13 results on '"Waldmann, Ingo P"'
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2. Design and testing of a low-resolution NIR spectrograph for the Exoplanet Climate Infrared Telescope
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Bryant, Julia J., Motohara, Kentaro, Vernet, Joël R. D., Bernard, Lee, Gamaunt, Johnathan, Jensen, Logan, Bocchieri, Andrea, Butler, Nat, Changeat, Quentin, D'Alessandro, Azzurra, Edwards, Billy, Earley, Conor, Gong, Qian, Hartley, John, Helson, Kyle, Kelly, Daniel P., Klangboonkrong, Kanchita, Kleyheeg, Annalies, Lewis, Nikole, Li, Steven, Line, Michael, Maher, Stephen F., McClelland, Ryan, Miko, Laddawan R., Mugnai, Lorenzo V., Nagler, Peter, Netterfield, C. Barth, Parmentier, Vivien, Pascale, Enzo, Patience, Jennifer, Rehm, Tim, Romualdez, Javier, Sarkar, Subhajit, Scowen, Paul, Tucker, Greg, Waczynski, Augustyn, and Waldmann, Ingo
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- 2024
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3. Integration and testing of a cryogenic receiver for the Exoplanet Climate Infrared Telescope (EXCITE)
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Bryant, Julia J., Motohara, Kentaro, Vernet, Joël R. D., Kleyheeg, Annalies, Bernard, Lee, Bocchieri, Andrea, Butler, Nat, Changeat, Quentin, D'Alessandro, Azzurra, Edwards, Billy, Gamaunt, John, Gong, Qian, Hartley, John, Helson, Kyle, Jensen, Logan, Kelly, Daniel P., Klangboonkrong, Kanchita, Leong, Ed, Lewis, Nikole, Li, Steven, Line, Michael, Maher, Stephen F., McClelland, Ryan, Miko, Laddawan R., Mugnai, Lorenzo, Nagler, Peter, Netterfield, Barth, Parmentier, Vivien, Pascale, Enzo, Patience, Jennifer, Rehm, Tim, Romualdez, Javier, Sarkar, Subhajit, Scowen, Paul, Tucker, Gregory S., Waczynski, Augustyn, and Waldmann, Ingo
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- 2024
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4. SO2, silicate clouds, but no CH4detected in a warm Neptune
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Dyrek, Achrène, Min, Michiel, Decin, Leen, Bouwman, Jeroen, Crouzet, Nicolas, Mollière, Paul, Lagage, Pierre-Olivier, Konings, Thomas, Tremblin, Pascal, Güdel, Manuel, Pye, John, Waters, Rens, Henning, Thomas, Vandenbussche, Bart, Ardevol Martinez, Francisco, Argyriou, Ioannis, Ducrot, Elsa, Heinke, Linus, van Looveren, Gwenael, Absil, Olivier, Barrado, David, Baudoz, Pierre, Boccaletti, Anthony, Cossou, Christophe, Coulais, Alain, Edwards, Billy, Gastaud, René, Glasse, Alistair, Glauser, Adrian, Greene, Thomas P., Kendrew, Sarah, Krause, Oliver, Lahuis, Fred, Mueller, Michael, Olofsson, Goran, Patapis, Polychronis, Rouan, Daniel, Royer, Pierre, Scheithauer, Silvia, Waldmann, Ingo, Whiteford, Niall, Colina, Luis, van Dishoeck, Ewine F., Östlin, Göran, Ray, Tom P., and Wright, Gillian
- Abstract
WASP-107b is a warm (approximately 740 K) transiting planet with a Neptune-like mass of roughly 30.5 M⊕and Jupiter-like radius of about 0.94 RJ(refs. 1,2), whose extended atmosphere is eroding3. Previous observations showed evidence for water vapour and a thick, high-altitude condensate layer in the atmosphere of WASP-107b (refs. 4,5). Recently, photochemically produced sulfur dioxide (SO2) was detected in the atmosphere of a hot (about 1,200 K) Saturn-mass planet from transmission spectroscopy near 4.05 μm (refs. 6,7), but for temperatures below about 1,000 K, sulfur is predicted to preferably form sulfur allotropes instead of SO2(refs. 8–10). Here we report the 9σdetection of two fundamental vibration bands of SO2, at 7.35 μm and 8.69 μm, in the transmission spectrum of WASP-107b using the Mid-Infrared Instrument (MIRI) of JWST. This discovery establishes WASP-107b as the second irradiated exoplanet with confirmed photochemistry, extending the temperature range of exoplanets exhibiting detected photochemistry from about 1,200 K down to about 740 K. Furthermore, our spectral analysis reveals the presence of silicate clouds, which are strongly favoured (around 7σ) over simpler cloud set-ups. Furthermore, water is detected (around 12σ) but methane is not. These findings provide evidence of disequilibrium chemistry and indicate a dynamically active atmosphere with a super-solar metallicity.
