Results 151 to 160 of about 2,690,574 (274)

Atmospheric escape from exoplanets: recent observations and theoretical models [PDF]

open access: yesarXiv
The review aims to give an overview of atmospheric escape processes from exoplanets. I briefly discuss the physics of various escape processes responsible for atmospheric escape across different types of exoplanets. Transmission spectroscopy is one of the major workhorses to observe the escaping atmosphere from exoplanets. I discuss recent observations
arxiv  

WASP-69b’s Escaping Envelope Is Confined to a Tail Extending at Least 7 Rp

open access: yesThe Astrophysical Journal
Studying the escaping atmospheres of highly irradiated exoplanets is critical for understanding the physical mechanisms that shape the demographics of close-in planets.
Dakotah Tyler   +3 more
doaj   +1 more source

The Impact-driven Atmospheric Loss of Super-Earths around Different Spectral Types of Host Stars

open access: yesThe Astrophysical Journal
A planet’s mass loss is important for the its formation and evolution. The radius valley (RV) is believed to be triggered by evaporation-induced mass loss.
Wei Zhong   +3 more
doaj   +1 more source

Reduced Water Loss due to Photochemistry on Terrestrial Planets in the Runaway Greenhouse Phase around Pre-main-sequence M Dwarfs

open access: yesThe Astrophysical Journal
Terrestrial planets currently in the habitable zone around M dwarfs are estimated to have been in runaway greenhouse conditions for up to ∼1 Gyr due to the long-term pre-main-sequence phase of M dwarfs.
Yo Kawamura   +7 more
doaj   +1 more source

The Formation of Double Hot Jupiter Systems through von Zeipel–Lidov–Kozai Migration

open access: yesThe Astrophysical Journal
The von Zeipel–Lidov–Kozai (ZLK) mechanism with tidal friction has been demonstrated as a promising avenue to generate hot Jupiters in stellar binary systems.
Yurou Liu, Tiger Lu, Malena Rice
doaj   +1 more source

Galactic Chemical Evolution of Exoplanet Hosting Stars: Are High-mass Planetary Systems Young? [PDF]

open access: gold, 2022
C. Swastik   +7 more
openalex   +1 more source

Separating Super-puffs versus Hot Jupiters among Young Puffy Planets

open access: yesThe Astrophysical Journal
Discoveries of close-in young puffy ( R _p ≳ 6 R _⊕ ) planets raise the question of whether they are bona fide hot Jupiters or puffed-up Neptunes, potentially placing constraints on the formation location and timescale of hot Jupiters.
Amalia Karalis   +2 more
doaj   +1 more source

Observational Signatures of a Previous Dynamical Instability in Multi-planet M-dwarf Systems

open access: yesThe Astrophysical Journal
We identify observational signatures suggesting a history of dynamical instability in 26 out of 34 M-dwarf multi-planet systems containing no large planets.
Anna C. Childs   +4 more
doaj   +1 more source

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