Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26as..113..333m&link_type=abstract
Astronomy and Astrophysics Supplement, v.113, p.333
Astronomy and Astrophysics
Astrophysics
5
Stars: Abundances, Stars: Atmospheres, Stars: Evolution, Stars: Giants
Scientific paper
We derived the atmospheric parameters and chemical composition of five stars with positive CN-index from high dispersion coude echelle spectra obtained using the 1-m telescope of the Special Observatory of the Russian Academy of Sciences, equipped with a CCD detector. We found that HD 176411, HD 181984, HD 190940, and HD 207130 are normal giants in the post first dredge-up phase; HD 222404 (γ Cep) is possibly an unmixed star. HD 181984 (τ Dra), a suspected super-metal-rich star, has a metallicity of [Fe/H]=+0.10dex. It shows underabundances of C and O, and overabundances of Na, Al, Mn. HD 176411, HD 190940, and HD 207130 show nearly solar metallicity, underabundances of C and O, and overabundances of Na and Al. The derived abundances of O, Na (and Al) might be an evidence for anomalous mixing in these stars. HD 222404 has a nearly solar chemical composition. The program stars have on average solar abundances for Y, Zr, Ba, La, Ce, Pr, and Nd, within the errors of determination.
Kutsenko S. V.
Mishenina Tamara V.
Musaev F. A.
No associations
LandOfFree
Chemical composition of five giants with positive CN-indices. 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 Chemical composition of five giants with positive CN-indices., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chemical composition of five giants with positive CN-indices. will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1351565