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17 results on '"Fredslund SO"'

1. Solar-like oscillations in γ Cephei A as seen through SONG and TESS

Author

Knudstrup, E., primary, Lund, M. N., additional, Fredslund Andersen, M., additional, Rørsted, J. L., additional, Pérez Hernández, F., additional, Grundahl, F., additional, Pallé, P. L., additional, Stello, D., additional, White, T. R., additional, Kjeldsen, H., additional, Vrard, M., additional, Winther, M. L., additional, Handberg, R., additional, and Simón-Díaz, S., additional

Published
2023
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3. Precise radial velocities of giant stars

Author

Heeren, Paul, primary, Reffert, Sabine, additional, Trifonov, Trifon, additional, Wong, Ka Ho, additional, Lee, Man Hoi, additional, Lillo-Box, Jorge, additional, Quirrenbach, Andreas, additional, Arentoft, Torben, additional, Albrecht, Simon, additional, Grundahl, Frank, additional, Andersen, Mads Fredslund, additional, Antoci, Victoria, additional, and Pallé, Pere L., additional

Published
2021
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4. No swan song for Sun-as-a-star helioseismology: Performances of the Solar-SONG prototype for individual mode characterisation

Author

Frank Grundahl, J. Christensen-Dalsgaard, R. A. Garcia, S. N. Breton, H. Kjeldsen, Pere L. Palle, S. Mathur, M. Fredslund Andersen, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Instituto de Astrofisica de Canarias (IAC), Universidad de La Laguna [Tenerife - SP] (ULL), and Aarhus University [Aarhus]

Subjects
Physics, Mode (statistics), FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, methods: data analysis, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, helioseismology [Sun], Helioseismology, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], data analysis [Methods], Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Solar and Stellar Astrophysics (astro-ph.SR), Sun: helioseismology
Abstract

The GOLF instrument on board SoHO has been in operation for almost 25 years but aging of the instrument has now strongly affected its performance, especially in the low-frequency p-mode region. At the end of the SoHO mission, the ground-based network BiSON will remain the only facility able to perform Sun-integrated helioseismic observations. Therefore, we want to assess the helioseismic performances of an \'echelle spectrograph like SONG. Indeed, the high precision of such an instrument and the quality of the data acquired for asteroseismic purpose calls for an evaluation of the instrument ability to perform global radial-velocity measurements of the solar disk. Data acquired during the Solar-SONG 2018 observation campaign at the Teide Observatory are used to study mid- and low-frequency p modes. A Solar-SONG time series of 30-day duration is reduced with a combination of the traditional IDL iSONG pipeline and a new Python pipeline described in this paper. A mode fitting method built around a Bayesian approach is then performed on the Solar-SONG and contemporaneous GOLF, BiSON, and HMI data. For this contemporaneous time series, Solar-SONG is able to characterise p modes at a lower frequency than BiSON and GOLF (1750{\mu}Hz against 1946 and 2157 {\mu}Hz respectively), while for HMI it is possible to characterise a mode at 1686 {\mu}Hz. The decrease of GOLF sensitivity is then evaluated through the evolution of its low-frequency p-mode characterisation abilities over the years. [abridged], Comment: 24 pages, 17 figures. Accepted in A&A

Published
2022

5. Properties of the Hyades, the eclipsing binary HD 27130, and the oscillating red giant ϵ Tauri

Author

Brogaard, K., primary, Pakštienė, E., additional, Grundahl, F., additional, Mikolaitis, Š., additional, Tautvaišienė, G., additional, Slumstrup, D., additional, Talens, G. J. J., additional, VandenBerg, D. A., additional, Miglio, A., additional, Arentoft, T., additional, Kjeldsen, H., additional, Janulis, R., additional, Drazdauskas, A., additional, Marchini, A., additional, Minkevičiūtė, R., additional, Stonkutė, E., additional, Bagdonas, V., additional, Fredslund Andersen, M., additional, Jessen-Hansen, J., additional, Pallé, P. L., additional, Dorval, P., additional, Snellen, I. A. G., additional, Otten, G. P. P. L., additional, and White, T. R., additional

Published
2020
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6. Precise radial velocities of giant stars

Author

Luque, R., primary, Trifonov, T., additional, Reffert, S., additional, Quirrenbach, A., additional, Lee, M. H., additional, Albrecht, S., additional, Fredslund Andersen, M., additional, Antoci, V., additional, Grundahl, F., additional, Schwab, C., additional, and Wolthoff, V., additional

Published
2019
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7. MASCARA-3b

Author

Hjorth, M., primary, Albrecht, S., additional, Talens, G. J. J., additional, Grundahl, F., additional, Justesen, A. B., additional, Otten, G. P. P. L., additional, Antoci, V., additional, Dorval, P., additional, Foxell, E., additional, Fredslund Andersen, M., additional, Murgas, F., additional, Palle, E., additional, Stuik, R., additional, Snellen, I. A. G., additional, and Van Eylen, V., additional

Published
2019
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8. Oscillations in the Sun with SONG: Setting the scale for asteroseismic investigations

Author

Fredslund Andersen, M., primary, Pallé, P., additional, Jessen-Hansen, J., additional, Wang, K., additional, Grundahl, F., additional, Bedding, T. R., additional, Roca Cortes, T., additional, Yu, J., additional, Mathur, S., additional, Gacia, R. A., additional, Arentoft, T., additional, Régulo, C., additional, Tronsgaard, R., additional, Kjeldsen, H., additional, and Christensen-Dalsgaard, J., additional

Published
2019
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9. MASCARA-3b: A hot Jupiter transiting a bright F7 star in an aligned orbit.

