figueira, P., Belen Fragoso, A., Uldall Fynbo, J. P., Gallo, E., Genoni, M., González Hernández, J., Haehnelt, M., Hlavacek-Larrondo, J., Hughes, I., Huke, P., Humphrey, A., Kjeldsen, H., Korn, A., Kouach, D., Landoni, M., Liske, J., Lovis, C., Lunney, D., Maiolino, R., Malo, L., Marquart, T., Martins, C., Mason, E., Molaro, P., Monnier, J., Monteiro, M., Mordasini, C., Morris, T., Mucciarelli, A., Murray, G., Niedzielski, A., Nunes, N., Oliva, E., Origlia, L., Pallé, E., Pariani, G., Parr-Burman, P., Peñate, J., Pepe, F., Pinna, E., Piskunov, N., Rasilla Piñeiro, J. L., Rebolo, R., Rees, P., Reiners, A., Riva, M., Romano, D., Rousseau, S., Sanna, N., Santos, N., Sarajlic, M., Shen, T.-C., Sortino, F., Sosnowska, D., Sousa, S., Stempels, E., Strassmeier, K., Tenegi, F., Tozzi, A., Udry, S., Valenziano, L., Vanzi, L., Weber, M., Woche, M., Xompero, M., Zackrisson, E., Zapatero Osorio, M. R., Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]
Abstract

International audience; HIRES will be the high-resolution spectrograph at optical and near-infrared (NIR) wavelengths for ESO's Extremely Large Telescope (ELT). It will consist of three fibre-fed spectrographs providing a wavelength coverage of 0.4–1.8 µm (with a goal of 0.35–1.8 µm) at a spectral resolution of ~ 100 000. Fibre-feeding allows HIRES to have several interchangeable observing modes, including a single-conjugate adaptive optics (SCAO) module and a small diffraction-limited integral field unit in the NIR. It will therefore be able to operate in both seeing- and diffraction-limited modes. HIRES will address a wide range of science cases spanning nearly all areas of research in astrophysics and even fundamental physics. Some of the top science cases will be the detection of biosignatures from exoplanet atmospheres, finding the fingerprints of the first generation of stars (Pop III), tests on the stability of Nature's fundamental couplings, and the direct detection of the cosmic acceleration. The HIRES consortium is composed of more than 30 institutes from 14 countries, forming a team of more than 200 scientists and engineers.

Published
2021

27. HIRES, the high-resolution spectrograph for the ELT

Author

Marconi, Alessandro, Abreu, M., Adibekyan, V., Aliverti, Matteo, Allende Prieto, C., Amado, P., Amate, M., Artigau, E., Augusto, S., Barros, S., Becerril, S., Benneke, B., Bergin, E., Berio, P., Bezawada, N., Boisse, I., Bonfils, X., Bouchy, F., Broeg, C., Cabral, A., Calvo-Ortega, R., Canto Martins, B. L., Chazelas, B., Chiavassa, A., Christensen, L., CIRAMI, ROBERTO, CORETTI, Igor, COVINO, Stefano, CRESCI, GIOVANNI, CRISTIANI, Stefano, Cunha Parro, V., CUPANI, Guido, de Castro Leão, I., Renan de Medeiros, J., Furlande Souza, M. A., DI MARCANTONIO, Paolo, Di Varano, I., D'ODORICO, Valentina, Doyon, R., Drass, H., Figueira, P., Belen Fragoso, A., Uldall Fynbo, J. P., Gallo, E., Genoni, Matteo, González Hernández, J., Haehnelt, M., Hlavacek-Larrondo, J., Hughes, I., Huke, P., Humphrey, A., Kjeldsen, H., Korn, A., Kouach, D., LANDONI, Marco, Liske, J., Lovis, C., Lunney, D., Maiolino, R., Malo, L., Marquart, T., Martins, C., MASON, Elena, MOLARO, Paolo, Monnier, J., Monteiro, M., Mordasini, C., Morris, T., Mucciarelli, A., Murray, G., Niedzielski, A., Nunes, N., OLIVA, Ernesto, ORIGLIA, Livia, Pallé, E., PARIANI, Giorgio, Parr-Burman, P., Peñate, J., Pepe, F., PINNA, Enrico, Piskunov, N., Rasilla Piñeiro, J. L., Rebolo, R., Rees, P., Reiners, A., RIVA, Marco, ROMANO, Donatella, Rousseau, S., SANNA, Nicoletta, Santos, N., Sarajlic, M., Shen, T. -C., SORTINO, FRANCESCA, Sosnowska, D., Sousa, S., Stempels, E., Strassmeier, K., Tenegi, F., TOZZI, Andrea, Udry, S., VALENZIANO, LUCA, Vanzi, L., Weber, M., Woche, M., XOMPERO, MARCO, Zackrisson, E., and Zapatero Osorio, M. R.

