Results 181 to 190 of about 59,298 (206)

The atmospheric composition of the ultra-hot Jupiter WASP-178 b observed with ESPRESSO

Astronomy & Astrophysics
Ultra-hot Jupiters (UHJ) have emerged as ideal testbeds for new techniques for studying exoplanet atmospheres. Only a limited number of them are currently well studied, however.
Y. C. Damasceno, J. Seidel, B. Prinoth, A. Psaridi, E. Esparza-Borges, M. Stangret, N. Santos, M. Zapatero-Osorio, Y. Alibert, R. Allart, T. A. Silva, M. Cointepas, A. R. C. Silva, E. Cristo, P. Marcantonio, D. Ehrenreich, J. Hern'andez, E. Herrero-Cisneros, M. Lendl, J. Lillo-Box, C. Martins, G. Micela, E. Pall'e, S. Sousa, M. Steiner, V. Vaulato, Y. Zhao, F. Pepe   +27 more
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BOWIE-ALIGN: A JWST comparative survey of aligned vs misaligned hot Jupiters to test the dependence of atmospheric composition on migration history

RAS Techniques and Instruments
A primary objective of exoplanet atmosphere characterisation is to learn about planet formation and evolution, however, this is challenged by degeneracies.
James Kirk, E. Ahrer, A. Penzlin, J. E. Owen, Richard A. Booth, L. Alderson, D. Christie, A. Claringbold, E. Esparza-Borges, Chloe Fisher, M. L'opez-Morales, N. Mayne, Mason McCormack, A. Meech, Vatsal Panwar, D. Powell, D. Sergeev, Jake Taylor, Shang-Min Tsai, Daniel Valentine, H. Wakeford, P. Wheatley, M. Zamyatina   +22 more
semanticscholar   +1 more source

Enabling Robust Exoplanet Atmospheric Retrievals with Gaussian Processes

Astrophysical Journal
Atmospheric retrievals are essential tools for interpreting exoplanet transmission and eclipse spectra, enabling quantitative constraints on the chemical composition, aerosol properties, and thermal structure of planetary atmospheres.
Yoav Rotman, L. Welbanks, M. Line, P. McGill, M. Radica, M. Nixon   +5 more
semanticscholar   +1 more source

The effects of terrestrial exoplanet bulk composition on long-term planetary evolution

, 2020
With more observations of terrestrial exoplanets becoming available every year, the importance of geodynamical studies focusing on exoplanets is increasing. We know from observations that stellar chemical abundances vary in the Solar neighbourhood, which
R. Spaargaren, Haiyang S. Wang, M. Ballmer, S. Mojzsis, P. Tackley   +4 more
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A Machine Learning–ready Data Set for Exoplanet Atmospheric Retrieval

Astrophysical Journal Supplement Series
Atmospheric retrieval is a modeling technique used to determine a planet’s atmosphere’s temperature and composition from spectral data. The retrieved atmospheric composition can provide understanding into the surface fluxes of gaseous species necessary ...
Simone Zorzan, Frank Soboczenski, M. O’Beirne, M. D. Himes, M. Lund, Julian C. van Eyken, G. Arney, G. Villanueva, Massimo Mascaro, Shawn D. Domagal-Goldman, A. G. Baydin   +10 more
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NIRPS detection of delayed atmospheric escape from the warm and misaligned Saturn-mass exoplanet WASP-69 b

