Results 111 to 120 of about 740,794 (260)
Atmospheric Circulation of Tide-Locked Exoplanets [PDF]
Annual Review of Fluid Mechanics, 2019 Tide-locked planets are planets in which tidal stresses from the host star have spun down the planet's rotation to the point where its length of sidereal day equals its length of year. In a nearly circular orbit, such planets have a permanent dayside and a permanent nightside, leading to extreme heating contrasts.
Pierrehumbert, R, Hammond, M
openaire +2 more sources
Helium Absorption at 1083 nm from Extended Exoplanet Atmospheres: Dependence on Stellar Radiation [PDF]
Astrophysical Journal, 2019 Strong absorption signatures in the helium line at 1083 nm have recently been detected in transmission spectra of several close-in exoplanets. This absorption line originates from neutral helium atoms in an excited, metastable 23S state.
A. Oklopčić
semanticscholar +1 more source
The Thermal Emission Spectrum of the Nearby Rocky Exoplanet LTT 1445A b from JWST MIRI/LRS
The Astronomical JournalThe nearby transiting rocky exoplanet LTT 1445A b presents an ideal target for studying atmospheric retention in terrestrial planets orbiting M dwarfs.
Patcharapol Wachiraphan +9 more
doaj +1 more source
ATMOSPHERIC CHEMISTRY OF VENUS-LIKE EXOPLANETS [PDF]
The Astrophysical Journal, 2011 We use thermodynamic calculations to model atmospheric chemistry on terrestrial exoplanets that are hot enough for chemical equilibira between the atmosphere and lithosphere, as on Venus. The results of our calculations place constraints on abundances of spectroscopically observable gases, the surface temperature and pressure, and the mineralogy of the
Laura Schaefer, Bruce Fegley
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Transiting Exoplanets with JWST
, 2008 The era of exoplanet characterization is upon us. For a subset of exoplanets -- the transiting planets -- physical properties can be measured, including mass, radius, and atmosphere characteristics.
A. Burrows +49 more
core +1 more source
Searching for Neutral Hydrogen Escape from the 120 Myr Old Sub-Neptune HIP94235b using HST
The Astronomical JournalHIP94235 b, a 120 Myr old sub-Neptune, provides us the unique opportunity to study mass loss at a pivotal stage of the system’s evolution: the end of a 100 Myr old phase of intense XUV irradiation.
Ava Morrissey +11 more
doaj +1 more source
On Atmospheric Retrievals of Exoplanets with Inhomogeneous Terminators
The Astrophysical Journal, 2022 Abstract The complexity of atmospheric retrieval models is largely data-driven, and one-dimensional models have generally been considered adequate with current data quality. However, recent studies have suggested that using 1D models in retrievals can result in anomalously cool terminator temperatures and biased abundance estimates even ...
Welbanks, L, Madhusudhan, N
openaire +2 more sources
Photochemistry in Hot H2-dominated Exoplanet Atmospheres [PDF]
Astrophysical Journal, 2019 Photochemistry has the potential to substantially impact the atmospheric composition of exoplanets with consequences on the radiative transfer, thermal structure, and dynamics of the atmospheres, particularly in UV-rich stellar environments.
B. Fleury +3 more
semanticscholar +1 more source
On the Stability of Super-Earth Atmospheres
, 2012 We investigate the stability of super Earth atmospheres around M stars using a 7-parameter, analytical framework. We construct stability diagrams in the parameter space of exoplanetary radius versus semi-major axis and elucidate the regions in which the ...
Heng, Kevin, Kopparla, Pushkar
core +1 more source
The Astrophysical JournalWe present a catalog of uniformly processed 3.6 μ m and 4.5 μ m band exoplanet thermal phase curves based on Infrared Array Camera observations obtained from the Spitzer Heritage Archive.
Mark R. Swain +7 more
doaj +1 more source