Mathematics – Probability
Scientific paper
Jun 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994pasp..106..600t&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 106, no. 700, p. 600-610
Mathematics
Probability
26
Abundance, Cool Stars, Dwarf Stars, Hydrogen, Iron, Star Clusters, Anomalies, Binary Stars, Data Processing, Giant Stars, Metallicity, Probability Distribution Functions, Stellar Color
Scientific paper
For Hyades and Coma dwarfs, the average value of (Fe/H) is found to be 0.107 +/- 0.010 and -0.073 +/- 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 metallicity difference is allowed for, no B-V anomaly emerges.
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