Circumstellar SiC grains of type Z - Evidence for extensive He shell dredge-up in low-metallicity low-mass AGB stars

Details Circumstellar SiC grains of type Z - Evidence for extensive He shell dredge-up in low-metallicity low-mass AGB stars Circumstellar SiC grains of type Z - Evidence for extensive He shell dredge-up in low-metallicity low-mass AGB stars

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28..599h&link_type=abstract

Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. 599.

Physics

4

Stellar Envelopes, Silicon Carbides, Metallicity, A Stars, Stellar Mass, G Stars, B Stars

Scientific paper

The Z grains, a rare class of circumstellar SiC grains, appear to have
formed in the stellar winds of low-metallicity, low-mass AGB stars that
experienced extensive dredge-up of He shell matter. Measurements of the
abundances of such heavy elements as Ba, Nd, and Sm in single SiC Z
grains will help to further constrain the Z-grain parent stars.

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