2010A&A...522A..22W


C.D.S. - SIMBAD4 rel 1.7 - 2020.12.02CET11:59:04

2010A&A...522A..22W - Astronomy and Astrophysics, volume 522, A22-22 (2010/11-1)

Is Gliese 581d habitable? Some constraints from radiative-convective climate modeling.

WORDSWORTH R.D., FORGET F., SELSIS F., MADELEINE J.-B., MILLOUR E. and EYMET V.

Abstract (from CDS):

The recently discovered exoplanet Gl 581d is extremely close to the outer edge of its system's habitable zone, which has led to much speculation on its possible climate. We have performed a range of simulations to assess whether, given simple combinations of chemically stable greenhouse gases, the planet could sustain liquid water on its surface. For best estimates of the surface gravity, surface albedo and cloud coverage, we find that less than 10 bars of CO2 is sufficient to maintain a global mean temperature above the melting point of water. Furthermore, even with the most conservative choices of these parameters, we calculate temperatures above the water melting point for CO2 partial pressures greater than about 40 bar. However, we note that as Gl 581d is probably in a tidally resonant orbit, further simulations in 3D are required to test whether such atmospheric conditions are stable against the collapse of CO2 on the surface.

Abstract Copyright:

Journal keyword(s): planets and satellites: atmospheres - planets and satellites: surfaces - planetary systems - planet-star interactions - convection - radiative transfer

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 BD+20 2465 Er* 10 19 36.2808024653 +19 52 12.014037746   10.82 9.52 9.19   dM3 1163 0
2 BD-07 4003d Pl 15 19 26.8271336166 -07 43 20.190958776           ~ 139 1
3 BD-07 4003c Pl 15 19 26.8271336166 -07 43 20.190958776           ~ 96 1
4 BD-07 4003 BY* 15 19 26.8271336166 -07 43 20.190958776 13.403 11.76 10.560 9.461 8.911 M3V 544 2

    Equat.    Gal    SGal    Ecl

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2020.12.02-11:59:04

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