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The Faint Young Sun and Faint Young Stars Paradox

Published online by Cambridge University Press:  12 September 2017

Petrus C. Martens
Petrus C. Martens*
Affiliation:
Department of Physics & Astronomy, Georgia State University, 25 Park Place, 6th Floor, Atlanta, GA 30303, USA email: martens@astro.gsu.edu
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Abstract

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The purpose of this paper is to explore a resolution for the Faint Young Sun Paradox that has been mostly rejected by the community, namely the possibility of a somewhat more massive young Sun with a large mass loss rate sustained for two to three billion years. This would make the young Sun bright enough to keep both the terrestrial and Martian oceans from freezing, and thus resolve the paradox. It is found that a large and sustained mass loss is consistent with the well observed spin-down rate of Sun-like stars, and indeed may be required for it. It is concluded that a more massive young Sun must be considered a plausible hypothesis.

Keywords

Stars: late-typestars: rotationstars: mass lossstars: evolutionsolar wind
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S328: Living Around Active Stars , October 2016 , pp. 350 - 355
Copyright
Copyright © International Astronomical Union 2017 

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