Subjects
FOS: Physical sciences, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM)
Abstract

HIRES will be the high-resolution spectrograph at optical and near-infrared (NIR) wavelengths for ESO’s Extremely Large Telescope (ELT). It will consist of three fibre-fed spectrographs providing a wavelength coverage of 0.4–1.8 µm (with a goal of 0.35–1.8 µm) at a spectral resolution of ~ 100 000. Fibre-feeding allows HIRES to have several interchangeable observing modes, including a single-conjugate adaptive optics (SCAO) module and a small diffraction-limited integral field unit in the NIR. It will therefore be able to operate in both seeing- and diffraction-limited modes. HIRES will address a wide range of science cases spanning nearly all areas of research in astrophysics and even fundamental physics. Some of the top science cases will be the detection of biosignatures from exoplanet atmospheres, finding the fingerprints of the first generation of stars (Pop III), tests on the stability of Nature’s fundamental couplings, and the direct detection of the cosmic acceleration. The HIRES consortium is composed of more than 30 institutes from 14 countries, forming a team of more than 200 scientists and engineers., Published in The Messenger vol. 182, pp. 27-32, March 2021.

Published
2020

28. End-to-end simulation framework for astronomical spectrographs: SOXS, CUBES, and ANDES

Author

Egner, Sébastien E., Roberts, Scott, Scaudo, A., Genoni, M., Li Causi, G., Cabona, L., Landoni, M., Campana, S., Schipani, P., Claudi, R., Aliverti, M., Baruffolo, A., Ben-Ami, S., Biondi, F., Capasso, G., Cosentino, R., D'Alessio, F., D'Avanzo, P., Hershko, O., Kuncarayakti, H., Munari, M., Radhakrishnan Santhakumari, K., Pignata, G., Rubin, A., Scuderi, S., Vitali, F., Young, D., Achrén, J., Araiza-Duran, J. A., Arcavi, I., Battaini, F., Brucalassi, A., Bruch, R., Cappellaro, E., Colapietro, M., Della Valle, M., De Pascale, M., Di Benedetto, R., D'Orsi, S., Gal-Yam, A., Hernandez, M., Kotilainen, J., Marty, L., Mattila, S., Rappaport, M., Ricci, D., Riva, M., Salasnich, B., Smartt, S., Zanmar Sanchez, R., Stritzinger, M., Ventura, H., Cupani, G., Porru, M., Franchini, M., Cirami, R., Calderone, G., Covino, S., Smiljanic, R., Monteiro, M., Balestra, A., Sordo, R., Mason, E., Rousseau, S., de Castro Leão, I., Zanutta, A., de Meideros Martins, A., Sosnowska, D., Marquart, T., Boisse, I., Sousa, S., Hernandez, J., Piskunov, N., Puschnig, J., Sanna, N., Martins, B., Di Marcantonio, P., and Marconi, A.

Published
2024
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29. ELT-HIRES, the high resolution spectrograph for the ELT: the Phase A study and the path to construction

Author

Marconi, Alessandro, primary, Abreu, M., additional, Adibekyan, V., additional, Aliverti, M., additional, Allende Prieto, C., additional, Amado, P., additional, Amate, M., additional, Artigau, E., additional, Augusto, S., additional, Barros, S., additional, Becerril, S., additional, Benneke, B., additional, Bergin, E., additional, Berio, P., additional, Bezawada, N., additional, Boisse, I., additional, Bonfils, X., additional, Bouchy, F., additional, Broeg, C., additional, Cabral, A., additional, Calvo-Ortega, R., additional, Canto Martins, B. L., additional, Chazelas, B., additional, Chiavassa, A., additional, Christensen, L., additional, Cirami, R., additional, Coretti, I., additional, Covino, S., additional, Cresci, G., additional, Cristiani, S., additional, Cunha Parro, V., additional, Cupani, G., additional, D'Odorico, V., additional, de Castro Leão, I., additional, de Medeiros, J. R., additional, de Souza, M., additional, Di Marcantonio, P., additional, Di Varano, I., additional, Doyon, R., additional, Drass, H., additional, Figueira, P., additional, Fragoso, A., additional, Fynbo, J., additional, Gallo, E., additional, Genoni, M., additional, González Hernández, J., additional, Gratton, R., additional, Haehnelt, M., additional, Hansen, C., additional, Hlavacek-Larrondo, J., additional, Hughes, I., additional, Huke, P., additional, Humphrey, A., additional, Kjeldsen, H., additional, Korn, A., additional, Kouach, D., additional, Landoni, M., additional, Liske, J., additional, Lovis, C., additional, Lunney, D., additional, Maiolino, R., additional, Malo, L., additional, Marquart, T., additional, Martins, C. J. A. P., additional, Maslowski, P., additional, Mason, E., additional, Micela, G., additional, Molaro, P., additional, Monnier, J., additional, Monteiro, M., additional, Mordasini, C., additional, Morris, T., additional, Mucciarelli, A., additional, Murray, G., additional, Niedzielski, A., additional, Niemczura, E., additional, Nisini, B., additional, Nunes, N., additional, Oliva, E., additional, Origlia, L., additional, Pallé, E., additional, Pariani, G., additional, Parr-Burman, P., additional, Pasquini, L., additional, Peñate, J., additional, Pepe, F., additional, Pietrzynski, G., additional, Pinna, E., additional, Piskunov, N., additional, Pollo, A., additional, Rasilla, J., additional, Rebolo, R., additional, Rees, P., additional, Reiners, A., additional, Riva, M., additional, Romano, D., additional, Rousseau, S., additional, Sanna, N., additional, Sarajlic, M., additional, Shen, T.-C., additional, Sortino, F., additional, Sosnowska, D., additional, Sousa, S., additional, Stempels, E., additional, Strassmeier, K., additional, Tenegi, F., additional, Tozzi, A., additional, Udry, S., additional, Valenziano, L., additional, Vanzi, L., additional, Weber, M., additional, Woche, M., additional, Xompero, M., additional, Zackrisson, E., additional, and Zapatero Osorio, M. R., additional

