Results 61 to 70 of about 35,775 (180)

MOA-2011-BLG-293Lb: First Microlensing Planet possibly in the Habitable Zone

, 2013
We used Keck adaptive optics observations to identify the first planet discovered by microlensing to lie in or near the habitable zone, i.e., at projected separation $r_\perp=1.1\pm 0.1\,$AU from its $M_{L}=0.86\pm 0.06\,M_\odot$ host, being the highest ...
Batista, V., Beaulieu, J. -P., Bennett, D. P., Fukui, A., Gaudi, B. S., Gould, A., Sumi, T., Udalski, A., Yee, J. C   +8 more
core   +3 more sources

General Relativity Can Prevent a Runaway Greenhouse on Potentially Habitable Planets Orbiting White Dwarfs

The Astrophysical Journal
Planets orbiting in the habitable zones of white dwarfs have recently been proposed as promising targets for biosignature searches. However, since the white dwarf habitable zone resides at 0.01–0.1 au, planets residing there are subject to tidal heating ...
Eva Stafne, Juliette Becker
doaj   +1 more source

A super-Earth-sized planet orbiting in or near the habitable zone around Sun-like star

, 2013
We present the discovery of a super-earth-sized planet in or near the habitable zone of a sun-like star. The host is Kepler-69, a 13.7 mag G4V-type star.
Barclay, Thomas, Borucki, William J., Bryson, Stephen T., Burke, Christopher J., Caldwell, Douglas A., Christiansen, Jessie L, Ciardi, David, Clarke, Bruce D., Coughlin, Jeffrey L., Fischer, Debra A., Haas, Michael R., Howell, Steve B., Huber, Daniel, Hunter, Roger, Isaacson, Howard, Jenkins, Jon M., Kolbl, Rea, Li, Jie, Lissauer, Jack J., Marcy, Geoffrey W., Mullally, Fergal, Quintana, Elisa V., Rowe, Jason F., Sabale, Anima, Seader, Shawn E., Smith, Jeffrey C., Still, Martin, Tenenbaum, Peter, Thompson, Susan E., Twicken, Joseph D., Uddin, AKM Kamal   +30 more
core   +1 more source

A Terminology and Quantitative Framework for Assessing the Habitability of Solar System and Extraterrestrial Worlds

The Planetary Science Journal
The search for extraterrestrial life in the solar system and beyond is a key science driver in astrobiology, planetary science, and astrophysics. A critical step is the identification and characterization of potential habitats, both to guide the search ...
Dániel Apai, Rory Barnes, Matthew M. Murphy, Tim Lichtenberg, Noah Tuchow, Régis Ferrière, Kevin Wagner, Antonin Affholder, Renu Malhotra, Baptiste Journaux, Allona Vazan, Ramses Ramirez, Abel Méndez, Stephen R. Kane, Veronica H. Klawender, NExSS Quantitative Habitability Science Working Group   +15 more
doaj   +1 more source

Tidal Effects on the Habitability of Exoplanets: The Case of GJ 581 d

, 2010
Tides may be crucial to the habitability of exoplanets. If such planets form around low-mass stars, then those in the circumstellar habitable zone will be close enough to their host stars to experience strong tidal forces.
Barnes, Rory, Greenberg, Richard, Heller, René, Jackson, Brian, Raymond, Sean N.   +4 more
core   +1 more source

Tidal Limits to Planetary Habitability

, 2009
The habitable zones of main sequence stars have traditionally been defined as the range of orbits that intercept the appropriate amount of stellar flux to permit surface water on a planet. Terrestrial exoplanets discovered to orbit M stars in these zones,
Barnes, Barnes, Barnes, Brian Jackson, Butler, Davies, Dickey, Ferraz-Mello, Gaidos, Gounelle, Hut, Ikoma, Jackson, Jackson, Kuchner, Lammer, Mardling, Mayor, McEwen, Raymond, Raymond, Richard Greenberg, Rory Barnes, Sean N. Raymond, Segura, Spiegel, West, Winn, Yoder   +28 more
core   +2 more sources

Statistics and Habitability of F-type Star–Planet Systems

The Astrophysical Journal Supplement Series
F-type star–planet systems represent an intriguing case for habitability studies. Although F-type stars spend considerably less time on the main sequence (MS) than G-, K-, and M-type stars, they still offer a unique set of features, allowing for the ...
Shaan D. Patel, Manfred Cuntz, Nevin N. Weinberg   +2 more
doaj   +1 more source

Design Considerations for a Ground-based Transit Search for Habitable Planets Orbiting M dwarfs

, 2008
By targeting nearby M dwarfs, a transit search using modest equipment is capable of discovering planets as small as 2 Earth radii in the habitable zones of their host stars.
Baraffe I., David Charbonneau, Delfosse X., Mink D. J., Philip Nutzman   +4 more
core   +1 more source

Defining the Really Habitable Zone

, 2020
Since the discovery of the first confirmed exoplanet, observations have revealed a remarkable diversity of worlds. A wide variety of orbital and physical characteristics are detected in the exoplanet population, and much work has been devoted to deciding which of these planets may be suitable for life. Until now, though, little work has been devoted to
Pedbost, Marven F., Pomalgu, Trillean, Lintott, Chris, Eisner, Nora, Nicholson, Belinda   +4 more
openaire   +2 more sources

The Influence of Clouds and Deuterium-burning on Brown Dwarf Habitable Zones

The Astrophysical Journal
To better understand the potential habitability of planets orbiting brown dwarfs, this work presents a new set of equilibrium temperature evolution tracks. Unlike most previous work that relied on analytic scaling relationships for brown dwarf luminosity
Kayla J. Smith, Mark S. Marley
doaj   +1 more source