Results 21 to 30 of about 1,575 (209)
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 +4 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 +4 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
Reflected Spectroscopy of Small Exoplanets I: Determining the Atmospheric Composition of Sub-Neptunes Planets [PDF]
The Astronomical Journal, 2021 Abstract Direct imaging of widely separated exoplanets from space will obtain their reflected light spectra and measure their atmospheric properties, and small and temperate planets will be the focus for the next generation of telescopes. In this work, we used our Bayesian retrieval algorithm
Mario Damiano, Renyu Hu
openaire +3 more sources
Effects of Bulk Composition on the Atmospheric Dynamics on Close-in Exoplanets [PDF]
The Astrophysical Journal, 2017 Abstract Super Earths and mini Neptunes likely have a wide range of atmospheric compositions, ranging from low molecular mass atmospheres of H2 to higher molecular atmospheres of water, CO2, N2, or other species. Here we systematically investigate the effects of atmospheric bulk compositions on temperature and wind distributions for ...
Zhang, Xi, Showman, Adam P.
openaire +2 more sources
Atmospheric composition of exoplanets based on the thermal escape of gases and implications for habitability [PDF]
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2020 The detection of habitable exoplanets is an exciting scientific and technical challenge. Owing to the current and most likely long-lasting impossibility of performing in situ exploration of exoplanets, their study and hypotheses regarding their capability to host life will be based on the restricted low-resolution ...
Samuel Konatham +2 more
openaire +3 more sources
Ranges of Atmospheric Mass and Composition of Super‐Earth Exoplanets [PDF]
The Astrophysical Journal, 2008 Terrestrial-like exoplanets may obtain atmospheres from three primary sources: Capture of nebular gases, degassing during accretion, and degassing from subsequent tectonic activity. Here we model degassing during accretion to estimate the range of atmospheric mass and composition on exoplanets ranging from 1 to 30 Earth masses. We use bulk compositions
Elkins-Tanton, L., Seager, S.
openaire +2 more sources
Characterizing Exoplanetary Atmospheres: New Views on Exoplanet Composition and Chemistry
I review the major open science questions in exoplanet atmospheres. These are mainly focused in the areas of understanding atmospheric physics, the atmosphere as a window into other realms of planetary physics, and the atmosphere is a window into ...
Fortney, Jonathan J.
core +2 more sources
A survey of exoplanet phase curves with Ariel [PDF]
, 2021 The ESA-Ariel mission will include a tier dedicated to exoplanet phase curves corresponding to ∼10% of the science time. We present here the current observing strategy for studying exoplanet phase curves with Ariel.
Mendonça, JM +35 more
core +3 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
Spaargaren, Rob J +4 more
openaire +4 more sources