The habitability of super-Earths in Gliese 581

  title={The habitability of super-Earths in Gliese 581},
  author={W. Bloh and C. Bounama and M. Cuntz and S. Franck},
  journal={Astronomy and Astrophysics},
Aims. The planetary system around the M star Gliese 581 consists of a hot Neptune (Gl 581b) and two super-Earths (Gl 581c and Gl 581d). The habitability of this system with respect to the super-Earths is investigated following a concept that studies the long-term possibility of photosynthetic biomass production on a dynamically active planet. Methods. A thermal evolution model for a super-Earth is used to calculate the sources and sinks of atmospheric carbon dioxide. The habitable zone is… Expand

Figures and Tables from this paper

Habitability of the Goldilocks Planet Gliese 581g: Results from Geodynamic Models
Aims: In 2010, detailed observations have been published that seem to indicate another super-Earth planet in the system of Gliese 581 located in the midst of the stellar climatological habitableExpand
Habitability of super-Earths: Gliese 581c & 581d
Abstract The unexpected diversity of exoplanets includes a growing number of super-Earth planets, i.e., exoplanets with masses smaller than 10 Earth masses. Unlike the larger exoplanets previouslyExpand
Atmospheric studies of habitability in the Gliese 581 system
Context. The M-type star Gliese 581 is orbited by at least one terrestrial planet candidate in the habitable zone, i.e. GL 581 d. Orbital simulations have shown that additional planets inside theExpand
Radiative constraints on the habitability of exoplanets Gliese 581c and Gliese 581d
Aims. The M-type star Gliese 581 is likely to have two super-Earth planets, i.e., Gl 581c and Gl 581d. The present study is to investigate their habitability constrained by radiative properties ofExpand
The extrasolar planet Gliese 581d: a potentially habitable planet?
Aims. The planetary system around the M star Gliese 581 contains at least three close-in potentially low-mass planets, Gl 581c, d, and e. In order to address the question of the habitability of GlExpand
The habitability of super-Earths
The unexpected diversity of exoplanets includes a growing number of super Earth-planets, i.e. exoplanets with masses smaller than 10 Earth masses and a similar chemical and mineralogical compositionExpand
Gl581d has a minimum mass of 7 M Earth and is the first detected potentially habitable rocky Super-Earth. Our models confirm that a habitable atmosphere can exist on Gl581d. We derive spectroscopicExpand
Super-Earths and life - a fascinating puzzle: Example GJ 581d
Abstract Spurred by the recent large number of radial velocity detections and the discovery of several transiting system and among those two planets, that are consistent with rocky composition, theExpand
Habitability of super-Earth planets around other suns: models including Red Giant Branch evolution.
A thermal evolution model for a 10 Earth-mass planet orbiting a star like the Sun, based on the integrated system approach, that identifies a so-called photosynthesis-sustaining habitable zone (pHZ), as determined by the limits of biological productivity on the planetary surface. Expand
Photosynthesis in the Milky Way.
Based on the habitable zone approach, one can conclude that complex life forms might be not really “rare” in the Milky Way today. Expand


On the possibility of Earth-type habitable planets around 47 UMa
Abstract We investigate whether Earth-type habitable planets can in principle exist in the planetary system of 47 UMa. The system of 47 UMa consists of two Jupiter-size planets beyond the outer edgeExpand
Dynamic habitability for Earth-like planets in 86 extrasolar planetary systems
Abstract In this paper we estimate the likelihood to find habitable Earth-like planets on stable orbits for 86 selected extrasolar planetary systems, where luminosity, effective temperature andExpand
The habitable zone of Earth-mass planets around 47 UMa: results for land and water worlds
In a previous paper, we showed that Earth-type habitable planets around 47 UMa are in principle possible if a distinct set of conditions is warranted. These conditions include that the Earth-typeExpand
On the possibility of Earth-type habitable planets in the 55 Cancri system.
The likelihood of Earth-type planets around 55 Cancri are in principle possible based on the integrated system approach previously considered, which provides a way of assessing the long-term possibility of photosynthetic biomass production under geodynamic conditions. Expand
Determination of habitable zones in extrasolar planetary systems: Where are Gaia's sisters?
A general modeling scheme for assessing the suitability for life of extrasolar planets is presented. The scheme focuses on the identification of the “habitable zone” in main sequence star planetaryExpand
Habitable zones around main sequence stars.
The results suggest that mid-to-early K stars should be considered along with G stars as optimal candidates in the search for extraterrestrial life. Expand
A reappraisal of the habitability of planets around M dwarf stars.
It is concluded that M dwarf stars may indeed be viable hosts for planets on which the origin and evolution of life can occur and it makes sense to include M dwarfs in programs that seek to find habitable worlds and evidence of life. Expand
Reduction of biosphere life span as a consequence of geodynamics
The long-term co-evolution of the geosphere’biospere complex from the Proterozoic up to 1.5 billion years into the planet’s future is investigated using a conceptual earth system model including theExpand
Climate model studies of synchronously rotating planets.
  • M. Joshi
  • Geology, Medicine
  • Astrobiology
  • 2003
It is reinforced that synchronously rotating planets within the circumstellar habitable zones of M dwarf stars should be habitable, and therefore M dwarf systems should not be excluded in future searches for exoplanets. Expand
Habitability of Known Exoplanetary Systems Based on Measured Stellar Properties
Habitable planets are likely to be broadly Earth-like in composition, mass, and size. Masses are likely to be within a factor of a few of the Earth's mass. Currently, we do not have sufficientlyExpand