Analysis of Atmospheric Abundances in Classical Barium Stars

Details Analysis of Atmospheric Abundances in Classical Barium Stars Analysis of Atmospheric Abundances in Classical Barium Stars

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004arep...48..597a&link_type=abstract

Astronomy Reports, vol. 48, Issue 7, p.597-610

Astronomy and Astrophysics

Astronomy

5

Scientific paper

We present our analysis of elemental abundances in the atmospheres of 16 classical barium stars derived from high-resolution spectra and model atmospheres. Comparison of the results with analogous data for moderate barium stars and normal red giants shows that the abundance patterns for elements before the iron peak are the same for all three groups of red giants, testifying to a similar origin. For binary systems, we confirm the influence of the orbital period and, hence, the component separation, on the overabundance of s-process elements. The amount of enrichment in s-process elements is also influenced by mass, metallicity, and evolutionary phase. Any of these parameters can be important in individual objects.

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