Abundance distribution of A-F giant stars

Details Abundance distribution of A-F giant stars Abundance distribution of A-F giant stars

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...251..171b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 251, no. 1, Nov. 1991, p. 171-182. Research supported by SNSF.

Astronomy and Astrophysics

Astrophysics

14

A Stars, Abundance, F Stars, Giant Stars, Spatial Distribution, Stellar Composition, Stellar Atmospheres, Stellar Evolution, Stellar Spectrophotometry

Scientific paper

The detailed spectroscopic analysis of A-F giant stars is presented which show photometric characteristics of the classical Am stars. The results of the three newly studied stars (HR 6492, HR 8222, and HR 8392) reveal that these stars exhibit the same behavior as the previous ones, with abundance distributions similar to those of delta Delphini stars. It is pointed out that in HR 8222 the distribution abundance of rare earth and associated elements follows without ambiguity the odd-even effect. A general enhancement by a factor of about four with respect to the solar abundance pattern is observed.

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