Results 31 to 40 of about 94,271 (166)
Rocky Planet or Water World? Observability of Low-density Lava World Atmospheres
The Astrophysical Journal, 2023 Super-Earths span a wide range of bulk densities, indicating a diversity in interior conditions beyond that seen in the solar system. In particular, an emerging population of low-density super-Earths may be explained by volatile-rich interiors.
Anjali A. A. Piette +6 more
doaj +1 more source
Modelling Non-Condensing Compositional Convection for Applications to Super-Earth and Sub-Neptune Atmospheres [PDF]
arXiv, 2023 Compositional convection is atmospheric mixing driven by density variations caused by compositional gradients. Previous studies have suggested that compositional gradients of atmospheric trace species within planetary atmospheres can impact convection and the final atmospheric temperature profile.
arxiv
Chemical Kinetics on Extrasolar Planets [PDF]
Phil. Trans. Roy. Soc. A, 372, 20130073 (2014), 2013 Chemical kinetics plays an important role in controlling the atmospheric composition of all planetary atmospheres, including those of extrasolar planets. For the hottest exoplanets, the composition can closely follow thermochemical-equilibrium predictions, at least in the visible and infrared photosphere at dayside (eclipse) conditions.
arxiv +1 more source
The Runaway Greenhouse Effect on Hycean Worlds
The Astrophysical Journal, 2023 Hycean worlds are a proposed subset of sub-Neptune exoplanets with substantial water inventories, liquid surface oceans, and extended hydrogen-dominated atmospheres favorable for habitability.
Hamish Innes +2 more
doaj +1 more source
Atmospheric Retrieval of Exoplanets [PDF]
, 2018 Exoplanetary atmospheric retrieval refers to the inference of atmospheric properties of an exoplanet given an observed spectrum. The atmospheric properties include the chemical compositions, temperature profiles, clouds/hazes, and energy circulation. These properties, in turn, can provide key insights into the atmospheric physicochemical processes of ...
arxiv +1 more source
3D modelling of the impact of stellar activity on tidally locked terrestrial exoplanets: atmospheric composition and habitability [PDF]
, 2022 Robert J. Ridgway +9 more
openalex +3 more sources
The Astronomical Journal, 2023 Irradiated Jovian atmospheres are complex and dynamic and can undergo temporal variations due to the close proximity of their parent stars. Of the Jovian planets that have been cataloged to date, KELT-9b is the hottest gas giant known, with an ...
Nataliea Lowson +12 more
doaj +1 more source
Ariel Planetary Interiors White Paper [PDF]
, 2021 The recently adopted Ariel ESA mission will measure the atmospheric composition of a large number of exoplanets. This information will then be used to better constrain planetary bulk compositions. While the connection between the composition of a planetary atmosphere and the bulk interior is still being investigated, the combination of the atmospheric ...
arxiv +1 more source
Chemical modeling of exoplanet atmospheres [PDF]
, 2014 The past twenty years have revealed the diversity of planets that exist in the Universe. It turned out that most of exoplanets are different from the planets of our Solar System and thus, everything about them needs to be explored. Thanks to current observational technologies, we are able to determine some information about the atmospheric composition,
arxiv +1 more source
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
arxiv