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- 2024
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5. 15NH3in the atmosphere of a cool brown dwarf
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Barrado, David, Mollière, Paul, Patapis, Polychronis, Min, Michiel, Tremblin, Pascal, Ardevol Martinez, Francisco, Whiteford, Niall, Vasist, Malavika, Argyriou, Ioannis, Samland, Matthias, Lagage, Pierre-Olivier, Decin, Leen, Waters, Rens, Henning, Thomas, Morales-Calderón, María, Guedel, Manuel, Vandenbussche, Bart, Absil, Olivier, Baudoz, Pierre, Boccaletti, Anthony, Bouwman, Jeroen, Cossou, Christophe, Coulais, Alain, Crouzet, Nicolas, Gastaud, René, Glasse, Alistair, Glauser, Adrian M., Kamp, Inga, Kendrew, Sarah, Krause, Oliver, Lahuis, Fred, Mueller, Michael, Olofsson, Göran, Pye, John, Rouan, Daniel, Royer, Pierre, Scheithauer, Silvia, Waldmann, Ingo, Colina, Luis, van Dishoeck, Ewine F., Ray, Tom, Östlin, Göran, and Wright, Gillian
- Abstract
Brown dwarfs serve as ideal laboratories for studying the atmospheres of giant exoplanets on wide orbits, as the governing physical and chemical processes within them are nearly identical1,2. Understanding the formation of gas-giant planets is challenging, often involving the endeavour to link atmospheric abundance ratios, such as the carbon-to-oxygen (C/O) ratio, to formation scenarios3. However, the complexity of planet formation requires further tracers, as the unambiguous interpretation of the measured C/O ratio is fraught with complexity4. Isotope ratios, such as deuterium to hydrogen and 14N/15N, offer a promising avenue to gain further insight into this formation process, mirroring their use within the Solar System5–7. For exoplanets, only a handful of constraints on 12C/13C exist, pointing to the accretion of 13C-rich ice from beyond the CO iceline of the disks8,9. Here we report on the mid-infrared detection of the 14NH3and 15NH3isotopologues in the atmosphere of a cool brown dwarf with an effective temperature of 380 K in a spectrum taken with the Mid-Infrared Instrument (MIRI) of JWST. As expected, our results reveal a 14N/15N value consistent with star-like formation by gravitational collapse, demonstrating that this ratio can be accurately constrained. Because young stars and their planets should be more strongly enriched in the 15N isotope10, we expect that 15NH3will be detectable in several cold, wide-separation exoplanets.
