The deuterium fractionation of water on solar-system scales in deeply-embedded low-mass protostars⋆

Author： Persson M. V.   Jørgensen J. K.   van Dishoeck E. F.   Harsono D.  

Publisher： Edp Sciences

E-ISSN： 1432-0746|563|issue|A74-A74

ISSN： 0004-6361

Source： Astronomy & Astrophysics, Vol.563, Iss.issue, 2014-03, pp. : A74-A74

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Abstract

Context. The chemical evolution of water through the star formation process directly affects the initial conditions of planet formation. The water deuterium fractionation (HDO/H2O abundance ratio) has traditionally been used to infer the amount of water brought to Earth by comets. Measuring this ratio in deeply-embedded low-mass protostars makes it possible to probe the critical stage when water is transported from clouds to disks in which icy bodies are formed.

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