Astronomy & Astrophysics
Context. Near-infrared high-resolution échelle spectrographs unlock access to fundamental properties of exoplanets, from their atmospheric escape and composition to their orbital architecture, which can all be studied simultaneously from transit ...
Romain Allart, Y. Carteret, V. Bourrier, L. Mignon, F. Baron, C. Cadieux, Andrés Carmona, Christophe Lovis, Hritam Chakraborty, E. Delgado-Mena, Étienne Artigau, Susana C. C. Barros, B. Benneke, X. Bonfils, F. Bouchy, Marta Bryan, B. C. Canto Martins, Ryan Cloutier, Neil J. Cook, Nicolas B. Cowan, X. Delfosse, René Doyon, X. Dumusque, D. Ehrenreich, J. G. González Hernández, D. Lafrèniere, I. de Castro Leão, L. Malo, Claudio Melo, Christoph Mordasini, Francesco Pepe, Rafael Rebolo, J. D. De Medeiros, J. Rowe, Nuno C. Santos, D. Ségransan, A. Suárez Mascareño, S. Udry, Diana Valencia, G. Wade, Manuel Abreu, José L. A. Aguiar, B. Akinsanmi, Guillaume Allain, J. Almenara, K. Al Moulla, Tomy Arial, Hugues Auger, Luc Bazinet, N. Blind, A. Boucher, Christopher Broeg, D. Brousseau, A. Cabral, Z. Challita, J. Coelho, M. Cointepas, Ana Rita Costa Silva, E. Cristo, A. Darveau-Bernier, Laurie Dauplaise, Roseane de Lima Gomes, D. B. de Freitas, D. O. Fontinele, T. Forveille, Yolanda G. C. Frensch, Jonathan Gagné, Frédéric Genest, F. Gracia Témich, N. Grieves, Olivier Hernandez, J. Hoeijmakers, N. Hubin, F. Jahandar, R. Jayawardhana, D. Kerley, Johann Kolb, Vigneshwaran Krishnamurthy, Alexandrine L’Heureux, M. Lendl, Olivia Lim, G. Curto, Jaymie Matthews, A. M. Martins, Jean-S'ebastien Mayer, S. Metchev, Y. Messias, Leslie Moranta, D. Mounzer, N. Nari, L. Nielsen, A. Osborn, L. Parc, L. Pasquini, S. Pelletier, C. Péroux, C. Piaulet, Mykhaylo Plotnykov, E. Pompei, Anne-Sophie Poulin-Girard, A. Psaridi, J. L. Rasilla, V. Reshetov, Jonathan Saint-Antoine, J. Sanz-Forcada, Julia Seidel, Ivo Saviane, J. Gomes da Silva, D. Sosnowska, Avidaan Srivastava, A. K. Stefanov, M'arcio A. Teixeira, S. Thibault, P. Vallée, T. Vandal, V. Vaulato, J. Wardenier, B. Wehbe, Drew Weisserman, François Wildi, Vincent Yariv, G. Zins   +121 more
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A secondary atmosphere on the rocky Exoplanet 55 Cancri e.

Nature
Characterizing rocky exoplanets is a central endeavor of astronomy, and yet the search for atmospheres on rocky exoplanets has hitherto resulted in either tight upper limits on the atmospheric mass1-3 or inconclusive results4-6.
R. Hu, A. Bello-Arufe, Michael Zhang, Kimberly Paragas, M. Zilinskas, C. van Buchem, Michael Bess, J. Patel, Yuichi Ito, M. Damiano, M. Scheucher, Apurva V. Oza, H. Knutson, Yamila Miguel, D. Dragomir, A. Brandeker, B. Demory   +16 more
semanticscholar   +1 more source

