MU Leonis - The Branch-Bonnell-Tomkin metallicity revised

Details MU Leonis - The Branch-Bonnell-Tomkin metallicity revised MU Leonis - The Branch-Bonnell-Tomkin metallicity revised

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pasp..103..969t&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 103, Sept. 1991, p. 969-972.

Astronomy and Astrophysics

Astronomy

4

Giant Stars, K Stars, Metallicity, Stellar Composition, Abundance, Metallic Stars

Scientific paper

Recently, Taylor (1982) has established an (Fe/H) zero point for K giants. Taylor's work permits a reassessment of the well-known Mu Leo metallicity of Branch, Bonnell and Tomkin (BBT), (1978). Correction to the new zero point lowers the BBT result from +0.48 +0.35 dex, with the correction being significant at about 97-percent confidence. It is also possible to set an upper limit on the standard deviation of the uncorrected BBT datum. This limit turns out to be 0.17 dex at 95-percent confidence. Given these results, the corrected datum yields a lower limit at 95-percent confidence which may be as small as (Fe/H) = 0.12 dex. The BBT result is therefore not decisive evidence for supermetallicity in K giants.

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