Results 41 to 50 of about 46,669 (261)

Nightside condensation of iron in an ultra-hot giant exoplanet [PDF]

Nature, 2020
Ultrahot giant exoplanets receive thousands of times Earth’s insolation1,2. Their high-temperature atmospheres (greater than 2,000 kelvin) are ideal laboratories for studying extreme planetary climates and chemistry3–5. Daysides are predicted to be cloud-
D. Ehrenreich, C. Lovis, R. Allart, M. Zapatero Osorio, F. Pepe, S. Cristiani, R. Rebolo, Nuno C. Santos, F. Borsa, O. Demangeon, X. Dumusque, J. I. González Hernández, N. Casasayas-Barris, D. Ségransan, S. Sousa, M. Abreu, V. Adibekyan, M. Affolter, C. Allende Prieto, Y. Alibert, M. Aliverti, D. Alves, M. Amate, G. Ávila, V. Baldini, T. Bandy, W. Benz, A. Bianco, É. Bolmont, F. Bouchy, V. Bourrier, C. Broeg, A. Cabral, G. Calderone, E. Pallé, H. Cegla, R. Cirami, J. Coelho, P. Conconi, I. Coretti, C. Cumani, G. Cupani, H. Dekker, B. Delabre, S. Deiries, V. D'Odorico, P. Di Marcantonio, P. Figueira, A. Fragoso, L. Génolet, M. Genoni, R. Génova Santos, N. Hara, I. Hughes, O. Iwert, F. Kerber, J. Knudstrup, M. Landoni, B. Lavie, J. Lizon, M. Lendl, Gaspare Lo Curto, C. Maire, A. Manescau, C. Martins, D. Mégevand, A. Mehner, G. Micela, A. Modigliani, P. Molaro, M. Monteiro, M'ario J. P. F. G. Monteiro, M. Moschetti, Eric Müller, Nelson Nunes, L. Oggioni, A. Oliveira, G. Pariani, L. Pasquini, E. Poretti, J. Rasilla, E. Redaelli, M. Riva, Samuel Santana Tschudi, P. Santin, P. Santos, A. S. Segovia Milla, J. Seidel, D. Sosnowska, A. Sozzetti, P. Spanò, Alejandro Suárez Mascareño, H. Tabernero, F. Tenegi, S. Udry, A. Zanutta, F. Zerbi   +96 more
semanticscholar   +1 more source

Chemical Abundances for 25 JWST Exoplanet Host Stars with KeckSpec [PDF]

Research Notes of the AAS, 2022
Using a data-driven machine learning tool we report T eff, log(g) , vsin(i) , and elemental abundances for 15 elements (C, N, O, Na, Mg, Al, Si, Ca, Ti, V, Cr, Mn, Fe, Ni, Y) for a sample of 25 exoplanet host stars targeted by JWST's first year of ...
A. Polanski, I. Crossfield, A. Howard, H. Isaacson, M. Rice   +4 more
semanticscholar   +1 more source

Exoplanet imaging data challenge: benchmarking the various image processing methods for exoplanet detection [PDF]

, 2020
The Exoplanet Imaging Data Challenge is a community-wide effort meant to offer a platform for a fair and common comparison of image processing methods designed for exoplanet direct detection. For this purpose, it gathers on a dedicated repository (Zenodo)
Desgrange, Célia, Schreiber, Laura, Bonse, M. J., Bonse, Markus Johannes, Fuhrmann, T., Cantalloube, Faustine, Dino Mesa, Kenworthy, M., Samland, Matthias, Nasedkin, E., Ruffio, J.-B., Henning, Th., Tiffany Meshkat, Bonse, Markus, Jensen-Clem, R., André Müller, Sébastien Piérard, Schmidt, Dirk, Marc Van Droogenbroeck, Michael Bottom, Regis Bacher, Henning, Thomas H., Flasseur, O., Adaptive Optics Systems VII, Kenworthy, Matthew, Jean-Baptiste Ruffio, Bottom, Michael, Desgrange, C., Célia Desgrange, Mawet, D., Absil, Olivier, Pairet, Benoit, Müller, Andreas, Cantero Mitjans, Carles, Markus Bonse, Benoit Pairet, Bottom, M., Müller, A., Bacher, Raphael, Van Droogenbroeck, Marc, Stone, Jordan, Stone, J., Fuhrmann, Thomas, Mouillet, David, Samland, M., Flasseur, Olivier, Cantero, Carles, Henning, Thomas, Jensen-Clem, Rebecca, Ruffio, Jean-Baptiste, Piérard, Sébastien, Müller, André, Mouillet, D., Meshkat, T., Mesa, Dino, Vernet, Elise, Gomez Gonzalez, Carlos, Olivier Absil, Carles Cantero, Meshkat, Tiffany, Pairet, B., Cantalloube, F., Mesa, D., Bacher, Regis, Carl-Henrik Dahlqvist, Matthias Samland, Thomas H. Henning, Gomez-Gonzalez, Carlos, Dahlqvist, Carl-Henrik, Faustine Cantalloube, Matthew Kenworthy, Bacher, R., Nasedkin, Evert, Carlos Gomez-Gonzalez, Olivier Flasseur, Thomas Fuhrmann, Rebecca Jensen-Clem, Evert Nasedkin, Dimitri Mawet, Mawet, Dimitri, Jordan Stone, David Mouillet   +81 more
core   +1 more source

Efficient metal emissions in the upper atmospheres of close-in exoplanets

Earth and Planetary Physics, 2018
Atmospheric escape is a key process controlling the long term evolution of planets. Radiative cooling competes for energy against atmospheric escape in planetary upper atmospheres.
Lei Liu, Feng Tian
doaj   +1 more source

