Results 91 to 100 of about 581 (180)

Next-generation Improvements in Giant-exoplanet Evolutionary and Structural Models

The Astrophysical Journal
Many evolutionary models of giant exoplanets still rely on simplifying assumptions that are no longer adequate, given detailed constraints from Jupiter, Saturn, and modern exoplanet observations.
Ankan Sur, Roberto Tejada Arevalo, Adam Burrows, Yi-Xian Chen   +3 more
doaj   +1 more source

The First Dedicated Survey of Atmospheric Escape from Planets Orbiting F Stars

The Astronomical Journal
Hydrodynamic escape can strip the envelopes of close-in exoplanets, but most observations of atmospheric mass loss to date have been confined to planets orbiting K and M dwarfs.
Morgan Saidel, Shreyas Vissapragada, Heather A. Knutson, Ethan Schreyer, Michael Greklek-McKeon, Jonathan Gomez Barrientos, W. Garrett Levine, Carlos Gascón, George W. King, Morgan MacLeod, Haedam Im, Nick Tusay   +11 more
doaj   +1 more source

The Orbital Imperative: Charting Cosmic Evolution from Gamma-Ray Bursts to Exoplanet Atmospheres

This paper explores the intricate connection between early universe energetic phenomena, specifically Gamma-Ray Bursts (GRBs), and the later-stage evolution of planetary systems, as evidenced by exoplanet atmospheres. We propose an "orbital imperative" framework, suggesting that gravitational dynamics and the resulting distribution of matter play a ...
Revista, Zen, ASTRO, 10
openaire   +1 more source

Evolution of Atmospheric Composition in Giant Exoplanets with Diluted Cores

Transmission spectroscopy has reported sub-solar C/O ratios (<0.55) for atmospheres of some transiting gas giants/dwarfs (e.g., Sing et al. 2024; Welbanks et al. 2024). However, static disk chemistry models (e.g., Öberg et al. 2011) predict super-solar C/O ratios for protoplanetary disk gas and, consequently, for planetary envelopes.
Matsuo, Hiroki, Kurokawa, Hiroyuki, Tokuno, Takato   +2 more
openaire   +1 more source

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

The 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, Tatsuya Yoshida, Naoki Terada, Yuki Nakamura, Shungo Koyama, Hiroki Karyu, Kaori Terada, Shotaro Sakai   +7 more
doaj   +1 more source

Thermal structure, composition, atmospheric dynamics and long-terme evolution of irradiated exoplanets

Structure thermique, composition, dynamique de l’atmosphère et évolution à long-terme des exoplanètes irradiées Plus d’un millier d’exoplanètes ont été découvertes depuis une dizaine d’années. Plus incroyable encore, nous pouvons maintenant caractériser les atmosphères de ces mondes lointains.
openaire   +2 more sources

The evolution and diversity of rocky planets: From the core to the atmosphere, from the Earth to exoplanets

The evolution and diversity of rocky planets: From the core to the atmosphere, from the Earth to exoplanets
identifier:oai:t2r2.star.titech.ac.jp ...
  +3 more sources

Exo-Geoscience Perspectives Beyond Habitability. [PDF]

Space Sci Rev
Spohn T, Roberge A, Way MJ, Duarte JC, Miozzi F, Baumeister P, Byrne P, Lineweaver CH.   +7 more
europepmc   +1 more source

A young progenitor for the most common planetary systems in the Galaxy. [PDF]

Nature
Livingston JH, Petigura EA, David TJ, Masuda K, Owen J, Nesvorný D, Batygin K, de Leon J, Mori M, Ikuta K, Fukui A, Watanabe N, Orell Miquel J, Murgas F, Parviainen H, Korth J, Libotte F, Abreu García N, Gallardo PPM, Narita N, Pallé E, Tamura M, Yonehara A, Ridden-Harper A, Bieryla A, Trani AA, Mamajek EE, Ciardi DR, Gorjian V, Hillenbrand LA, Rebull LM, Newton ER, Mann AW, Vanderburg A, Stefánsson G, Mahadevan S, Cañas C, Ninan J, Higuera J, Todorov K, Désert JM, Pino L.   +41 more
europepmc   +1 more source

A Stellar magnesium to silicon ratio in the atmosphere of an exoplanet. [PDF]

Nat Commun
Sanchez JA, Smith PCB, Kanumalla K, Welbanks L, Line MR, Pelletier S, Desch S, Young P, Patience J, Bean J, Brogi M, Jaffe D, Mace GN, Mansfield MW, Panwar V, Parmentier V, Pino L, Savel AB, Sluijs LV, Wardenier JP.   +19 more
europepmc   +1 more source