Published
2020
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31. ANDES, the high resolution spectrograph for the ELT: science goals, project overview, and future developments

Author

Bryant, Julia J., Motohara, Kentaro, Vernet, Joël R. D., Marconi, A., Abreu, M., Adibekyan, V., Alberti, V., Albrecht, S., Alcaniz, J., Aliverti, M., Allende Prieto, C., Alvarado-Gomez, J. D., Alves, C. S., Amado, P. J., Amate, M., Andersen, M. I., Antoniucci, S., Artigau, E., Bailet, C., Baker, C., Baldini, V., Balestra, A., Barnes, S. A., Baron, F., Barros, S. C. C., Bauer, S. M., Beaulieu, M., Bellido-Tirado, O., Benneke, B., Bensby, T., Bergin, E. A., Berio, P., Biazzo, K., Bigot, L., Bik, A., Birkby, J. L., Blind, N., Boebion, O., Boisse, I., Bolmont, E., Bolton, J. S., Bonaglia, M., Bonfils, X., Bonhomme, L., Borsa, F., Bouret, J.-C., Brandeker, A., Brandner, W., Broeg, C. H., Brogi, M., Brousseau, D., Brucalassi, A., Brynnel, J., Buchhave, L. A., Buscher, D. F., Cabona, L., Cabral, A., Calderone, G., Calvo-Ortega, R., Cantalloube, F., Canto Martins, B. L., Carbonaro, L., Caujolle, Y., Chauvin, G., Chazelas, B., Cheffot, A.-L., Cheng, Y. S., Chiavassa, A., Christensen, L., Cirami, R., Cirasuolo, M., Cook, N. J., Cooke, R. J., Coretti, I., Covino, S., Cowan, N., Cresci, G., Cristiani, S., Cunha Parro, V., Cupani, G., D'Odorico, V., Dadi, K., de Castro Leão, I., De Cia, A., De Medeiros, J. R., Debras, F., Debus, M., Delorme, A., Demangeon, O., Derie, F., Dessauges-Zavadsky, M., Di Marcantonio, P., Di Stefano, S., Dionies, F., Domiciano de Souza, A., Doyon, R., Dunn, J., Egner, S., Ehrenreich, D., Faria, J. P., Ferruzzi, D., Feruglio, C., Fisher, M., Fontana, A., Frank, B. S., Fuesslein, C., Fumagalli, M., Fusco, T., Fynbo, J., Gabella, O., Gaessler, W., Gallo, E., Gao, X., Genolet, L., Genoni, M., Giacobbe, P., Giro, E., Gonçalves, R. S., Gonzalez, O. A., González-Hernández, J. I., Gouvret, C., Gracia Témich, F., Haehnelt, M. G., Haniff, C., Hatzes, A., Helled, R., Hoeijmakers, H. J., Hughes, I., Huke, P., Ivanisenko, Y., Järvinen, A. S., Järvinen, S. P., Kaminski, A., Kern, J., Knoche, J., Kordt, A., Korhonen, H., Korn, A. J., Kouach, D., Kowzan, G., Kreidberg, L., Landoni, M., Lanotte, A. A., Lavail, A., Lavie, B., Lee, D., Lehmitz, M., Li, J., Li, W., Liske, J., Lovis, C., Lucatello, S., Lunney, D., MacIntosh, M. J., Madhusudhan, N., Magrini, L., Maiolino, R., Maldonado, J., Malo, L., Man, A. W. S., Marquart, T., Marques, C. M. J., Marques, E. L., Martinez, P., Martins, A., Martins, C. J. A. P., Martins, J. H. C., Maslowski, P., Mason, C., Mason, E., McCracken, R. A., Melo e Sousa, M. A. F., Mergo, P., Micela, G., Milaković, D., Mollière, P., Monteiro, M. A., Montgomery, D., Mordasini, C., Morin, J., Mucciarelli, A., Murphy, M. T., N'Diaye, M., Nardetto, N., Neichel, B., Neri, N., Niedzielski, A. T., Niemczura, E., Nisini, B., Nortmann, L., Noterdaeme, P., Nunes, N. J., Oggioni, L., Olchewsky, F., Oliva, E., Önel, H., Origlia, L., Östlin, G., Ouellette, N. N.-Q., Pallé, E., Papaderos, P., Pariani, G., Pasquini, L., Peñate Castro, J., Pepe, F., Peroux, C., Perreault Levasseur, L., Perruchot, S., Petit, P., Pfuhl, O., Pino, L., Piqueras, J., Piskunov, N., Pollo, A., Poppenhaeger, K., Porru, M., Puschnig, J., Quirrenbach, A., Rauscher, E., Rebolo, R., Redaelli, E. M. A., Reffert, S., Reid, D. T., Reiners, A., Richter, P., Riva, M., Rivoire, S., Rodríguez-López, C., Roederer, I. U., Romano, D., Roth, M., Rousseau, S., Rowe, J., Saccardi, A., Salvadori, S., Sanna, N., Santos, N. C., Santos Diaz, P., Sanz-Forcada, J., Sarajlic, M., Sauvage, J.-F., Savio, D., Scaudo, A., Schäfer, S., Schiavon, R. P., Schmidt, T. M., Selmi, C., Simoes, R., Simonnin, A., Sivanandam, S., Sordet, M., Sordo, R., Sortino, F., Sosnowska, D., Sousa, S. G., Spang, A., Spiga, R., Stempels, E., Stevenson, J. R. Y., Strassmeier, K. G., Suárez Mascareño, A., Sulich, A., Sun, X., Tanvir, N. R., Tenegi-Sanginés, F., Thibault, S., Thompson, S. J., Tisserand, P., Tozzi, A., Turbet, M., Véran, J.-P., Vallée, P., Vanni, I., Varas, R., Vega-Moreno, A., Venn, K. A., Verma, A., Vernet, J., Viel, M., Wade, G., Waring, C., Weber, M., Weder, J., Wehbé, B., Weingrill, J., Woche, M., Xompero, M., Zackrisson, E., Zanutta, A., Zapatero Osorio, M. R., Zechmeister, M., and Zimara, J.

