Results 1 to 10 of about 24,229 (205)

Circumbinary Habitable Zones in the Presence of a Giant Planet [PDF]

Frontiers in Astronomy and Space Sciences, 2021
Determining habitable zones in binary star systems can be a challenging task due to the combination of perturbed planetary orbits and varying stellar irradiation conditions.
Nikolaos Georgakarakos, Nikolaos Georgakarakos, Siegfried Eggl, Siegfried Eggl, Siegfried Eggl, Siegfried Eggl, Ian Dobbs-Dixon, Ian Dobbs-Dixon, Ian Dobbs-Dixon   +8 more
doaj   +5 more sources

Habitable Zones in Binary Star Systems: A Zoology [PDF]

Galaxies, 2020
Several concepts have been brought forward to determine where terrestrial planets are likely to remain habitable in multi-stellar environments. Isophote-based habitable zones, for instance, rely on insolation geometry to predict habitability, whereas ...
Siegfried Eggl, Nikolaos Georgakarakos, Elke Pilat-Lohinger   +2 more
doaj   +5 more sources

The Abundance of Belatedly Habitable Planets and Ambiguities in Definitions of the Continuously Habitable Zone [PDF]

The Astrophysical Journal, 2023
A planet’s history dictates its current potential to host habitable conditions and life. The concept of the continuously habitable zone (CHZ) has been used to define the region around a star most likely to host planets with long-term habitability ...
Noah W. Tuchow, Jason T. Wright
doaj   +2 more sources

A Gaian habitable zone [PDF]

Monthly Notices of the Royal Astronomical Society, 2023
ABSTRACTWhen searching for inhabited exoplanets, understanding the boundaries of the habitable zone around the parent star is the key. If life can strongly influence its global environment, then we would expect the boundaries of the habitable zone to be influenced by the presence of life.
Rudy Arthur, Arwen Nicholson
openaire   +3 more sources

A Catalog of Habitable Zone Exoplanets

The Astronomical Journal, 2023
The search for habitable planets has revealed many planets that can vary greatly from an Earth analog environment. These include highly eccentric orbits, giant planets, different bulk densities, relatively active stars, and evolved stars.
Michelle L. Hill, Kimberly Bott, Paul A. Dalba, Tara Fetherolf, Stephen R. Kane, Ravi Kopparapu, Zhexing Li, Colby Ostberg   +7 more
doaj   +3 more sources

Carbonate-silicate cycle predictions of Earth-like planetary climates and testing the habitable zone concept. [PDF]

Nat Commun, 2020
In the habitable zone concept, a planet’s carbon dioxide-water greenhouse maintains surface liquid water. Here, the authors estimate how many Earthlike exoplanets are needed to detect a relationship between stellar flux and the atmospheric carbon dioxide
Lehmer OR, Catling DC, Krissansen-Totton J.   +2 more
europepmc   +2 more sources

Imaging low-mass planets within the habitable zone of α Centauri. [PDF]

Nat Commun, 2021
Imaging of low-mass exoplanets can be achieved once the thermal background in the mid-infrared (MIR) wavelengths can be mitigated. Here, the authors present a ground-based MIR observing approach enabling imaging low-mass temperate exoplanets around ...
Wagner K, Boehle A, Pathak P, Kasper M, Arsenault R, Jakob G, Käufl U, Leveratto S, Maire AL, Pantin E, Siebenmorgen R, Zins G, Absil O, Ageorges N, Apai D, Carlotti A, Choquet É, Delacroix C, Dohlen K, Duhoux P, Forsberg P, Fuenteseca E, Gutruf S, Guyon O, Huby E, Kampf D, Karlsson M, Kervella P, Kirchbauer JP, Klupar P, Kolb J, Mawet D, N'Diaye M, Orban de Xivry G, Quanz SP, Reutlinger A, Ruane G, Riquelme M, Soenke C, Sterzik M, Vigan A, de Zeeuw T.   +41 more
europepmc   +2 more sources

A New Definition of Exoplanet Habitability: Introducing the Photosynthetic Habitable Zone

The Astrophysical Journal Letters, 2023
It may be possible to detect biosignatures of photosynthesis in an exoplanet’s atmosphere. However, such a detection would likely require a dedicated study, occupying a large amount of telescope time. It is therefore prudent, while searching for signs of
C. Hall, P. C. Stancil, J. P. Terry, C. K. Ellison   +3 more
doaj   +3 more sources

Analysis of Habitability and Stellar Habitable Zones from Observed Exoplanets

Galaxies
The investigation of exoplanetary habitability is integral to advancing our knowledge of extraterrestrial life potential and detailing the environmental conditions of distant worlds. In this analysis, we explore the properties of exoplanets situated with
Jonathan H. Jiang, Philip E. Rosen, Christina X. Liu, Qianzhuang Wen, Yanbei Chen   +4 more
doaj   +3 more sources

Exoplanets around Red Giants: Distribution and Habitability

Galaxies, 2023
As the search for exoplanets continues, more are being discovered orbiting Red Giant stars. We use current data from the NASA Exoplanet Archive to investigate planet distribution around Red Giant stars and their presence in the host’s habitable zone.
Ruixuan E. Chen, Jonathan H. Jiang, Philip E. Rosen, Kristen A. Fahy, Yanbei Chen   +4 more
doaj   +1 more source