Silicon isotopic abundance toward evolved stars and its application for presolar grains⋆⋆

Author: Peng T.-C.   Humphreys E. M. L.   Testi L.   Baudry A.   Wittkowski M.   Rawlings M. G.   de Gregorio-Monsalvo I.   Vlemmings W.   Nyman L.-A.   Gray M. D.   de Breuck C.  

Publisher: Edp Sciences

E-ISSN: 1432-0746|559|issue|L8-L8

ISSN: 0004-6361

Source: Astronomy & Astrophysics, Vol.559, Iss.issue, 2013-11, pp. : L8-L8

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Abstract

Aims. Galactic chemical evolution (GCE) is important for understanding the composition of the present-day interstellar medium (ISM) and of our solar system. In this paper, we aim to track the GCE by using the 29Si/30Si ratios in evolved stars and tentatively relate this to presolar grain composition.