Published
2024
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32. ELT-HIRES, the high resolution spectrograph for the ELT: results from the Phase A study

Author

Istituto Nazionale di Astrofisica, Fundação para a Ciência e a Tecnologia (Portugal), Ministerio de Economía y Competitividad (España), European Commission, Marconi, A., Allende Prieto, Carlos, Amado, Pedro J., Amate, M., Augusto, S. R., Becerril, S., Bezawada, N., Boisse, I., Bouchy, F., Cabral, A., Chazelas, B., Cirami, R., Coretti, I., Cristiani, S., Cupani, G., de Castro Leão, I., de Medeiros, J. R., de Souza, M. A. F., Di Marcantonio, P., Di Varano, I., D'Odorico, V., Drass, H., Figueira, P., Fragoso, A. B., Fynbo, J. P. U., Genoni, M., González Hernández, Jonay I., Haehnelt, M., Hughes, I., Huke, P., Kjeldsen, H., Korn, A.J., Landoni, M., Liske, J., Lovis, C., Maiolino, R., Marquart, T., Martins, C.J.A.P., Mason, E., Monteiro, M. A., Morris, T., Murray, G., Niedzielski, A., Oliva, E., Origlia, L., Pallé, Enric, Parr-Burman, Phil, Parro, V. C., Pepe, F., Piskunov, N., Rasilla, J. L., Rees, P., Rebolo, R., Riva, M., Rousseau, S., Sanna, N., Santos, N. C., Shen, T. -C., Sortino, F., Sosnowska, D., Sousa, S., Stempels, E., Strassmeier, K., Tenegi, F., Tozzi, A., Udry, Stephane, Valenziano, L., Vanzi, L., Weber, M., Woche, M., Xompero, M., Zackrisson, E., Istituto Nazionale di Astrofisica, Fundação para a Ciência e a Tecnologia (Portugal), Ministerio de Economía y Competitividad (España), European Commission, Marconi, A., Allende Prieto, Carlos, Amado, Pedro J., Amate, M., Augusto, S. R., Becerril, S., Bezawada, N., Boisse, I., Bouchy, F., Cabral, A., Chazelas, B., Cirami, R., Coretti, I., Cristiani, S., Cupani, G., de Castro Leão, I., de Medeiros, J. R., de Souza, M. A. F., Di Marcantonio, P., Di Varano, I., D'Odorico, V., Drass, H., Figueira, P., Fragoso, A. B., Fynbo, J. P. U., Genoni, M., González Hernández, Jonay I., Haehnelt, M., Hughes, I., Huke, P., Kjeldsen, H., Korn, A.J., Landoni, M., Liske, J., Lovis, C., Maiolino, R., Marquart, T., Martins, C.J.A.P., Mason, E., Monteiro, M. A., Morris, T., Murray, G., Niedzielski, A., Oliva, E., Origlia, L., Pallé, Enric, Parr-Burman, Phil, Parro, V. C., Pepe, F., Piskunov, N., Rasilla, J. L., Rees, P., Rebolo, R., Riva, M., Rousseau, S., Sanna, N., Santos, N. C., Shen, T. -C., Sortino, F., Sosnowska, D., Sousa, S., Stempels, E., Strassmeier, K., Tenegi, F., Tozzi, A., Udry, Stephane, Valenziano, L., Vanzi, L., Weber, M., Woche, M., Xompero, M., and Zackrisson, E.

Abstract

We present the results from the phase A study of ELT-HIRES, an optical-infrared High Resolution Spectrograph for ELT, which has just been completed by a consortium of 30 institutes from 12 countries forming a team of about 200 scientists and engineers. The top science cases of ELT-HIRES will be the detection of life signatures from exoplanet atmospheres, tests on the stability of Nature's fundamental couplings, the direct detection of the cosmic acceleration. However, the science requirements of these science cases enable many other groundbreaking science cases. The baseline design, which allows to fulfil the top science cases, consists in a modular fiber- fed cross-dispersed echelle spectrograph with two ultra-stable spectral arms providing a simultaneous spectral range of 0.4-1.8 ¿m at a spectral resolution of 100,000. The fiber-feeding allows ELT-HIRES to have several, interchangeable observing modes including a SCAO module and a small diffraction-limited IFU.© 2018 SPIE.

