Results 191 to 200 of about 40,892 (232)

Interpreting exoplanet biosignatures with a coupled atmosphere-interior-geochemical evolution model

, 2021
The atmospheric evolution of rocky planets is shaped by a range of astrophysical, geophysical, and geochemical processes. Interpreting observations of potentially habitable exoplanets will require an improved understanding of how these competing ...
J. Krissansen‐Totton, J. Fortney, F. Nimmo, Nicholas F. Wogan   +3 more
semanticscholar   +3 more sources

Coupling the Atmospheric and Dynamical Evolution of Close-in Exoplanets

, 2021
The vast majority of the detected exoplanets orbit in less than a month around their star, in extreme conditions unmet in the Solar System. The demographics of these close-in planets exhibit a striking feature: the lack of Neptune-size worlds on very short orbits, also dubbed the "Neptunian desert", which challenges our understanding of planetary ...
O. Attia, V. Bourrier
openalex   +2 more sources

EXODUS: A mission to explore exoplanet evolution through understanding atmospheric escape

EXODUS is a proposed mission to study the largely unexplored range of sub-Neptune to Jupiter-sized exoplanets with orbital periods longer than 100 days. The focus of the mission lies in the detection of these planets and characterisation of atmospheric escape to constrain their evolutionary pathways.
Citlali Bruce Rosete, Mireia Leon-Dasi, Marius Anger, Paula Benitez Sesmilo, Mark R. Boyd, Frederik Dall'Omo, Simone Filomeno, Jan‐Vincent Harre, K. Angelique Kahle, Isabel Pitz, Vito Saggese   +10 more
openalex   +2 more sources

Exoplanet Atmospheric Studies At High Spectral Resolution

, 2020
The study of exoplanet atmospheres is essential to understand the formation, evolution and composition of exoplanets. When a planet pass between its host star and an observer, a fraction of the star-light is absorbed by its atmosphere, thus revealing its
R. Allart
semanticscholar   +1 more source

Biomarkers and Tracers of Atmospheric Evolution of Exoplanets In The Spectroscopic Window of Darwin

, 2002
Franck Selsis, F. Billebaud, D. Despois, M. Dobrijévic, J. Kieken, Jérôme Parisot   +5 more
openalex   +2 more sources

The effects of terrestrial exoplanet bulk composition on long-term planetary evolution

, 2020
With more observations of terrestrial exoplanets becoming available every year, the importance of geodynamical studies focusing on exoplanets is increasing. We know from observations that stellar chemical abundances vary in the Solar neighbourhood, which
R. Spaargaren, Haiyang S. Wang, M. Ballmer, S. Mojzsis, P. Tackley   +4 more
semanticscholar   +1 more source

Grid-based exoplanet atmospheric mass-loss predictions via neural networks

Astronomy & Astrophysics
The fast and accurate estimation of planetary mass-loss rates is critical for planet population and evolution modelling. We used machine learning (ML) for fast interpolation across an existing large grid of hydrodynamic upper atmosphere models, providing
Amit Reza, D. Kubyshkina, Luca Fossati, Christiane Helling   +3 more
semanticscholar   +1 more source

Grid-based exoplanet atmospheric mass loss predictions through neural network

arXiv.org
The fast and accurate estimation of planetary mass-loss rates is critical for planet population and evolution modelling. We use machine learning (ML) for fast interpolation across an existing large grid of hydrodynamic upper atmosphere models, providing ...
Amit Reza, D. Kubyshkina, Luca Fossati, Christiane Helling   +3 more
semanticscholar   +1 more source

Investigating the Interplay of Stellar Evolution and Exoplanet Habitability Through Spectroscopy

International Journal of Current Research in Science, Engineering & Technology
The study of stellar evolution and exoplanet habitability is a cornerstone of modern astrophysics, with spectroscopy serving as a vital tool in unraveling the complexities of these phenomena.
D. Tolasa
semanticscholar   +1 more source

Transiting Exoplanet Atmospheres in the Era of JWST

Reviews in Mineralogy & Geochemistry
The field of exoplanet atmospheric characterization has recently made considerable advances with the advent of high-resolution spectroscopy from large ground-based telescopes and the commissioning of the James Webb Space Telescope (JWST). We have entered
E. Kempton, H. Knutson
semanticscholar   +1 more source