Helium Atmospheres on Warm Neptune- and Sub-Neptune-Sized Exoplanets and Applications to GJ 436 b [PDF]
arXiv, 2015 Warm Neptune- and sub-Neptune-sized exoplanets in orbits smaller than Mercury's are thought to have experienced extensive atmospheric evolution. Here we propose that a potential outcome of this atmospheric evolution is the formation of helium-dominated ...
Hu, Renyu, Seager, Sara, Yung, Yuk L.
core +4 more sources
Exoplanet secondary atmosphere loss and revival [PDF]
Proceedings of the National Academy of Sciences, 117, 18264-18271
(2020), 2020 The next step on the path toward another Earth is to find atmospheres similar to those of Earth and Venus - high-molecular-weight (secondary) atmospheres - on rocky exoplanets. Many rocky exoplanets are born with thick (> 10 kbar) H$_2$-dominated atmospheres but subsequently lose their H$_2$; this process has no known Solar System analog.
Edwin S. Kite, Megan N. Barnett
arxiv +6 more sources
The air over there: exploring exoplanet atmospheres [PDF]
arXiv, 2021 Atmospheric compositions for rocky exoplanets will depend strongly on the bulk planetary composition and the orbital position of the planet. Non-traditional gases may be present in the atmospheres of exceptionally hot planets. Atmospheres of more clement planets will depend on the abundances of volatiles acquired during planet formation and atmospheric
Vivien Parmentier, Laura Schaefer
arxiv +5 more sources
High Accuracy Molecular Line Lists for Studies of Exoplanets and Other Hot Atmospheres
Frontiers in Astronomy and Space Sciences, 2022 The desire to characterize and model the atmospheres of the many extrasolar planets that have been discovered over the last three decades is a major driver of current astronomy.
Jonathan Tennyson, Sergey N. Yurchenko
doaj +1 more source
Atmospheres of Rocky Exoplanets
Annual Review of Astronomy and Astrophysics, 2022 Rocky planets are common around other stars, but their atmospheric properties remain largely unconstrained. Thanks to a wealth of recent planet discoveries and upcoming advances in observing capability, we are poised to characterize the atmospheres of dozens of rocky exoplanets in this decade.
Wordsworth, R., Kreidberg, L.
openaire +5 more sources
Simulations of idealised 3D atmospheric flows on terrestrial planets using LFRic-Atmosphere [PDF]
Geoscientific Model Development, 2023 We demonstrate that LFRic-Atmosphere, a model built using the Met Office's GungHo dynamical core, is able to reproduce idealised large-scale atmospheric circulation patterns specified by several widely used benchmark recipes.
D. E. Sergeev +16 more
doaj +1 more source
A Geologic Si‐O‐C Pathway to Incorporate Carbon in Silicates
Geophysical Monograph Series, Page 47-54., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Alexandra Navrotsky +2 more
wiley +2 more sources
ExoGemS Detection of a Metal Hydride in an Exoplanet Atmosphere at High Spectral Resolution
The Astrophysical Journal Letters, 2023 Exoplanet atmosphere studies are often enriched by synergies with brown dwarf analogs. However, many key molecules commonly seen in brown dwarfs have yet to be confirmed in exoplanet atmospheres.
Laura Flagg +9 more
doaj +1 more source
Identification of carbon dioxide in an exoplanet atmosphere [PDF]
Nature, 2022 AbstractCarbon dioxide (CO2) is a key chemical species that is found in a wide range of planetary atmospheres. In the context of exoplanets, CO2is an indicator of the metal enrichment (that is, elements heavier than helium, also called ‘metallicity’)1–3, and thus the formation processes of the primary atmospheres of hot gas giants4–6. It is also one of
The JWST Transiting Exoplanet Community Early Release Science Team +131 more
openaire +11 more sources
The Astrophysical Journal, 2023 In warm (equilibrium temperature
Benjamin Fleury +5 more
doaj +1 more source