Published
2018

34. The virtual atomic and molecular data centre (VAMDC) consortium

Author

Dubernet, M. L., Antony, B. K., Ba, Y. A., Babikov, Yu L., Bartschat, K., Boudon, V., Braams, B. J., Chung, H-K, Daniel, F., Delahaye, F., Del Zanna, G., de Urquijo, J., Dimitrijevic, M. S., Domaracka, A., Doronin, M., Drouin, B. J., Endres, C. P., Fazliev, A. Z., Gagarin, S. V., Gordon, I. E., Gratier, P., Heiter, U., Hill, C., Jevremovic, D., Joblin, C., Kasprzak, A., Krishnakumar, E., Leto, G., Loboda, P. A., Louge, T., Maclot, S., Marinkovic, B. P., Markwick, A., Marquart, T., Mason, H. E., Mason, N. J., Mendoza, C., Mihajlov, A. A., Millar, T. J., Moreau, N., Mulas, G., Pakhomov, Yu, Palmeri, P., Pancheshnyi, S., Perevalov, V. I., Piskunov, N., Postler, J., Quinet, P., Quintas-Sanchez, E., Ralchenko, Yu, Rhee, Y-J, Rixon, G., Rothman, L. S., Roueff, E., Ryabchikova, T., Sahal-Brechot, S., Scheier, P., Schlemmer, S., Schmitt, B., Stempels, E., Tashkun, S., Tennyson, J., Tyuterev, Vl G., Vujcic, V., Wakelam, V., Walton, N. A., Zatsarinny, O., Zeippen, C. J., Zwoelf, C. M., Dubernet, M. L., Antony, B. K., Ba, Y. A., Babikov, Yu L., Bartschat, K., Boudon, V., Braams, B. J., Chung, H-K, Daniel, F., Delahaye, F., Del Zanna, G., de Urquijo, J., Dimitrijevic, M. S., Domaracka, A., Doronin, M., Drouin, B. J., Endres, C. P., Fazliev, A. Z., Gagarin, S. V., Gordon, I. E., Gratier, P., Heiter, U., Hill, C., Jevremovic, D., Joblin, C., Kasprzak, A., Krishnakumar, E., Leto, G., Loboda, P. A., Louge, T., Maclot, S., Marinkovic, B. P., Markwick, A., Marquart, T., Mason, H. E., Mason, N. J., Mendoza, C., Mihajlov, A. A., Millar, T. J., Moreau, N., Mulas, G., Pakhomov, Yu, Palmeri, P., Pancheshnyi, S., Perevalov, V. I., Piskunov, N., Postler, J., Quinet, P., Quintas-Sanchez, E., Ralchenko, Yu, Rhee, Y-J, Rixon, G., Rothman, L. S., Roueff, E., Ryabchikova, T., Sahal-Brechot, S., Scheier, P., Schlemmer, S., Schmitt, B., Stempels, E., Tashkun, S., Tennyson, J., Tyuterev, Vl G., Vujcic, V., Wakelam, V., Walton, N. A., Zatsarinny, O., Zeippen, C. J., and Zwoelf, C. M.

Abstract

The Virtual Atomic and Molecular Data Centre (VAMDC) Consortium is a worldwide consortium which federates atomic and molecular databases through an e-science infrastructure and an organisation to support this activity. About 90% of the inter-connected databases handle data that are used for the interpretation of astronomical spectra and for modelling in many fields of astrophysics. Recently the VAMDC Consortium has connected databases from the radiation damage and the plasma communities, as well as promoting the publication of data from Indian institutes. This paper describes how the VAMDC Consortium is organised for the optimal distribution of atomic and molecular data for scientific research. It is noted that the VAMDC Consortium strongly advocates that authors of research papers using data cite the original experimental and theoretical papers as well as the relevant databases.

Published
2016

35. The virtual atomic and molecular data centre (VAMDC) consortium

Author

Dubernet, M L, primary, Antony, B K, additional, Ba, Y A, additional, Babikov, Yu L, additional, Bartschat, K, additional, Boudon, V, additional, Braams, B J, additional, Chung, H-K, additional, Daniel, F, additional, Delahaye, F, additional, Zanna, G Del, additional, Urquijo, J de, additional, Dimitrijević, M S, additional, Domaracka, A, additional, Doronin, M, additional, Drouin, B J, additional, Endres, C P, additional, Fazliev, A Z, additional, Gagarin, S V, additional, Gordon, I E, additional, Gratier, P, additional, Heiter, U, additional, Hill, C, additional, Jevremović, D, additional, Joblin, C, additional, Kasprzak, A, additional, Krishnakumar, E, additional, Leto, G, additional, Loboda, P A, additional, Louge, T, additional, Maclot, S, additional, Marinković, B P, additional, Markwick, A, additional, Marquart, T, additional, Mason, H E, additional, Mason, N J, additional, Mendoza, C, additional, Mihajlov, A A, additional, Millar, T J, additional, Moreau, N, additional, Mulas, G, additional, Pakhomov, Yu, additional, Palmeri, P, additional, Pancheshnyi, S, additional, Perevalov, V I, additional, Piskunov, N, additional, Postler, J, additional, Quinet, P, additional, Quintas-Sánchez, E, additional, Ralchenko, Yu, additional, Rhee, Y-J, additional, Rixon, G, additional, Rothman, L S, additional, Roueff, E, additional, Ryabchikova, T, additional, Sahal-Bréchot, S, additional, Scheier, P, additional, Schlemmer, S, additional, Schmitt, B, additional, Stempels, E, additional, Tashkun, S, additional, Tennyson, J, additional, Tyuterev, Vl G, additional, Vujčić, V, additional, Wakelam, V, additional, Walton, N A, additional, Zatsarinny, O, additional, Zeippen, C J, additional, and Zwölf, C M, additional