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- 2023
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6. The EXoplanet Climate Infrared TElescope (EXCITE)
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Evans, Christopher J., Bryant, Julia J., Motohara, Kentaro, Nagler, Peter C., Bernard, Lee, Bocchieri, Andrea, Butler, Nat, Changeat, Quentin, D'Alessandro, Azzurra, Edwards, Billy, Gamaunt, John, Gong, Qian, Hartley, John, Helson, Kyle, Jensen, Logan, Kelly, Daniel P., Klangboonkrong, Kanchita, Kleyheeg, Annalies, Lewis, Nikole K., Li, Steven, Line, Michael, Maher, Stephen F., McClelland, Ryan, Miko, Laddawan R., Mugnai, Lorenzo V., Netterfield, C. Barth, Parmentier, Vivien, Pascale, Enzo, Patience, Jennifer, Rehm, Tim, Romualdez, Javier, Sarkar, Subhajit, Scowen, Paul A., Tucker, Gregory S., Waczynski, Augustyn, and Waldmann, Ingo
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- 2022
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7. The design and development status of the cryogenic receiver for the EXoplanet Climate Infrared TELescope (EXCITE)
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Evans, Christopher J., Bryant, Julia J., Motohara, Kentaro, Rehm, Tim, Bernard, Lee, Bocchieri, Andrea, Butler, Nat, Changeat, Quentin, D'Alessandro, Azzurra, Edwards, Billy, Gamaunt, John, Gong, Qian, Hartley, John, Helson, Kyle, Jensen, Logan, Kelly, Daniel P., Klangboonkrong, Kanchita, Kleyheeg, Annalies, Lewis, Nikole, Li, Steven, Line, Michael, Maher, Stephen F., McClelland, Ryan, Miko, Laddawan R., Mugnai, Lorenzo, Nagler, Peter, Netterfield, C. Barth, Parmentier, Vivien, Pascale, Enzo, Patience, Jennifer, Romualdez, Javier, Sarkar, Subhajit, Scowen, Paul A., Tucker, Gregory S., Waczynski, Augustyn, and Waldmann, Ingo
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- 2022
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8. The Exoplanet Climate Infrared TElescope (EXCITE)
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Evans, Christopher J., Simard, Luc, Takami, Hideki, Tucker, Gregory S., Nagler, Peter, Butler, Nathaniel, Kilpatrick, Brian, Korotkov, Andrei, Lewis, Nikole, Maxted, Pierre F. L., Miko, Laddawan, Netterfield, C. B., Pascale, Enzo, Patience, Jennifer, Scowen, Paul, Parmentier, Vivien, Waldmann, Ingo, and Wen, Yiting
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- 2018
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9. The ARIEL space mission
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Lystrup, Makenzie, MacEwen, Howard A., Fazio, Giovanni G., Batalha, Natalie, Siegler, Nicholas, Tong, Edward C., Pascale, Enzo, Bezawada, Naidu, Barstow, Joanna, Beaulieu, Jean-Philippe, Bowles, Neil, Coudé du Foresto, Vincent, Coustenis, Athena, Decin, Leen, Drossart, Pierre, Eccleston, Paul, Encrenaz, Therese, Forget, Francois, Griffin, Matt, Güdel, Manuel, Hartogh, Paul, Heske, Astrid, Lagage, Pierre-Olivier, Leconte, Jeremy, Malaguti, Pino, Micela, Giusi, Middleton, Kevin, Min, Michiel, Moneti, Andrea, Morales, Juan Carlos, Mugnai, Lorenzo, Ollivier, Marc, Pace, Emanuele, Papageorgiou, Andreas, Pilbratt, Goran, Puig, Ludovic, Rataj, Miroslaw, Ray, Tom, Ribas, Ignasi, Rocchetto, Marco, Sarkar, Subhajit, Selsis, Franck, Taylor, William, Tennyson, Jonathan, Tinetti, Giovanna, Turrini, Diego, Vandenbussche, Bart, Venot, Olivia, Waldmann, Ingo P., Wolkenberg, Paulina, Wright, Gillian, Zapatero Osorio, Maria-Rosa, and Zingales, Tiziano
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- 2018
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10. Design and performance of the Exo-planet Characterisation Observatory (EChO) integrated payload
