Results 111 to 120 of about 40,892 (232)

Habitability of an exoplanet based on stellar wind

Theoretical and Natural Science
This paper aims to investigate the influence of stellar winds on the atmosphere of exoplanets. Stellar winds, which consist of charged particles produced by stars, can heavily alter and affect the evolution and composition of exoplanet atmospheres.
Changseok Lee
semanticscholar   +1 more source

Characterizing Exoplanet Habitability

A habitable exoplanet is a world that can maintain stable liquid water on its surface. Techniques and approaches to characterizing such worlds are essential, as performing a census of Earth-like planets that may or may not have life will inform our ...
Robinson, Tyler D.
core   +1 more source

Superhabitable Planets Around Mid‐Type K Dwarf Stars Enhance Simulated JWST Observability and Surface Habitability

Astronomische Nachrichten, Volume 346, Issue 2, February 2025.
ABSTRACT In our search for life beyond the Solar System, certain planetary bodies may be more conducive to life than Earth. However, the observability of these “superhabitable” (SH) planets in the habitable zones around K dwarf stars has not been fully modeled. This study addresses this gap by modeling the atmospheres of SH exoplanets.
Iva Vilović, Jayesh Goyal, René Heller, Fanny Marie von Schauenburg   +3 more
wiley   +1 more source

Exoplanet Aeronomy: A Case Study of WASP-69 b’s Variable Thermosphere

The Astronomical Journal
Aeronomy, the study of Earth’s upper atmosphere and its interaction with the local space environment, has long traced changes in the thermospheres of Earth and other solar system planets to solar variability in the X-ray and extreme-ultraviolet ...
W. Garrett Levine, Shreyas Vissapragada, Adina D. Feinstein, George W. King, Aleck Hernandez, Lía Corrales, Michael Greklek-McKeon, Heather A. Knutson   +7 more
doaj   +1 more source

Observations of Exoplanet Atmospheres

, 2015
Detailed characterization of an extrasolar planet's atmosphere provides the best hope for distinguishing the makeup of its outer layers, and the only hope for understanding the interplay between initial composition, chemistry, dynamics & circulation, and
Crossfield, Ian J. M.
core   +1 more source

Novel Graphitic Oxynitrides as Photocatalysts for Sustainable H2 Production and CO2 Valorization. The Importance of Self‐Assembly for Catalytic Activity

ChemSusChem, Volume 18, Issue 3, February 1, 2025.
A novel subclass of graphitic oxynitrides, easily generated from otherwise abundant prebiotic monomers, namely cyanamide and glyoxal, debut in the scenario of sustainable heterogeneous catalysts, as demonstrated through applications to the highly demanding H2 and CO2 agendas.
Nieves Lavado, Rosario Pardo‐Botello, José María Sánchez‐Rodas, R. Fernando Martínez, Vicente Montes, Francisco Javier López‐Tenllado, Pedro Cintas, Reyes Babiano   +7 more
wiley   +1 more source

Preparing for the Early eVolution Explorer: Characterizing the Photochemical Inputs and Transit Detection Efficiencies of Young Planets Using Multiwavelength Flare Observations by TESS and Swift [PDF]

Astronomical Journal
Ultraviolet flare emission can drive photochemistry in exoplanet atmospheres and even serve as the primary source of uncertainty in atmospheric retrievals.
W. Howard, M. MacGregor, A. Feinstein, Laura D. Vega, A. Cody, Neal J. Turner, V. Scott, Jennifer A. Burt, L. Venuti   +8 more
semanticscholar   +1 more source

UV transit observations of EUV-heated expanded thermospheres of Earth-like exoplanets around M-stars: testing atmosphere evolution scenarios

Astrophysics and Space Science, 2011
The detection and investigation of EUV heated, extended and non-hydrostatic upper atmospheres around terrestrial exoplanets would provide important insights into the interaction of the host stars plasma environment as well as the evolution of Earth-type planets their atmospheres and possible magnetic environments.
V. Eybl, Helmut Lammer, Arnold Hanslmeier, J. Weingrill, J. Weingrill, Maxim L. Khodachenko, Manuel Güdel, Mats Holmström, Petra Odert, Martin Leitzinger, B. Dorner, Kristina G. Kislyakova, M. Xiang Grüß, Yu. N. Kulikov, Ansgar Reiners   +14 more
openaire   +3 more sources

Formation of Super-Earths

, 2018
Super-Earths are the most abundant planets known to date and are characterized by having sizes between that of Earth and Neptune, typical orbital periods of less than 100 days and gaseous envelopes that are often massive enough to significantly ...
Andre Izidoro, Angie Wolfgang, Benjamin J. Fulton, Brad M. S. Hansen, Chris W. Ormel, Chris W. Ormel, D Powell, Daniel C. Fabrycky, Eric D. Lopez, Eric D. Lopez, Eric D. Lopez, France Allard, François Fressin, Gennaro D'Angelo, Geoffrey W. Marcy, H Rein, HE Schlichting, Howard Chen, James E. Owen, Jeffrey Fung, JH Steffen, Katherine M. Deck, L Tu, Leslie A. Rogers, LM Weiss, M. Ikoma, Niraj K. Inamdar, Niraj K. Inamdar, Owen R. Lehmer, Peter Goldreich, R Boekel van, Rebekah I. Dawson, RR Rafikov, S Seager, Sheng Jin, Sivan Ginzburg, Sivan Ginzburg, SN Raymond, Y Wu, Yuval Greenzweig   +39 more
core   +1 more source

Initial Thermal States of Super‐Earth Exoplanets and Implications for Early Dynamos

Journal of Geophysical Research: Planets, Volume 130, Issue 2, February 2025.
Abstract The accretion of Earth and the formation of a metallic core released a large amount of primordial heat and may have enabled its evolution into a habitable world. Metal‐silicate segregation likely occurs in super‐Earth exoplanets as well, but its influence on their initial thermal states has not been fully examined.
Nathaniel I. White, Jie Li
wiley   +1 more source