Results 1 to 10 of about 59,298 (206)
Composition of terrestrial exoplanet atmospheres from meteorite outgassing experiments [PDF]
Nature Astronomy, 2021 42 pages, 9 Figures, 2 Tables, 4 Supplementary Figures, 3 Supplementary Tables, published in Nature Astronomy (2021)
Maggie A. Thompson +5 more
openaire +8 more sources
The atmospheres of rocky exoplanets [PDF]
Astronomy & Astrophysics, 2022 Clouds are an integral part of planetary atmospheres, with most planets hosting clouds. Understanding not only the formation, but also the composition of clouds, is crucial to understand future observations. As observations of the planet’s surface will remain very difficult, it is essential to link the observable high atmosphere gas and cloud ...
O. Herbort +3 more
openaire +6 more sources
Conclusive Evidence for a Population of Water Worlds around M Dwarfs Remains Elusive
The Astrophysical Journal Letters, 2023 The population of small, close-in exoplanets is bifurcated into super-Earths and sub-Neptunes. We calculate physically motivated mass–radius relations for sub-Neptunes, with rocky cores and H/He-dominated atmospheres, accounting for their thermal ...
James G. Rogers +2 more
doaj +1 more source
A better characterization of the chemical composition of exoplanets atmospheres with ARIEL [PDF]
Experimental Astronomy, 2018 Since the discovery of the first extrasolar planet more than twenty years ago, we have discovered nearly four thousand planets orbiting stars other than the Sun. Current observational instruments (on board the Hubble Space Telescope, Spitzer, and on ground-based facilities) have allowed the scientific community to obtain important information on the ...
Olivia Venot +8 more
openaire +6 more sources
The influence of bulk composition on the long-term interior-atmosphere evolution of terrestrial exoplanets [PDF]
Astronomy & Astrophysics, 2020 Aims.The secondary atmospheres of terrestrial planets form and evolve as a consequence of interaction with the interior over geological time. We aim to quantify the influence of planetary bulk composition on the interior–atmosphere evolution for Earth-sized terrestrial planets to aid in the interpretation of future observations of terrestrial exoplanet
Maxim D. Ballmer +5 more
openaire +6 more sources
, 2017 For an assessment of the detectability of molecular concentrations from transit spectra of Earth-like exoplanets, occultation spectra observed by an operational Earth observation satellite mission have been modeled with a line-by-line infrared radiative transfer code.
Steffen Städt +3 more
+5 more sources
Spectral Retrieval with JWST Photometric data: a Case Study for HIP 65426 b
The Astronomical Journal, 2023 Half of the JWST high-contrast imaging objects will only have photometric data as of Cycle 2. However, to better understand their atmospheric chemistry that informs formation origin, spectroscopic data are preferred.
Ji Wang
doaj +1 more source
THE INFLUENCE OF THE EXTREME ULTRAVIOLET SPECTRAL ENERGY DISTRIBUTION ON THE STRUCTURE AND COMPOSITION OF THE UPPER ATMOSPHERE OF EXOPLANETS [PDF]
The Astrophysical Journal, 2016 ABSTRACT By varying the profiles of stellar extreme ultraviolet (EUV) spectral energy distributions (SEDs), we tested the influences of stellar EUV SEDs on the physical and chemical properties of an escaping atmosphere. We apply our model to study four exoplanets: HD 189733b, HD 209458b, GJ 436b, and Kepler-11b.
Guo, J. H., Ben-Jaffel, Lotfi
openaire +4 more sources
Exoplanet albedo spectra and colors as a function of planet phase, separation, and metallicity [PDF]
, 2010 First generation optical coronagraphic telescopes will obtain images of cool gas and ice giant exoplanets around nearby stars. The albedo spectra of exoplanets at planet-star separations larger than about 1 AU are dominated by reflected light to beyond 1
Ackerman +58 more
core +2 more sources