Results 31 to 40 of about 6,508 (165)

A giant comet-like cloud of hydrogen escaping the warm Neptune-mass exoplanet GJ 436b [PDF]

, 2015
Exoplanets orbiting close to their parent stars could lose some fraction of their atmospheres because of the extreme irradiation. Atmospheric mass loss primarily affects low-mass exoplanets, leading to suggest that hot rocky planets might have begun as ...
A Ekenbäck, A Lanotte, A Lecavelier des Etangs, A Lecavelier des Etangs, A Lecavelier des Etangs, A Léger, A Vidal-Madjar, Alain Lecavelier des Etangs, Alfred Vidal-Madjar, B Jackson, B-O Demory, D Ehrenreich, D Ehrenreich, D Ehrenreich, David Ehrenreich, David K. Sing, ED Lopez, F Pepe, F Pont, Guillaume Hébrard, HA Knutson, HA Knutson, I Ribas, J Sanz-Forcada, Jean-Michel Désert, JL Linsky, JL Linsky, JM Chadney, JR Kulow, K France, K Poppenhaeger, L Fossati, M Holmström, NM Batalha, Peter J. Wheatley, Stéphane Udry, TA Davis, TT Koskinen, V Bourrier, V Bourrier, V Bourrier, Vincent Bourrier, WB Hubbard, Xavier Bonfils, Xavier Delfosse   +44 more
core   +4 more sources

A Temperature and Abundance Retrieval Method for Exoplanet Atmospheres

, 2009
We present a new method to retrieve molecular abundances and temperature profiles from exoplanet atmosphere photometry and spectroscopy. We run millions of 1D atmosphere models in order to cover the large range of allowed parameter space, and present ...
Madhusudhan, N., Seager, S.
core   +1 more source

Further constraints on the optical transmission spectrum of HAT-P-1b [PDF]

, 2015
We report on novel observations of HAT-P-1 aimed at constraining the optical transmission spectrum of the atmosphere of its transiting Hot-Jupiter exoplanet.
., Alonso, R., Desidera, S., Figueira, P., Iro, N., Martins, J. H. C., Montalto, M., Santos, N. C.   +7 more
core   +2 more sources

Helium Escape in Context: Comparative Signatures of Four Close-in Exoplanets

The Astrophysical Journal
Observations of escaping atmospheres on close-in exoplanets show a wide range in the strength and morphology of He I 10830 Å and H I absorption. Scaling relations attempt to link the He I signal to X-ray and UV irradiation, mass loss, and bulk planetary ...
Anna Ruth Taylor, Tommi T. Koskinen, Chenliang Huang, Anthony Arfaux, Panayotis Lavvas   +4 more
doaj   +1 more source

A Panchromatic Characterization of the Evening and Morning Atmosphere of WASP-107 b: Composition and Cloud Variations, and Insight into the Effect of Stellar Contamination

The Astronomical Journal
Limb-resolved transmission spectroscopy has the potential to transform our understanding of exoplanetary atmospheres. By separately measuring the transmission spectra of the evening and morning limbs, these atmospheric regions can be individually ...
Matthew M. Murphy, Thomas G. Beatty, Everett Schlawin, Taylor J. Bell, Michael Radica, Thomas D. Kennedy, Nishil Mehta, Luis Welbanks, Michael R. Line, Vivien Parmentier, Thomas P. Greene, Sagnick Mukherjee, Jonathan J. Fortney, Kazumasa Ohno, Lindsey Wiser, Anastasia Triantafillides, Emily Rauscher, Isaac R. Edelman, Marcia J. Rieke   +18 more
doaj   +1 more source

Studying the variability of the He triplet to understand the detection limits of evaporating exoplanet atmospheres

Astronomy & Astrophysics
With more than a dozen significant detections, the helium triplet has emerged as a key tracer of evaporating exoplanet atmospheres. This near-infrared feature can be observed from the ground and holds great promise, especially with upcoming observations provided by new-generation instruments such as the Near Infrared Planet Searcher (NIRPS).
Mercier, Samson Jules, Dumusque, Xavier, Bourrier, Vincent, Al Moulla, Khaled Sleiman, Cretignier, Michaël, Dethier, William, Lo Curto, Gaspare, Figueira, Pedro Ricardo, Lovis, Christophe, Pepe, Francesco Alfonso, Santos, Nuno C., Udry, Stéphane, Wildi, François, Allart, Romain, Baron, Frédérique, Bouchy, François, Carmona, Andres, Cointepas, Marion, Doyon, René, Frensch, Yolanda Gerardina Cécile, Grieves, Nolan, Mignon, Lucile, Nielsen, Louise Dyregaard   +22 more
openaire   +3 more sources

The Bochum Survey of the Southern Galactic Disk: III. Complete Data Release

Astronomische Nachrichten, Volume 347, Issue 3, March 2026.
ABSTRACT The Southern Galactic Disk Survey (GDS) monitored a mosaic of 268 fields along a 6°$$ {6}^{{}^{\circ}} $$‐wide stripe in the southern Galactic disk with simultaneous observations in r′$$ {r}^{\prime } $$ and i′$$ {i}^{\prime } $$ (7m≲r′,i′≲18m$$ {7}^{\mathrm{m}}\lesssim {r}^{\prime },{i}^{\prime}\lesssim {18}^{\mathrm{m}} $$) from September ...
Julia Blex, Moritz Hackstein, Christian Westhues, Michael Ramolla, Markus Demleitner, Dominik J. Bomans, Kerstin Weis, Christofer Fein, Rolf Chini   +8 more
wiley   +1 more source

Wind-AE: A Fast, Open-source 1D Photoevaporation Code with Metal and Multifrequency X-Ray Capabilities

The Astrophysical Journal
Throughout their lives, short-period exoplanets (
Madelyn I. Broome, Ruth Murray-Clay, John R. McCann, James E. Owen   +3 more
doaj   +1 more source

JWST Discovers the Vertical Structure of Uranus' Ionosphere

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract On 19 January 2025, the James Webb Space Telescope (JWST) program # $\mathrm{\#}$5073 observed Uranus for almost a full rotation with NIRSpec. We present the first ever vertical ionospheric profiles of H3+ ${\mathrm{H}}_{3}^{+}$ temperature, volumetric density and total emission.
Paola I. Tiranti, H. Melin, L. Moore, E. M. Thomas, K. L. Knowles, T. S. Stallard, K. Roberts, J. O’Donoghue   +7 more
wiley   +1 more source

Confirmation of a Non‐Transiting Planet in the Habitable Zone of the Nearby M Dwarf L 98‐59

Astronomische Nachrichten, Volume 347, Issue 2, February 2026.
ABSTRACT Only 40 exoplanetary systems with five or more planets are currently known. These systems are crucial for our understanding of planet formation and planet‐planet interaction. The M dwarf L 98‐59 has previously been found to show evidence of five planets, three of which are transiting.
Paul I. Schwarz, Stefan Dreizler, René Heller   +2 more
wiley   +1 more source