An abundance analysis of the cool barium stars

Details An abundance analysis of the cool barium stars An abundance analysis of the cool barium stars

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...132..326s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 132, no. 2, March 1984, p. 326-338.

Astronomy and Astrophysics

Astrophysics

81

Abundance, Barium, Metallic Stars, Stellar Atmospheres, Stellar Spectra, Carbon, Chemical Composition, Giant Stars, Infrared Spectra, K Stars, Lithium, Neutron Cross Sections, Nitrogen, Oxygen

Scientific paper

High dispersion Coudeand IR spectra for seven Ba stars have been used in an analysis relying on published model atmospheres to determine iron-peak elemental abundances, heavy element s- and r-process abundances, and C, N, and O abundances. For three of the stars, C-12/C-13 ratios are also determined. The stars considered exhibit enhanced N abundances, slight depletions of O, and approximately solar C abundances. These results are suggested to follow from the contamination of a normal K-giant atmosphere by additional C, mainly in the form of C-12.

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