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.
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页数：5
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