A Metallicity Calibration Using hk/(b-y) Photometry for the Warmer Phases of RR LYR Stars

Details A Metallicity Calibration Using hk/(b-y) Photometry for the Warmer Phases of RR LYR Stars A Metallicity Calibration Using hk/(b-y) Photometry for the Warmer Phases of RR LYR Stars

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...18510102b&link_type=abstract

American Astronomical Society, 185th AAS Meeting, #101.02; Bulletin of the American Astronomical Society, Vol. 26, p.1482

Astronomy and Astrophysics

Astronomy

1

Scientific paper

The byCa filter system was used to obtain hk and b-y colors for a dozen RR Lyr stars at various phases, where hk = (Ca - b) - (b - y). When the data are plotted in an hk/(b-y) color-magnitude diagram there is a clear stratification of the data points by metallicity, with the lower metallicity stars having a lower value of hk. In the color range 0.10

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