Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26as..144..203h&link_type=abstract
Astronomy and Astrophysics Supplement, v.144, p.203-209
Astronomy and Astrophysics
Astrophysics
20
Stars: Abundances, Chemically Peculiar
Scientific paper
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. Based on observations collected at the Observatoire de Haute-Provence (France), and on data from the ESA\protect\linebreak HIPPARCOS astrometry satellite.
No associations
LandOfFree
Metal abundances of field A and Am stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Metal abundances of field A and Am stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metal abundances of field A and Am stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1387264