Published
2016
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37. Wavelength calibration from 1-5μm for the CRIRES+ high-resolution spectrograph at the VLT

Author

Seemann, U., additional, Anglada-Escude, G., additional, Baade, D., additional, Bristow, P., additional, Dorn, R. J., additional, Follert, R., additional, Gojak, D., additional, Grunhut, J., additional, Hatzes, A. P., additional, Heiter, U., additional, Ives, D. J., additional, Jeep, P., additional, Jung, Y., additional, Käufl, H.-U., additional, Kerber, F., additional, Klein, B., additional, Lizon, J.-L., additional, Lockhart, M., additional, Löwinger, T., additional, Marquart, T., additional, Oliva, E., additional, Paufique, J., additional, Piskunov, N., additional, Pozna, E., additional, Reiners, A., additional, Smette, A., additional, Smoker, J., additional, Stempels, E., additional, and Valenti, E., additional

Published
2014
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38. Concept and optical design of the cross-disperser module for CRIRES+

Author

Oliva, E., additional, Tozzi, A., additional, Ferruzzi, D., additional, Origlia, L., additional, Hatzes, A., additional, Follert, R., additional, Löwinger, T., additional, Piskunov, N., additional, Heiter, U., additional, Lockhart, M., additional, Marquart, T., additional, Stempels, E., additional, Reiners, A., additional, Anglada-Escude, G., additional, Seemann, Ulf, additional, Dorn, R. J., additional, Bristow, P., additional, Baade, D., additional, Delabre, B., additional, Gojak, D., additional, Grunhut, J., additional, Klein, Barbara, additional, Hilker, M., additional, Ives, D. J., additional, Jung, Y., additional, Kaeufl, H.-U., additional, Kerber, F., additional, Lizon, J. L., additional, Pasquini, L., additional, Paufique, J., additional, Pozna, Eszter, additional, Smette, A., additional, Smoker, J., additional, and Valenti, E., additional

Published
2014
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39. CRIRES+: a cross-dispersed high-resolution infrared spectrograph for the ESO VLT

Author

Follert, R., additional, Dorn, R. J., additional, Oliva, E., additional, Lizon, J. L., additional, Hatzes, A., additional, Piskunov, N., additional, Reiners, A., additional, Seemann, U., additional, Stempels, E., additional, Heiter, U., additional, Marquart, T., additional, Lockhart, M., additional, Anglada-Escude, G., additional, Löwinger, T., additional, Baade, D., additional, Grunhut, J., additional, Bristow, P., additional, Klein, B., additional, Jung, Y., additional, Ives, D. J., additional, Kerber, F., additional, Pozna, E., additional, Paufique, J., additional, Kaeufl, H. U., additional, Origlia, L., additional, Valenti, E., additional, Gojak, D., additional, Hilker, M., additional, Pasquini, L., additional, Smette, A., additional, and Smoker, J., additional

Published
2014
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40. Lyman continuum leaking galaxies : search strategies and local candidates

Author

Bergvall, N., Leitet, E., Zackrisson, Erik, Marquart, T., Bergvall, N., Leitet, E., Zackrisson, Erik, and Marquart, T.

Abstract

Context. Star-forming dwarf galaxies may have played an important role in the reionization of the Universe, provided that some fraction of their ionizing radiation were able to escape into the intergalactic medium. Local galaxies exhibiting such Lyman-continuum (LyC) leakage could potentially shed light on the escape mechanisms involved, but only two low-redshift cases of LyC leakage have been identified so far. Here, we argue that this meager harvest may be caused by unsuitable selection criteria. Candidates for LyC leakage are normally selected by indicators of starburst activity, one of which is a high equivalent width in H alpha. Such a criterion will guarantee a high production of LyC photons but will also bias the selection in favour of a high column density in the neutral gas, effectively ruling out LyC escape. Aims. In this work we want to investigate whether the lack of local LyC emitters can be caused in part by biased selection criteria, and we present a novel method of selecting targets with high escape fractions. By applying these criteria, we assemble a sample of observation targets to study their basic properties. Methods. We introduce a new selection strategy here where the potential LyC leakers are selected by their blue colours and weak emission lines. The selection is based on data from the Sloan Digital Sky Survey (SDSS). We also take a closer look at the properties of 8 LyC leaking candidates at z similar to 0.03 which we have observed with ESO/NTT in broadband B and H alpha. Results. We find that 7 of the 8 target galaxies are involved in interaction with neighbours or show signs of mergers. In 7 cases the young stellar population is clearly displaced relative to the main body of these galaxies, often directly bordering the halo region. In about half of our targets the absorption spectra show young post-starburst signatures. Comparing the scale lengths in H alpha with those of the stellar continua shows that the scale lengths in H alpha typical, AuthorCount:4

Published
2013
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41. ELT-HIRES, the high resolution spectrograph for the ELT: results from the Phase A study

