A PALETTE OF CLIMATES FOR GLIESE 581g

被引：120

作者：

Pierrehumbert, R. T. ^{[1
]}

机构：

[1] Univ Chicago, Dept Geophys Sci, Chicago, IL 60201 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2011年 / 726卷 / 01期

关键词：

astrobiology; planetary systems; stars: individual (GJ 581 HIP 74995); SNOWBALL EARTH; ATMOSPHERES; EVOLUTION; PLANETS;

D O I：

10.1088/2041-8205/726/1/L8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider a range of possible climates for the habitable-zone planet candidate, Gliese 581g, contingent on a plausible set of hypothetical atmospheres and assuming the planet to be tide locked. The two most habitable states we find are (1) a nearly airless Super-Europa with thin ice at the substellar point and (2) an "Eyeball Earth" which is mostly frozen but supports a substantial stable pool of open water centered on the substellar point. We discuss the prospects for observational determination of what kind of climate 581g actually supports.

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页数：5

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