publication . Other literature type . Article . Preprint . 2013

STABILIZING CLOUD FEEDBACK DRAMATICALLY EXPANDS THE HABITABLE ZONE OF TIDALLY LOCKED PLANETS

Abbot, D. S.; Yang, J.; Nicolas Cowan;
  • Published: 27 Jun 2013
  • Publisher: IOP Publishing
Abstract
The habitable zone (HZ) is the circumstellar region where a planet can sustain surface liquid water. Searching for terrestrial planets in the HZ of nearby stars is the stated goal of ongoing and planned extrasolar planet surveys. Previous estimates of the inner edge of the HZ were based on one-dimensional radiative-convective models. The most serious limitation of these models is the inability to predict cloud behavior. Here we use global climate models with sophisticated cloud schemes to show that due to a stabilizing cloud feedback, tidally locked planets can be habitable at twice the stellar flux found by previous studies. This dramatically expands the HZ and...
Subjects
arXiv: Astrophysics::Earth and Planetary AstrophysicsAstrophysics::Galaxy AstrophysicsAstrophysics::Solar and Stellar AstrophysicsPhysics::Atmospheric and Oceanic Physics
free text keywords: Astrophysics - Earth and Planetary Astrophysics, Physics - Atmospheric and Oceanic Physics, Space and Planetary Science, Astronomy and Astrophysics, Astrophysics, Terrestrial planet, Habitability of orange dwarf systems, Galactic habitable zone, Exoplanet, Physics, Astronomy, Circumstellar habitable zone, Planet, Planetary habitability, Cloud feedback
Related Organizations
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