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Discovering periodic sublimation on main-belt primitive asteroids near perihelion and its possible astrobiological significance

Published online by Cambridge University Press:  13 January 2020

Vladimir V. Busarev
Vladimir V. Busarev*
Affiliation:
Moscow Lomonosov State University, Sternberg Astronomical Institute, 13 Universitetskij prospect, Moscow 119992, Russian Federation email: busarev@sai.msu.ru
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Abstract

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Discovered periodic sublimation activity on four main-belt primitive asteroids led us to conclusions about possible origin of those and similar bodies (or their parent bodies) near or beyond the snow line in the early Solar System making incorporated in them a considerable water ice stock. Water differentiation of the bodies owing to 26A1 decay and their internal thermal evolution might have created conditions for water soluble organics and prebiotic compounds formation. Subsequent longtime periodic changing temperature and other physico-chemical parameters (due to spinning and moving around the Sun) in the near-surface layers of primitive asteroids have led probably to formation of more complex organic compounds of astrobiological significance.

Keywords

asteroidsspectroscopic methodssublimation of icesactivity of the Sunsolar windastrobiology
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. 388 - 389
Copyright
© International Astronomical Union 2020 

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