The Peak Absorbance Wavelength of Photosynthetic Pigments Around Other Stars From Spectral Optimization

Frontiers in Astronomy and Space Sciences, 2021
In the search for life on other planets, the presence of photosynthetic surface vegetation may be detectable from the colors of light it reflects. On the modern Earth, this spectral reflectance is characterized by a steep increase in reflectance between ...
Owen R. Lehmer, Owen R. Lehmer, David C. Catling, Mary N. Parenteau, Nancy Y. Kiang, Tori M. Hoehler   +5 more
doaj   +1 more source

Silicate clouds and a circumplanetary disk in the YSES-1 exoplanet system [PDF]

Nature
Young exoplanets provide an important link between understanding planet formation and atmospheric evolution1. Direct imaging spectroscopy allows us to infer the properties of young, wide-orbit, giant planets with high signal-to-noise ratio.
K. Hoch, Melanie J. Rowland, S. Petrus, E. Nasedkin, Carl Ingebretsen, J. Kammerer, M. Perrin, V. D'Orazi, W. Balmer, Travis Barman, M. Bonnefoy, G. Chauvin, Christine Chen, R. D. de Rosa, Julien H. V. Girard, Eileen C. Gonzales, M. Kenworthy, Q. Konopacky, Bruce A. Macintosh, Sarah E. Moran, C. Morley, P. Palma-Bifani, L. Pueyo, B. Ren, E. Rickman, J. Ruffio, C. Theissen, Ward-Duong Kim, Ya-Peng Zhang   +28 more
semanticscholar   +1 more source

Revisiting the Planet Mass and Stellar Metallicity Relation for Low-Mass Exoplanets Orbiting GKM Class Stars

Universe, 2021
The growing database of exoplanets has shown us the statistical characteristics of various exoplanet populations, providing insight towards their origins.
Jonathan H. Jiang, Daniel Zhao, Xuan Ji, Bohan Xie, Kristen A. Fahy   +4 more
doaj   +1 more source

Effect of Laboratory Reagents for Cleaning Modern Contamination on the δ¹⁵N Integrity of Nitrogen-Poor Samples. [PDF]

Rapid Commun Mass Spectrom
ABSTRACT Rationale Nitrogen isotope values have been widely used for tracing ancient biogeochemical processes, but contaminant‐sensitive materials, such as Precambrian sedimentary rocks, meteorites, or returned extraterrestrial samples, often have low nitrogen levels and are thus vulnerable to modern organic contamination.
Bubphamanee K, Schauer A, Buick R.
europepmc   +2 more sources

A high internal heat flux and large core in a warm Neptune exoplanet [PDF]

Nature
Interactions between exoplanetary atmospheres and internal properties have long been proposed to be drivers of the inflation mechanisms of gaseous planets and apparent atmospheric chemical disequilibrium conditions1.
L. Welbanks, T. Bell, T. Beatty, M. Line, K. Ohno, J. Fortney, E. Schlawin, T. Greene, Emily Rauscher, P. McGill, Matthew M. Murphy, V. Parmentier, Yao Tang, Isaac R. Edelman, S. Mukherjee, Lindsey S. Wiser, P. Lagage, A. Dyrek, Kenneth E. Arnold   +18 more
semanticscholar   +1 more source

Early Release Science of the exoplanet WASP-39b with JWST NIRSpec G395H [PDF]

Nature, 2022
Measuring the abundances of carbon and oxygen in exoplanet atmospheres is considered a crucial avenue for unlocking the formation and evolution of exoplanetary systems^ 1 , 2 .
L. Alderson, H. Wakeford, Munazza K. Alam, N. Batalha, J. Lothringer, Jéa I. Adams Redai, S. Barat, J. Brande, M. Damiano, T. Daylan, N. Espinoza, L. Flagg, Jayesh M. Goyal, D. Grant, Ren-Yu Hu, J. Inglis, Elspeth K. H. Lee, T. Mikal-Evans, L. Ramos-Rosado, P. Roy, N. Wallack, N. Batalha, J. Bean, B. Benneke, Z. Berta-Thompson, A. Carter, Q. Changeat, Knicole D. Colón, I. Crossfield, Jean-Michel Désert, D. Foreman-Mackey, N. P. Gibson, L. Kreidberg, M. Line, M. L'opez-Morales, K. Molaverdikhani, S. Moran, G. Morello, J. Moses, S. Mukherjee, E. Schlawin, D. Sing, K. Stevenson, Jake Taylor, Keshav Aggarwal, E. Ahrer, Natalie H. Allen, J. Barstow, T. Bell, J. Blecic, S. Casewell, Kathy L. Chubb, N. Crouzet, P. Cubillos, L. Decin, A. Feinstein, J. Fortney, J. Harrington, K. Heng, N. Iro, E. Kempton, J. Kirk, H. Knutson, J. Krick, J. Leconte, M. Lendl, R. MacDonald, L. Mancini, M. Mansfield, E. May, N. Mayne, Y. Miguel, Nikolay K. Nikolov, Kazumasa Ohno, E. Pallé, V. Parmentier, Dominique J. M. Petit Dit de la Roche, C. Piaulet, D. Powell, B. Rackham, S. Redfield, Laura K. Rogers, Z. Rustamkulov, Xianyu Tan, P. Tremblin, Shang-Min Tsai, J. D. Turner, M. de Val-Borro, O. Venot, L. Welbanks, P. Wheatley, Xi Zhang   +91 more
semanticscholar   +1 more source