Author

Evans, Christopher J., Simard, Luc, Takami, Hideki, Marconi, A., Allende Prieto, C., Amado, P. J., Amate, M., Augusto, S. R., Becerril, S., Bezawada, N., Boisse, I., Bouchy, F., Cabral, A., Chazelas, B., Cirami, R., Coretti, I., Cristiani, S., Cupani, G., de Castro Leão, I., de Medeiros, J. R., de Souza, M. A. F., Di Marcantonio, P., Di Varano, I., D'Odorico, V., Drass, H., Figueira, P., Fragoso, A. B., Fynbo, J. P. U., Genoni, M., González Hernández, J. I., Haehnelt, M., Hughes, I., Huke, P., Kjeldsen, H., Korn, A. J., Landoni, M., Liske, J., Lovis, C., Maiolino, R., Marquart, T., Martins, C. J. A. P., Mason, E., Monteiro, M. A., Morris, T., Murray, G., Niedzielski, A., Oliva, E., Origlia, L., Pallé, E., Parr-Burman, P., Parro, V. C., Pepe, F., Piskunov, N., Rasilla, J. L., Rees, P., Rebolo, R., Riva, M., Rousseau, S., Sanna, N., Santos, N. C., Shen, T.-C., Sortino, F., Sosnowska, D., Sousa, S., Stempels, E., Strassmeier, K., Tenegi, F., Tozzi, A., Udry, S., Valenziano, L., Vanzi, L., Weber, M., Woche, M., Xompero, M., and Zackrisson, E.

Published
2018
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42. ELT high resolution spectrograph: phase-A software architecture study

Author

Guzman, Juan C., Ibsen, Jorge, Di Marcantonio, P., Cirami, R., Cupani, G., Di Varano, I., Drass, H., Figueira, P., de Souza, M. A. F., Genoni, M., Gonzalez, O. A., Landoni, M., Li Causi, G., Marquart, T., Mason, E., Monteiro, M. A., Parro, V. C., Augusto, S. R., Rousseau, S., Sanna, N., Shen, T., Sosnowska, D., Sousa, S., Xompero, M., Boisse, I., and Marconi, A.

Published
2018
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43. “Virtual Atomic and Molecular Data Centre” and Astrophysics : Level 2 Release

Author

Doronin, M., Dubernet, M. L., Walton, N., Mason, N., Rixon, G., Sidaner, P. L., Schlemmer, S., Piskunov, N., Tennyson, J., Akram, A., Endres, C., Hill, C., Marquart, T., Nenadovic, L., Smith, K., Consortium, Vamdc, Doronin, M., Dubernet, M. L., Walton, N., Mason, N., Rixon, G., Sidaner, P. L., Schlemmer, S., Piskunov, N., Tennyson, J., Akram, A., Endres, C., Hill, C., Marquart, T., Nenadovic, L., Smith, K., and Consortium, Vamdc

Abstract

The Virtual Atomic and Molecular Data Centre (VAMDC, \lta href=’http://www.vamdc.eu/’\gthttp://www.vamdc.eu/\lt/a\gt) is a consortium between groups involved in the generation, evaluation, and use of atomic and molecular data, funded by the European Union. VAMDC aims to build a reliable, open, flexible and interoperable e-science interface to existing atomic and molecular data. The project will cover establishing the core consortium, the development and deployment of the infrastructure and the development of interfaces to the existing atomic and molecular databases. This paper describes the organisation of the project and the achievements at the end of its second year.

Published
2012

44. Structural parameters of starburst and postburst galaxies

Author

Blasco-Herrera, Javier, Östlin, Göran, Fathi, Kambiz, Bergvall, N., Marquart, T., Blasco-Herrera, Javier, Östlin, Göran, Fathi, Kambiz, Bergvall, N., and Marquart, T.

Abstract

We present two samples of 1173 starbursts and 145 postburst in the redshift range0.01 < z < 0.083, selected from Sloan Digital Sky Survey Data Release 7. We charac-terize both samples using 2D Sersic profiles and measure their asymmetry. The Sersicindex, n, and the effective radii show that starburst galaxies are more concentratedthan the postburst sample, with median n 1.85 for starbursts and 2.85 for post-bursts. There is a large fraction of disky (n < 2) postbursts, a fraction larger thanreported by previous studies. Part of the excess comes from low luminosity (Mr > −19)objects, vastly dominated by discs. We estimate the mass from the velocity dispersionof the H emission line, both for the starbursts and those postbursts with residualemission, finding that Lr / Mb, with b = 1.35 for starbursts and b = 1.5 for post-bursts. The typical values of the mass-to-light ratio range between 0 and 10. This,now, is surprising for starburst galaxies, for which mass-to-light ratios 1 have beenpreviously found.

Published
2012

45. Deep multiband surface photometry on star forming galaxies : I. A sample of 24 blue compact galaxies

Author

Micheva, G., Östlin, G., Bergvall, N., Zackrisson, E., Masegosa, J., Marquez, I., Marquart, T., Durret, F., Micheva, G., Östlin, G., Bergvall, N., Zackrisson, E., Masegosa, J., Marquez, I., Marquart, T., and Durret, F.

