The hk,(b-y) Metallicity Calibration for Metal-Poor Red Giants

Details The hk,(b-y) Metallicity Calibration for Metal-Poor Red Giants The hk,(b-y) Metallicity Calibration for Metal-Poor Red Giants

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...192.5413a&link_type=abstract

American Astronomical Society, 192nd AAS Meeting, #54.13; Bulletin of the American Astronomical Society, Vol. 30, p.898

Astronomy and Astrophysics

Astronomy

Scientific paper

We have used uvbyCa photometry for evolved stars of solar metallicity and lower abundance, together with spectroscopic abundance data on a homogeneous merged scale to recalibrate the hk,(b-y) photometric plane. Isometallicity lines have been constructed over the [Fe/H] range from -1.0 to -3.4 from 122 stars. Comparison of Hipparcos distances to our photometric distances, used to establish appropriate reddening corrections, shows good agreement. The dispersion of photometric metallicity estimates is less than 0.17 dex for the more metal-deficient portion of the sample.

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