Abundance anomalies in main sequence A stars. I. Iron and titanium.
Abstract
Iron and titanium abundances were derived for 16 sharp-lined Main Sequence A stars based on high-resolution spectra. Estimates were made of helium abundances and rotational velocities. The iron and titanium anomalies of HR 5959 and Vega were established. The abundances of the other stars are described by a Gaussian distribution with a standard deviation of 0.16 dex and a mean value of 7.58.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- November 1989
- Bibcode:
- 1989A&A...225..125L
- Keywords:
-
- A Stars;
- Abundance;
- Iron;
- Main Sequence Stars;
- Titanium;
- Helium;
- Line Spectra;
- Stellar Atmospheres;
- Stellar Spectra;
- Astrophysics