Other
Scientific paper
Mar 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979aj.....84..383l&link_type=abstract
Astronomical Journal, vol. 84, Mar. 1979, p. 383-400.
Other
49
Interstellar Extinction, Lyra Constellation, Red Shift, Stellar Spectrophotometry, Variable Stars, Light Curve, Ubv Spectra
Scientific paper
Based on complete light curves in the five channels of the Walraven VBLUW photometric system, a discussion is given of the determination of blanketing and reddening for RR Lyrae stars. A photometric accuracy of the order of 0.005 mag has been reached. Blanketing derived from the reddening-free color index /B-L/ is shown to be equivalent to other ways of determining the metallicity of RR Lyrae stars, such as delta (u-B)s, m1, and delta S. Two independent ways to find the interstellar-reddening correction are studied; they lead to identical results. A table is given with high-accuracy blanketing and reddening values for 73 RRab, 13 RRc, and a few short-period (RRs) variables. The relation between the present observations and those in other intermediate-band systems is considered.
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