Other
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aj....104..734b&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 104, no. 2, Aug. 1992, p. 734-747. Research supported by NSF.
Other
70
Interstellar Extinction, Light Curve, Variable Stars, Line Spectra, Stellar Color, Stellar Oscillations
Scientific paper
The paper modifies Sturch's (1966) method for deriving, from observed near-minimum light colors, EB-V values for RR Lyrae stars with Bailey's types for a or b light curves in order to avoid the use of reddening and metallicity-sensitive U-B colors. The Delta(S), (Fe/H) calibration is examined, and blanketing corrections are derived from synthetic colors of models by Kurucz (1975, 1979). Sturch's finding that the intrinsic blanketing-corrected near-minimum light B-V color of a variable can be estimated from its period is verified. The inherent accuracy of the method is discussed and found to depend appreciably on cycle-to-cycle color variations. Comparisons are made with other reddening determinations. The blanketing corrections determined by Sturch from delta(U-B) values are found to make his EB-V values less than those found in the present study, while his estimated intrinsic colors make his EB-V values greater than those found in this study.
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