HABITABILITY OF EARTH-MASS PLANETS AND MOONS IN THE KEPLER-16 SYSTEM

被引：27

作者：

Quarles, B. ^{[1
]}

Musielak, Z. E. ^{[1
]}

Cuntz, M. ^{[1
]}

机构：

[1] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA

来源：

ASTROPHYSICAL JOURNAL | 2012年 / 750卷 / 01期

关键词：

astrobiology; binaries: general; celestial mechanics; planetary systems; stars: individual (Kepler-16); STELLAR COMPANIONS; STARS; MULTIPLICITY; EXOMOONS;

D O I：

10.1088/0004-637X/750/1/14

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We demonstrate that habitable Earth-mass planets and moons can exist in the Kepler-16 system, known to host a Saturn-mass planet around a stellar binary, by investigating their orbital stability in the standard and extended habitable zone (HZ). We find that Earth-mass planets in satellite-like (S-type) orbits are possible within the standard HZ in direct vicinity ofKepler-16b, thus constituting habitable exomoons. However, Earth-mass planets cannot exist in planetary-like (P-type) orbits around the two stellar components within the standard HZ. Yet, P-type Earth-mass planets can exist superior to the Saturnian planet in the extended HZ pertaining to considerably enhanced back-warming in the planetary atmosphere if facilitated. We briefly discuss the potential detectability of such habitable Earth-mass moons and planets positioned in satellite and planetary orbits, respectively. The range of inferior and superior P-type orbits in the HZ is between 0.657-0.71 AU and 0.95-1.02 AU, respectively.

引用

页数：5

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