Results 91 to 100 of about 10,001 (169)

Toward Reliable Interpretations of Small-exoplanet Compositions: Comparisons and Considerations of Equations of State and Materials Used in Common Rocky Planet Models

The Planetary Science Journal
The bulk compositions of small planets ( R _p < 2 R _⊕ ) are directly linked to their formation histories, making reliable compositional constraints imperative for testing models of planet formation and evolution.
Joseph G. Schulze, Natalie R. Hinkel, Wendy R. Panero, Cayman T. Unterborn   +3 more
doaj   +1 more source

Magnesium oxide-water compounds at megabar pressure and implications on planetary interiors. [PDF]

Nat Commun, 2023
Pan S, Huang T, Vazan A, Liang Z, Liu C, Wang J, Pickard CJ, Wang HT, Xing D, Sun J.   +9 more
europepmc   +1 more source

Haze Optical Depth in Exoplanet Atmospheres Varies with Rotation Rate: Implications for Observations

The Astronomical Journal
Transmission spectroscopy supports the presence of uncharacterized, light-scattering and -absorbing hazes in the atmospheres of many exoplanets. The complexity of factors influencing the formation, 3D transport, radiative impact, and removal of hazes ...
Maureen Cohen, Paul I. Palmer, Adiv Paradise, Massimo A. Bollasina, Paola Ines Tiranti   +4 more
doaj   +1 more source

Ultrahigh-pressure disordered eight-coordinated phase of Mg₂GeO₄: Analogue for super-Earth mantles. [PDF]

Proc Natl Acad Sci U S A, 2022
Dutta R, Tracy SJ, Cohen RE, Miozzi F, Luo K, Yang J, Burnley PC, Smith D, Meng Y, Chariton S, Prakapenka VB, Duffy TS.   +11 more
europepmc   +1 more source

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

The 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, Alexa P. S. Hua, Rebecca G. Martin, Chao-Chin Yang, Aaron M. Geller   +4 more
doaj   +1 more source

Vertically Resolved Magma Ocean-Protoatmosphere Evolution: H₂, H₂O, CO₂, CH₄, CO, O₂, and N₂ as Primary Absorbers. [PDF]

J Geophys Res Planets, 2021
Lichtenberg T, Bower DJ, Hammond M, Boukrouche R, Sanan P, Tsai SM, Pierrehumbert RT.   +6 more
europepmc   +1 more source

Role of Magma Oceans in Controlling Carbon and Oxygen of Sub-Neptune Atmospheres

The Astrophysical Journal
Most exoplanets with a few Earth radii are more inflated than bare-rock planets with the same mass, indicating a substantial volatile amount. Neither the origin of the volatiles nor the planet’s bulk composition can be constrained from the mass–radius ...
Chanoul Seo, Yuichi Ito, Yuka Fujii
doaj   +1 more source

Impact of Cosmic Rays on Atmospheric Ion Chemistry and Spectral Transmission Features of TRAPPIST-1e

The Astrophysical Journal
Ongoing observing projects like the James Webb Space Telescope and future missions offer the chance to characterize Earth-like exoplanetary atmospheres. Thereby, M dwarfs are preferred targets for transit observations, for example, due to their favorable
Konstantin Herbst, Andreas Bartenschlager, John Lee Grenfell, Nicolas Iro, Miriam Sinnhuber, Benjamin Taysum, Fabian Wunderlich, N. Eugene Engelbrecht, Juandre Light, Katlego D. Moloto, Jan-Vincent Harre, Heike Rauer, Franz Schreier   +12 more
doaj   +1 more source

Evaluating the Microbial Habitability of Rogue Planets and Proposing Speculative Scenarios on How They Might Act as Vectors for Panspermia. [PDF]

Life (Basel), 2021
Schulze-Makuch D, Fairén AG.
europepmc   +1 more source

Temporal variation of planetary iron as a driver of evolution. [PDF]

Proc Natl Acad Sci U S A, 2021
Wade J, Byrne DJ, Ballentine CJ, Drakesmith H.   +3 more
europepmc   +1 more source