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

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Fig. 2

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Comparison of ²⁹Si/³⁰Si in evolved stars. The dashed line indicates the terrestrial and solar ²⁹Si/³⁰Si abundance ratio of 1.51 (de Bièvre et al. 1984; Anders & Grevesse 1989; Asplund et al. 2009). The red line is a linear fit to the ²⁹Si/³⁰Si–Ṁ relation.

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