Results 31 to 40 of about 1,889 (136)

Ultraviolet Photometry and Habitable Zones of over 2700 Planet-hosting Stars

The Astrophysical Journal Supplement Series
The ongoing discovery of exoplanets has sparked significant interest in finding suitable worlds that could potentially support life. Stellar ultraviolet (UV; 100–3000 Å) radiation may play a crucial role in determining the habitability of their planets ...
Xue Li, Song Wang, Henggeng Han, Jifeng Liu   +3 more
doaj   +1 more source

On the Dynamics of Comets in Extrasolar Planetary Systems

, 2019
Since very recently, we acquired knowledge on the existence of comets in extrasolar planetary systems. The formation of comets together with planets around host stars now seems evident.
Beust, Brasser, Brasser, Carusi, Carusi, Cuntz, Eggl, Eiroa, Fouchard, Fouchard, Fouchard, Gonzalez, Hanslmeier, Henry, Kaib, Kaib, Kiefer, Kopparapu, Kovtyukh, Loibnegger, Lovis, Marino, Matrà, Rappaport, Raymond, Rickman, Rickman, Stern, Tuomi, van Belle, Welsh, Welsh, Whipple, Wyatt   +33 more
core   +1 more source

The Five Planets in the Kepler-296 Binary System All Orbit the Primary: A Statistical and Analytical Analysis [PDF]

, 2015
Kepler-296 is a binary star system with two M-dwarf components separated by 0.2 arcsec. Five transiting planets have been confirmed to be associated with the Kepler-296 system; given the evidence to date, however, the planets could in principle orbit ...
Adams, Fred C., Barclay, Thomas, Caldwell, Douglas, Ciardi, David R., Foreman-Mackey, Daniel, Huber, Daniel, Montet, Benjamin T., Quintana, Elisa V.   +7 more
core   +4 more sources

The Ice Cap Zone: A Unique Habitable Zone for Ocean Worlds

, 2018
Traditional definitions of the habitable zone assume that habitable planets contain a carbonate-silicate cycle that regulates CO2 between the atmosphere, surface, and the interior.
Levi, Amit, Ramirez, Ramses M.
core   +1 more source

The Exozodiacal Dust Problem for Direct Observations of ExoEarths [PDF]

, 2012
Debris dust in the habitable zones of stars - otherwise known as exozodiacal dust - comes from extrasolar asteroids and comets and is thus an expected part of a planetary system.
Absil, Olivier, Bryden, Geoffrey, Chen, Christine H., Hinz, Philip M., Kuchner, Marc J., Millan-Gabet, Rafael, Roberge, Aki, Stapelfeldt, Karl R., Team, the NASA ExoPAG SAG #1, Weinberger, Alycia J.   +9 more
core   +5 more sources

Carbon Cycle Instability for High-CO2 Exoplanets: Implications for Habitability

The Astrophysical Journal
Implicit in the definition of the classical circumstellar habitable zone (HZ) is the hypothesis that the carbonate-silicate cycle can maintain clement climates on exoplanets with land and surface water across a range of instellations by adjusting ...
R. J. Graham, R. T. Pierrehumbert
doaj   +1 more source

Survival of Terrestrial Planets in the Presence of Giant Planet Migration

, 2003
The presence of ``Hot Jupiters'', Jovian mass planets with very short orbital periods orbiting nearby main sequence stars, has been proposed to be primarily due to the orbital migration of planets formed in orbits initially much further from the parent ...
Avi M. Mandell, Chambers J. E., Steinn Sigurdsson   +2 more
core   +1 more source

Habitability in 4D: Predicting the Climates of Earth Analogs across Rotation and Orbital Configurations

The Astrophysical Journal
Earth-like planets in the circumstellar habitable zone (HZ) may have dramatically different climate outcomes depending on their spin–orbit parameters, altering their habitability for life as we know it.
Arthur D. Adams, Christopher Colose, Aronne Merrelli, Margaret Turnbull, Stephen R. Kane   +4 more
doaj   +1 more source

Exomoon Habitability and Tidal Evolution in Low-Mass Star Systems

, 2017
Discoveries of extrasolar planets in the habitable zone (HZ) of their parent star lead to questions about the habitability of massive moons orbiting planets in the HZ. Around low-mass stars, the HZ is much closer to the star than for Sun-like stars.
Armstrong, John C., Heller, René, Zollinger, Rhett R.   +2 more
core   +1 more source

Exploring the Effects of Stellar Magnetism on the Potential Habitability of Exoplanets

The Astrophysical Journal
Considerable interest has centered on Earth-like planets orbiting in the circumstellar habitable zone (CHZ) of its star. However, the potential habitability of an exoplanet depends upon a number of additional factors, including the presence and strength ...
Anthony S. Atkinson, David Alexander, Alison O. Farrish   +2 more
doaj   +1 more source