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Oschmann, Jacobus M., Clampin, Mark, Fazio, Giovanni G., MacEwen, Howard A., Swinyard, Bruce, Tessenyi, Marcel, Tinetti, Giovanna, Waldmann, Ingo, Eccleston, Paul, Ferlet, Marc, Irshad, Ranah, Lim, Tanya, Middleton, Kevin, Bradshaw, Tom, Crook, Martin, Hunt, Tom, Winter, Berend, Bryson, Ian, Bezawada, Naidu, Taylor, William, Bowles, Neil, Pascale, Enzo, Morgante, Gianluca, Pace, Emanuele, Adriani, Alberto, Reess, Jean-Michel, Drossart, Pierre, Coudé du Foresto, Vincent, Ollivier, Marc, Ottensamer, Roland, Rataj, Mirek, Ramos Zapata, Gonzalo, Schrader, Jan-Rutger, Selig, Avri, Isaak, Kate, Linder, Martin, Puig, Ludovic, Hartogh, Paul, Lovis, Christophe, Micela, Giusi, Ribas, Ignasi, Snellen, Ignas, and Beaulieu, Jean-Phillippe
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- 2014
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11. PyLightcurve-torch: a transit modeling package for deep learning applications in PyTorch
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Morvan, Mario, Tsiaras, Angelos, Nikolaou, Nikolaos, and Waldmann, Ingo P.
- Abstract
We present a new open source python package, based on PyLightcurve and PyTorch Paszke et al., tailored for efficient computation and automatic differentiation of exoplanetary transits. The classes and functions implemented are fully vectorised, natively GPU-compatible and differentiable with respect to the stellar and planetary parameters. This makes PyLightcurve-torch suitable for traditional forward computation of transits, but also extends the range of possible applications with inference and optimization algorithms requiring access to the gradients of the physical model. This endeavour is aimed at fostering the use of deep learning in exoplanets research, motivated by an ever increasing amount of stellar light curves data and various incentives for the improvement of detection and characterization techniques.
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- 2021
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12. Observing Exoplanets in the Near-Infrared from a High Altitude Balloon Platform
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Nagler, Peter C., Edwards, Billy, Kilpatrick, Brian, Lewis, Nikole K., Maxted, Pierre, Netterfield, C. Barth, Parmentier, Vivien, Pascale, Enzo, Sarkar, Subhajit, Tucker, Gregory S., and Waldmann, Ingo
- Abstract
Although there exists a large sample of known exoplanets, little data exists that can be used to study their global atmospheric properties. This deficiency can be addressed by performing phase-resolved spectroscopy — continuous spectroscopic observations of a planet’s entire orbit about its host star — of transiting exoplanets. Planets with characteristics suitable for atmospheric characterization have orbits of several days, thus phase curve observations are highly resource intensive, especially for shared use facilities. In this work, we show that an infrared spectrograph operating from a high altitude balloon platform can perform phase-resolved spectroscopy of hot Jupiter-type exoplanets with performance comparable to a space-based telescope. Using the EXoplanet Climate Infrared TElescope (EXCITE) experiment as an example, we quantify the impact of the most important systematic effects that we expect to encounter from a balloon platform. We show an instrument like EXCITE will have the stability and sensitivity to significantly advance our understanding of exoplanet atmospheres. Such an instrument will both complement and serve as a critical bridge between current and future space-based near-infrared spectroscopic instruments.
