Results 21 to 30 of about 2,900,879 (209)
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
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 ...
Samuel Konatham +2 more
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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.
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Interpreting the Atmospheric Composition of Exoplanets: Sensitivity to Planet Formation Assumptions
The Astrophysical Journal, 2022 Abstract Constraining planet formation based on the atmospheric composition of exoplanets is a fundamental goal of the exoplanet community. Existing studies commonly try to constrain atmospheric abundances, or to analyze what abundance patterns a given description of planet formation predicts.
Paul Mollière +15 more
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General circulation modelling of close-in extrasolar giant planets [PDF]
, 2011 PhDA large fraction of the extrasolar planets detected so far are giant planets that have such short orbital periods (a few days) that they are thought to be tidally-synchronised with the host star. Such orbits lead to permanent day/night sides on the
Thrastarson, Heidar Thor
core +4 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
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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 ...
Venot, Olivia +5 more
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exoplanet-dev/exoplanet: exoplanet v0.5.0rc3
, 2021 0.5.0 (2021-05-04) Adds high-level, pure-Theano/Aesara implementation of RegularGridInterpolator to replace compiled version #167 Moves compiled Ops to exoplanet-core making exoplanet a pure-Python package #171 Moves ReboundOp and ReboundOrbit to ...
emilygilbert +10 more
core +1 more source
Using dimers to measure biosignatures and atmospheric pressure for terrestrial exoplanets [PDF]
, 2014 We present a new method to probe atmospheric pressure on Earth-like planets using (O-O) dimers in the near-infrared. We also show that dimer features could be the most readily detectable biosignatures for Earth-like atmospheres and may even be detectable
Misra, A. +3 more
core +1 more source
Correlations between the stellar, planetary, and debris components of exoplanet systems observed by Herschel [PDF]
, 2014 J.P.M., C.E., J.M. and B.M. are partially supported by Spanish grant AYA 2011-26202. This work was supported by the European Union through ERC grant number no.
Lestrade, J.-F. +85 more
core +1 more source