A benchmark JWST near-infrared spectrum for the exoplanet WASP-39 b

Nature Astronomy
Observing exoplanets through transmission spectroscopy supplies detailed information about their atmospheric composition, physics and chemistry. Before the James Webb Space Telescope (JWST), these observations were limited to a narrow wavelength range ...
A. Carter, E. May, N. Espinoza, L. Welbanks, E. Ahrer, L. Alderson, R. Brahm, A. Feinstein, D. Grant, M. Line, G. Morello, R. O’Steen, M. Radica, Z. Rustamkulov, K. Stevenson, J. D. Turner, M. Alam, D. R. Anderson, N. Batalha, M. Battley, D. Bayliss, J. L. Bean, B. Benneke, Z. Berta-Thompson, J. Brande, E. Bryant, M. Burleigh, L. Coulombe, I. Crossfield, M. Damiano, J. Désert, L. Flagg, S. Gill, J. Inglis, J. Kirk, H. Knutson, L. Kreidberg, M. López Morales, M. Mansfield, S. Moran, C. Murray, M. Nixon, D. Petit dit de la Roche, B. Rackham, E. Schlawin, D. Sing, H. Wakeford, N. Wallack, P. Wheatley, Sebastian Zieba, K. Aggarwal, J. Barstow, T. Bell, J. Blecic, C. Caceres, N. Crouzet, P. Cubillos, T. Daylan, M. de Val-Borro, L. Decin, J. J. Fortney, N. Gibson, K. Heng, R. Hu, E. Kempton, P. Lagage, J. Lothringer, J. Lustig-Yaeger, L. Mancini, N. Mayne, L. Mayorga, K. Molaverdikhani, E. Nasedkin, K. Ohno, V. Parmentier, D. Powell, S. Redfield, P. Roy, J. Taylor, X. Zhang   +79 more
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Venus as an Exoplanet: Effect of varying stellar, orbital, planetary andatmospheric properties upon composition, habitability and detectability

The newly selected Venus missions EnVISION and VERITAS (Venus Emissivity, Radio Science, InSAR, Topography, and Spectroscopy) offer new opportunities for studying Venus but will also contribute to furthering our knowledge of Venus as an exoplanet. Hot rocky planets are favored targets due to generally more frequent transits than cooler Earth-like ...
John Lee Grenfell, Joern Helbert, Gabriele Arnold, Konstantin Herbst, Miriam Sinnhuber, Heike Rauer   +5 more
openaire   +3 more sources

Detection of an Earth-sized exoplanet orbiting the nearby ultracool dwarf star SPECULOOS-3

Nature Astronomy
Located at the bottom of the main sequence, ultracool dwarf stars are widespread in the solar neighbourhood. Nevertheless, their extremely low luminosity has left their planetary population largely unexplored, and only one of them, TRAPPIST-1, has so far
M. Gillon, P. Pedersen, B. Rackham, G. Dransfield, E. Ducrot, K. Barkaoui, A. Burdanov, U. Schroffenegger, Y. Gómez Maqueo Chew, S. Lederer, R. Alonso, A. Burgasser, S. Howell, N. Narita, J. de Wit, B. Demory, D. Queloz, A. Triaud, L. Delrez, E. Jehin, M. Hooton, Lionel J. Garcia, Clàudia Jano Muñoz, C. Murray, F. Pozuelos, D. Sebastian, M. Timmermans, Samantha J. Thompson, S. Zúñiga-Fernández, J. Aceituno, C. Aganze, P. J. Amado, T. Baycroft, Z. Benkhaldoun, D. Berardo, É. Bolmont, C. Clark, Y. Davis, Fatemeh Davoudi, Zoe L. de Beurs, J. D. de Leon, M. Ikoma, K. Ikuta, K. Isogai, I. Fukuda, A. Fukui, Roman Gerasimov, M. Ghachoui, M. Günther, S. Hasler, Y. Hayashi, Kevin Heng, R. Hu, T. Kagetani, Yugo Kawai, K. Kawauchi, D. Kitzmann, D. Koll, M. Lendl, J. Livingston, Xintong Lyu, E. Meier Valdés, M. Mori, J. McCormac, F. Murgas, P. Niraula, E. Pallé, I. Plauchu-Frayn, R. Rebolo, L. Sabin, Yannick Schackey, N. Schanche, Franck Selsis, A. Sota, M. Stalport, M. Standing, K. Stassun, Motohide Tamura, Y. Terada, C. Theissen, M. Turbet, V. Van Grootel, R. Varas, N. Watanabe, Francis Zong Lang   +84 more
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