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arXiv · 1906.07704

On the Habitability of Teegarden's Star planets

Amri Wandel·Lev Tal-Or
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Abstract

We study the habitability of the two 1-2 Earth-mass planets, recently detected by the CARMENES collaboration, around the ultra-cool nearby M dwarf Teegarden's Star. With orbital periods of 4.9 and 11.4 days, both planets are likely to be within the Habitable Zone and tidally locked. They are among the most Earth-like exoplanets yet discovered. Applying an analytical habitability model we find that surface liquid water could be present on both planets for a wide range of atmospheric properties, which makes them attractive targets for bio-signature searches. The prospects of the planets retaining such an atmosphere over their history are discussed.

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Amri Wandel, Lev Tal-Or. 2019-06-18. On the Habitability of Teegarden's Star planets. https://doi.org/10.3847/2041-8213%2Fab2df7

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