Journal
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES
Volume 144, Issue 2, Pages 203-209Publisher
E D P SCIENCES
DOI: 10.1051/aas:2000207
Keywords
stars : abundances; chemically peculiar
Categories
Ask authors/readers for more resources
Detailed abundances of 9 field A and Am stars are derived for Mg, Ca, Sc, Cr, Fe, and Ni using high resolution spectroscopy. Most of our sample Am stars show the characteristic deficiencies of Ca and Sc on one hand, and the overabundances of the iron peak elements on the other, which is consistent with the predictions of the diffusion model for Main Sequence or slightly evolved stars. There seems to be a correlation between abundances of Ca and Sc and the effective temperature for stars of similar age: the abundance of Ca increases with increasing mass whereas that of Sc decreases. Two Of our Am stars have a different abundance pattern: Ca is overabundant in the hot magnetic Am star o Peg and its abundance is nearly normal in the metallic giant star rho Pup. The other objects of our sample have globally a solar composition except 28 And, which shows significant deficiencies for most the studied elements.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available