Author

Hjorth, M., Albrecht, S., Talens, G. J. J., Grundahl, F., Justesen, A. B., Otten, G. P. P. L., Antoci, V., Dorval, P., Foxell, E., Fredslund Andersen, M., Murgas, F., Palle, E., Stuik, R., Snellen, I. A. G., and Van Eylen, V.

Subjects
HOT Jupiters, STELLAR orbits, COOL stars (Astronomy), MASCARA, EXTRASOLAR planets, JUPITER (Planet)
Abstract

We report the discovery of MASCARA-3b, a hot Jupiter orbiting its bright (V = 8.33) late F-type host every 5.55149 ± 0.00001 days in an almost circular orbit (e = 0.050−0.017+0.020). This is the fourth exoplanet discovered with the Multi-site All-Sky CAmeRA (MASCARA), and the first of these that orbits a late-type star. Follow-up spectroscopic measurements were obtained in and out of transit with the Hertzsprung SONG telescope. Combining the MASCARA photometry and SONG radial velocities reveals a radius and mass of 1.36 ± 0.05 RJup and 4.2 ± 0.2 MJup. In addition, SONG spectroscopic transit observations were obtained on two separate nights. From analyzing the mean out-of-transit broadening function, we obtain v sin i⋆ = 20.4 ± 0.4 km s−1. In addition, investigating the Rossiter-McLaughlin effect, as observed in the distortion of the stellar lines directly and through velocity anomalies, we find the projected obliquity to be λ = 1.2−7.4+8.2 deg, which is consistent with alignment. [ABSTRACT FROM AUTHOR]

Published
2019
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10. MASCARA-1 b

Author

Talens, G. J. J., primary, Albrecht, S., additional, Spronck, J. F. P., additional, Lesage, A.-L., additional, Otten, G. P. P. L., additional, Stuik, R., additional, Van Eylen, V., additional, Van Winckel, H., additional, Pollacco, D., additional, McCormac, J., additional, Grundahl, F., additional, Fredslund Andersen, M., additional, Antoci, V., additional, and Snellen, I. A. G., additional

Published
2018
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11. The mass and age of the first SONG target: the red giant 46 LMi

Author

Frandsen, S., primary, Fredslund Andersen, M., additional, Brogaard, K., additional, Jiang, C., additional, Arentoft, T., additional, Grundahl, F., additional, Kjeldsen, H., additional, Christensen-Dalsgaard, J., additional, Weiss, E., additional, Pallé, P., additional, Antoci, V., additional, Kjærgaard, P., additional, Sørensen, A. N., additional, Skottfelt, J., additional, and Jørgensen, U. G., additional

Published
2018
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12. MASCARA-2 b

Author

Talens, G. J. J., primary, Justesen, A. B., additional, Albrecht, S., additional, McCormac, J., additional, Van Eylen, V., additional, Otten, G. P. P. L., additional, Murgas, F., additional, Palle, E., additional, Pollacco, D., additional, Stuik, R., additional, Spronck, J. F. P., additional, Lesage, A.-L., additional, Grundahl, F., additional, Fredslund Andersen, M., additional, Antoci, V., additional, and Snellen, I. A. G., additional

Published
2018
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14. MASCARA-1 b

Author

G. J. J. Talens, V. Van Eylen, Ignas Snellen, A.-L. Lesage, Don Pollacco, Gilles Otten, Remko Stuik, Frank Grundahl, James McCormac, H. Van Winckel, Julien Spronck, M. Fredslund Andersen, Simon Albrecht, and Victoria Antoci

Subjects
Physics, 010504 meteorology & atmospheric sciences, Space and Planetary Science, 0103 physical sciences, Hot Jupiter, Astronomy and Astrophysics, Astrophysics, Mascara, Planetary system, Orbit (control theory), 010303 astronomy & astrophysics, 01 natural sciences, 0105 earth and related environmental sciences
Published
2018

15. MASCARA-1 b

Author

Talens, G. J. J., primary, Albrecht, S., additional, Spronck, J. F. P., additional, Lesage, A.-L., additional, Otten, G. P. P. L., additional, Stuik, R., additional, Van Eylen, V., additional, Van Winckel, H., additional, Pollacco, D., additional, McCormac, J., additional, Grundahl, F., additional, Fredslund Andersen, M., additional, Antoci, V., additional, and Snellen, I. A. G., additional

Published
2017
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16. Kepler sheds new and unprecedented light on the variability of a blue supergiant: Gravity waves in the O9.5Iab star HD 188209

Author

Aerts, C., primary, Símon-Díaz, S., additional, Bloemen, S., additional, Debosscher, J., additional, Pápics, P. I., additional, Bryson, S., additional, Still, M., additional, Moravveji, E., additional, Williamson, M. H., additional, Grundahl, F., additional, Fredslund Andersen, M., additional, Antoci, V., additional, Pallé, P. L., additional, Christensen-Dalsgaard, J., additional, and Rogers, T. M., additional

Published
2017
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