Results 91 to 100 of about 5,444 (181)

The Effects of Kinematic Magnetohydrodynamics on the Atmospheric Circulation of Eccentric Hot Jupiters

open access: yesThe Astrophysical Journal
Hot Jupiters are typically considered to be tidally locked due to their short orbital periods. The extreme irradiation can result in atmospheric species becoming thermally ionized on the dayside, which then interact with the planet’s magnetic field by ...
Hayley Beltz   +5 more
doaj   +1 more source

A Large and Variable Leading Tail of Helium in a Hot Saturn Undergoing Runaway Inflation

open access: yesThe Astronomical Journal
Atmospheric escape shapes the fate of exoplanets, with statistical evidence for transformative mass loss imprinted across the mass–radius–insolation distribution.
Michael Gully-Santiago   +16 more
doaj   +1 more source

Evaporation of Close-in Sub-Neptunes by Cooling White Dwarfs

open access: yesThe Astrophysical Journal Letters
Motivated by the recent surge in interest concerning white dwarf (WD) planets, this work presents the first numerical exploration of WD-driven atmospheric escape, whereby the high-energy radiation from a hot/young WD can trigger the outflow of the ...
Elena Gallo   +7 more
doaj   +1 more source

HD 206893 B at High Spectral Resolution with the Keck Planet Imager and Characterizer

open access: yesThe Astronomical Journal
We present an atmospheric characterization and orbital analysis of HD 206893 B, an exceptionally red, L/T-transition substellar companion in a multiplanetary system, via Keck Planet Imager and Characterizer (KPIC) high-resolution ( R ∼ 35,000) K- band ...
Ben Sappey   +40 more
doaj   +1 more source

Atmospheric Collapse and Reinflation through Impacts for Terrestrial Planets around M Dwarfs

open access: yesThe Astrophysical Journal Letters
Detection of an atmosphere around a terrestrial exoplanet will be a major milestone in the field, but our observational capacities are biased towards tidally locked, close-in planets orbiting M dwarf stars. The atmospheres of these planets are vulnerable
Prune C. August   +4 more
doaj   +1 more source

Asymmetries in the Simulated Ozone Distribution on TRAPPIST-1e due to Orography

open access: yesThe Astrophysical Journal
TRAPPIST-1e is a tidally locked rocky exoplanet orbiting the habitable zone of an M dwarf star. Upcoming observations are expected to reveal new rocky exoplanets and their atmospheres around M dwarf stars.
Anand Bhongade   +3 more
doaj   +1 more source

Two-dimensional Eclipse Mapping of the Hot-Jupiter WASP-43b with JWST MIRI/LRS

open access: yesThe Astronomical Journal
We present eclipse maps of the two-dimensional thermal emission from the dayside of the hot-Jupiter WASP-43b, derived from an observation of a phase curve with the JWST MIRI/LRS instrument.
Mark Hammond   +23 more
doaj   +1 more source

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