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Bio-habitability and life on planets of M-G-type stars

Published online by Cambridge University Press:  13 January 2020

Amri Wandel
Amri Wandel*
Affiliation:
Racah Institute of Physics, The Hebrew University of JerusalemJerusalem 91904, Israel email: amri@huji.ac.il
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Abstract

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The recent detection of Earth-sized planets in the habitable zone of Proxima Centauri, Trappist-1, and many other nearby M-type stars (which consist some 75% of the stars) has led to speculations, whether liquid water and life actually exist on these planets. Defining the bio-habitable zone, where liquid water and complex organic molecules can survive on at least part of the planetary surface, we suggest that planets orbiting M-type stars may have life-supporting conditions for a wide range of atmospheric properties (Wandel2018). We extend this analysis to synchronously orbiting planets of K- and G-type stars and discuss the implications for the evolution and sustaining of life on planets of M- to G-type stars, in analogy to Earth.

Keywords

Habitable ZoneexoplanetsM-type starsclimate mode
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S345: Origins: From the Protosun to the First Steps of Life , August 2018 , pp. 189 - 193
Copyright
© International Astronomical Union 2020 

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