Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...294..536h&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 294, no. 2, p. 536-546
Astronomy and Astrophysics
Astrophysics
43
A Stars, Abundance, Peculiar Stars, Spectrum Analysis, Stellar Composition, Interstellar Matter, Main Sequence Stars
Scientific paper
The results of an abundance analysis of 15 early A-type stars are presented here. These stars have u sin i on the range 6 to 109 km/s and all but one of them (an Am star) are classified as normal. Reliable abundances (uncertainties about a quarter dex or less) are obtained for twelve elements. Considerable star-to-star abundance variations are present among both the narrow lined and broader lined stars. Most elements have abundances which scale with those of iron. Carbon and calcium are interesting exceptions. Carbon abundances seem to be anti-correlated with those of iron, while calcium abundances may exhibit a more complex behavior. Heavy elements seem enhanced for most stars.
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