Silicon isotopic abundances in pulsating SiO maser stars

Details Silicon isotopic abundances in pulsating SiO maser stars Silicon isotopic abundances in pulsating SiO maser stars

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003assl..283..323j&link_type=abstract

In: Mass-losing pulsating stars and their circumstellar matter. Workshop, May 13-16, 2002, Sendai, Japan, edited by Y. Nakada, M

Astronomy and Astrophysics

Astrophysics

1

Maser, Abundance

Scientific paper

The abundances of 28Si and 29Si in pulsating SiO maser stars are calculated by fitting the SiO maser emissivity from the model to the observed integrated SiO maser intensity. For the first example star R Cas, the abundances of 28Si and 29Si are 1.0e-4 and 3.4e-6 respectively, which corresponds to a ratio of 29, higher than the terrestrial. The calculation to another Mira variable NV Aur draws the ratio of 32, similar tendency as R Cas.

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