Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aj....106..703s&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 106, no. 2, p. 703-718.
Astronomy and Astrophysics
Astronomy
154
Metallicity, Stellar Luminosity, Stellar Magnitude, Stellar Mass, Stellar Temperature, Variable Stars, Stellar Color, Stellar Spectrophotometry
Scientific paper
The calibration of the absolute magnitudes of average field RR Lyrae stars from the pulsation equation is sought by finding the relations between metallicity, period, and mass along the blue fundamental edge (BFE) on the basis of various types of observational data. It is shown in S93I that the Oosterhoff-Arp-Preston correlation of period and metallicity at the BFE is steep at -0.122 +/- 0.02. The determination is independent of reddening and of light curve amplitude. The (B-V) exp 0mag color of the bluest field RR Lyrae in the field star sample of Blanco (1992) is independent of metallicity over the range of (Fe/H) from 0 to -2.1.
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