Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003apj...587..384v&link_type=abstract
The Astrophysical Journal, Volume 587, Issue 1, pp. 384-389.
Astronomy and Astrophysics
Astronomy
2
Stars: Abundances, Stars: Agb And Post-Agb, Stars: Evolution
Scientific paper
We present abundances of Ti, Fe, and Ni as well as 10 post-iron-peak elements in the extrinsic, Galactic S star HD 35155. This star is of interest because it shows many characteristics of symbiotic stars and displays the same pattern of abundance enhancements observed in yellow symbiotic stars. It is clear that HD 35155 is associated with the symbiotic stars and provides an important link between the symbiotic phenomena and chemically peculiar stars. In addition, the abundance ratio of heavy to light s-process elements correlates with the metallicity of HD 35155, as is expected if the 13C neutron source drives the s-process. Our models predict that the abundance of lead should be enhanced by a factor of between 50 to 500 in HD 35155.
Gallino Roberto
Masera Stefano
Vanture Andrew D.
Wallerstein George
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