Analyses of Archival Data for Cool Dwarfs. IV. [Fe/H] and Related Properties for the Hyades and Coma
Abstract
For Hyades and Coma dwarfs, [Fe/H] is found to be 0.107 +- 0.020 dex, respectively. At the 0.047-dex level, there is no sign of an [Fe/H] offset across the Hyades Li chasm. At the 0.064-dex level, there is no sign of a difference between [Fe/H] for the Hyades dwarfs and giants. At low resolution, the D strong-feature index of Taylor and Johnson (1987) is anomalously weak in the Hyades relative to field stars at 98% confidence or better. This result is from an analysis which excludes log g effects and allows for the effects of binaries. A similar analysis for B-V reveals no definite evidence of an anomaly in this index. In addition, if the Coma dwarfs are compared to their Hyades counterparts and the Coma-Hyades metallicty difference is allowed for, no B-V anomaly emerges. (SECTION: Stars)
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- June 1994
- DOI:
- 10.1086/133419
- Bibcode:
- 1994PASP..106..600T
- Keywords:
-
- Abundance;
- Cool Stars;
- Dwarf Stars;
- Hydrogen;
- Iron;
- Star Clusters;
- Anomalies;
- Binary Stars;
- Data Processing;
- Giant Stars;
- Metallicity;
- Probability Distribution Functions;
- Stellar Color;
- Astrophysics;
- STARS: LATE-TYPE;
- STARS: ABUNDANCES