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- 2019
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13. The Transiting Exoplanet Community Early Release Science Program for JWST
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Bean, Jacob L., Stevenson, Kevin B., Batalha, Natalie M., Berta-Thompson, Zachory, Kreidberg, Laura, Crouzet, Nicolas, Benneke, Björn, Line, Michael R., Sing, David K., Wakeford, Hannah R., Knutson, Heather A., Kempton, Eliza M.-R., Désert, Jean-Michel, Crossfield, Ian, Batalha, Natasha E., Wit, Julien de, Parmentier, Vivien, Harrington, Joseph, Moses, Julianne I., Lopez-Morales, Mercedes, Alam, Munazza K., Blecic, Jasmina, Bruno, Giovanni, Carter, Aarynn L., Chapman, John W., Decin, Leen, Dragomir, Diana, Evans, Thomas M., Fortney, Jonathan J., Fraine, Jonathan D., Gao, Peter, Muñoz, Antonio García, Gibson, Neale P., Goyal, Jayesh M., Heng, Kevin, Hu, Renyu, Kendrew, Sarah, Kilpatrick, Brian M., Krick, Jessica, Lagage, Pierre-Olivier, Lendl, Monika, Louden, Tom, Madhusudhan, Nikku, Mandell, Avi M., Mansfield, Megan, May, Erin M., Morello, Giuseppe, Morley, Caroline V., Nikolov, Nikolay, Redfield, Seth, Roberts, Jessica E., Schlawin, Everett, Spake, Jessica J., Todorov, Kamen O., Tsiaras, Angelos, Venot, Olivia, Waalkes, William C., Wheatley, Peter J., Zellem, Robert T., Angerhausen, Daniel, Barrado, David, Carone, Ludmila, Casewell, Sarah L., Cubillos, Patricio E., Damiano, Mario, Val-Borro, Miguel de, Drummond, Benjamin, Edwards, Billy, Endl, Michael, Espinoza, Nestor, France, Kevin, Gizis, John E., Greene, Thomas P., Henning, Thomas K., Hong, Yucian, Ingalls, James G., Iro, Nicolas, Irwin, Patrick G. J., Kataria, Tiffany, Lahuis, Fred, Leconte, Jérémy, Lillo-Box, Jorge, Lines, Stefan, Lothringer, Joshua D., Mancini, Luigi, Marchis, Franck, Mayne, Nathan, Palle, Enric, Rauscher, Emily, Roudier, Gaël, Shkolnik, Evgenya L., Southworth, John, Swain, Mark R., Taylor, Jake, Teske, Johanna, Tinetti, Giovanna, Tremblin, Pascal, Tucker, Gregory S., Boekel, Roy van, Waldmann, Ingo P., Weaver, Ian C., and Zingales, Tiziano
- Abstract
The James Webb Space Telescope(JWST) presents the opportunity to transform our understanding of planets and the origins of life by revealing the atmospheric compositions, structures, and dynamics of transiting exoplanets in unprecedented detail. However, the high-precision, timeseries observations required for such investigations have unique technical challenges, and prior experience with Hubble, Spitzer, and other facilities indicates that there will be a steep learning curve when JWSTbecomes operational. In this paper, we describe the science objectives and detailed plans of the Transiting Exoplanet Community Early Release Science (ERS) Program, which is a recently approved program for JWSTobservations early in Cycle 1. We also describe the simulations used to establish the program. The goal of this project, for which the obtained data will have no exclusive access period, is to accelerate the acquisition and diffusion of technical expertise for transiting exoplanet observations with JWST, while also providing a compelling set of representative data sets that will enable immediate scientific breakthroughs. The Transiting Exoplanet Community ERS Program will exercise the timeseries modes of all four JWSTinstruments that have been identified as the consensus highest priorities, observe the full suite of transiting planet characterization geometries (transits, eclipses, and phase curves), and target planets with host stars that span an illustrative range of brightnesses. The observations in this program were defined through an inclusive and transparent process that had participation from JWSTinstrument experts and international leaders in transiting exoplanet studies. The targets have been vetted with previous measurements, will be observable early in the mission, and have exceptional scientific merit. Community engagement in the project will be centered on a two-phase Data Challenge that culminates with the delivery of planetary spectra, timeseries instrument performance reports, and open-source data analysis toolkits in time to inform the agenda for Cycle 2 of the JWSTmission.
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- 2018
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