Abstract

[Abridged] We present deep optical and near-infrared UBVRIHKs imaging data for 24 blue compact galaxies (BCGs). The sample contains luminous dwarf and intermediate-mass BCGs which are predominantly metal-poor, although a few have near-solar metallicities. We have analyzed isophotal and elliptical integration surface brightness and color profiles, extremely deep (mu_B\lt29 mag arcsec\^$$-2$$) contour maps and RGB images for each galaxy in the sample. The colors are compared to different spectral evolutionary models. We detect extremely extended low surface brightness (LSB) components dominant beyond the Holmberg radius as well as optical bridges between companion galaxies at the mu_V~28th mag arcsec\^$$-2$$ isophotal level. The central surface brightness mu_0 and scale length h_r are derived from two radial ranges typically assumed to be dominated by the underlying host galaxy. We find that mu_0 and h_r of the BCGs host deviate from those of dwarf ellipticals (dE) and dwarf irregulars (dI) solely due to a strong burst contribution to the surface brightness profile almost down to the Holmberg radius. Structural parameters obtained from a fainter region, mu_B=26-28 mag arcsec\^$$-2$$, are consistent with those of true LSB galaxies for the starbursting BCGs in our sample, and with dEs and dIs for the BCGs with less vigorous star formation.

Published
2012

46. Stellar dynamics of blue compact galaxies - II. Further indications of a merger in ESO 338-IG04

Author

Cumming, R. J., Fathi, K., Ostlin, G., Marquart, T., Marquez, I., Masegosa, J., Bergvall, N., Amram, P., Cumming, R. J., Fathi, K., Ostlin, G., Marquart, T., Marquez, I., Masegosa, J., Bergvall, N., and Amram, P.

Abstract

Context. Luminous blue compact galaxies, common at z similar to 1 but now relatively rare, show disturbed kinematics in emission lines. Aims. As part of a programme to understand their formation and evolution, we have investigated the stellar dynamics of a number of nearby objects in this class. Methods. We obtained long-slit spectra with VLT/FORS2 in the spectral region covering the near-infrared calcium triplet. In this paper we focus on the well-known luminous blue compact galaxy ESO338-IG04 (Tololo 1924 - 416). A previous investigation, using Fabry-Perot interferometry, showed that this galaxy has a chaotic Ha velocity field, indicating that either the galaxy is not in dynamical equilibrium or that Ha does not trace the gravitational potential due to feedback from star formation. Results. Along the apparent major axis, the stellar and ionised gas velocities for the most part follow each other. The chaotic velocity field must therefore be a sign that the young stellar population in ESO338-IG04 is not in dynamical equilibrium. The most likely explanation, which is also supported by its morphology, is that the galaxy has experienced a merger and that this has triggered the current starburst. Summarising the results of our programme so far, we note that emission-line velocity fields are not always reliable tracers of stellar motions, and go on to assess the implications for kinematic studies of similar galaxies at intermediate redshift.

Published
2008
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49. Supernova 2006aj and the associated X-Ray flash 060218

Author

Sollerman, Jesper Olof, Jaunsen, A.O., Fynbo, J.P.U., Hjorth, J., Jakobsson, P., Féron, C, Laursen, P., Ovaldsen, J. -E., Selj, J., Thöne, Christina, Xu, D., Davis, Tamara Maree, Gorosabel, J., Watson, D., Duro, R., Ilyin, I., Jensen, B.L., Lysfjord, N., Marquart, T., Nielsen, T.B., Näränen, J., Schwarz, H.E., Walch, S., Wold, M., Östlin, G., Sollerman, Jesper Olof, Jaunsen, A.O., Fynbo, J.P.U., Hjorth, J., Jakobsson, P., Féron, C, Laursen, P., Ovaldsen, J. -E., Selj, J., Thöne, Christina, Xu, D., Davis, Tamara Maree, Gorosabel, J., Watson, D., Duro, R., Ilyin, I., Jensen, B.L., Lysfjord, N., Marquart, T., Nielsen, T.B., Näränen, J., Schwarz, H.E., Walch, S., Wold, M., and Östlin, G.

Abstract

Gamma rays: bursts, supernovae: individual: SN 2006aj Udgivelsesdato: August

Published
2006

50. VAMDC—The Virtual Atomic and Molecular Data Centre—A New Way to Disseminate Atomic and Molecular Data—VAMDC Level 1 Release

Author

Rixon, G., primary, Dubernet, M. L., additional, Piskunov, N., additional, Walton, N., additional, Mason, N., additional, Le Sidaner, P., additional, Schlemmer, S., additional, Tennyson, J., additional, Akram, A., additional, Benson, K., additional, Bureau, J., additional, Doronin, M., additional, Endres, C., additional, Heiter, U., additional, Hill, C., additional, Kupka, F., additional, Nenadovic, L., additional, Marquart, T., additional, Mulas, G., additional, Ralchenko, Y., additional, Shih, A., additional, Smith, K., additional, Schmitt, B., additional, Witherick, D., additional, Boudon, V., additional, Culhane, J. L., additional, Dimitrijevic, M. S., additional, Fazliev, A. Z., additional, Joblin, C., additional, Leto, G., additional, Loboda, P. A., additional, Mason, H. E., additional, Mendoza, C., additional, Millar, T. J., additional, Nunez, L. A., additional, Perevalov, V. I., additional, Rothman, L. S., additional, Roueff, E., additional, Ryabchikova, T. A., additional, Ryabtsev, A., additional, Sahal-Bréchot, S., additional, Tyuterev, V. G., additional, Wakelam, V., additional, and Zeippen, C. J., additional

Published
2011
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