Results 101 to 110 of about 467 (180)

Carbon Cycle Imbalances on Arid Terrestrial Planets with Implications for Venus

The Planetary Science Journal
Arid terrestrial exoplanets are potentially abundant and are thus interesting targets in the search for life. In particular, M-dwarf planets such as those in the TRAPPIST-1 system may possess limited surface water, whereas early solar system terrestrials
Haskelle T. White-Gianella, Joshua Krissansen-Totton   +1 more
doaj   +1 more source

Structure and density of silicon carbide to 1.5 TPa and implications for extrasolar planets. [PDF]

Nat Commun, 2022
Kim D, Smith RF, Ocampo IK, Coppari F, Marshall MC, Ginnane MK, Wicks JK, Tracy SJ, Millot M, Lazicki A, Rygg JR, Eggert JH, Duffy TS.   +12 more
europepmc   +1 more source

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

Synergies Between Venus & Exoplanetary Observations: Venus and Its Extrasolar Siblings. [PDF]

Space Sci Rev, 2023
Way MJ, Ostberg C, Foley BJ, Gillmann C, Höning D, Lammer H, O'Rourke J, Persson M, Plesa AC, Salvador A, Scherf M, Weller M.   +11 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

THESIS: terrestrial and habitable zone infrared spectroscopy spacecraft [PDF]

, 2008
THESIS is a concept for a medium class mission designed for spectroscopic characterization of extrasolar planets between 2-14 microns. The concept leverages off the recent first-steps made by Spitzer and Hubble in characterizing the atmospheres of alien ...
Deming, D., Grillmair, C. J., Vasisht, G., Greene, T. P., Burrows, A., Swain, M. R., Akeson, R. L.   +6 more
core  

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

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

Materials under extreme conditions: applications to the study of the interior of solar and extrasolar planets [PDF]

, 2015
Extrasolar planets are formed by accretion of the material available in the initial molecular cloud that forms the protoplanetary disk, which includes silicates, iron, graphite and polycyclic aromatic hydrocarbons.
Gonzalez Cataldo, Felipe Javier
core  

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