Reddening and blanketing of RR Lyrae stars.
Abstract
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.
- Publication:
-
The Astronomical Journal
- Pub Date:
- March 1979
- DOI:
- 10.1086/112433
- Bibcode:
- 1979AJ.....84..383L
- Keywords:
-
- Interstellar Extinction;
- Lyra Constellation;
- Red Shift;
- Stellar Spectrophotometry;
- Variable Stars;
- Light Curve;
- Ubv Spectra;
- Astrophysics;
- Interstellar Reddening:RR Lyrae Stars;
- Line Blanketing:RR Lyrae Stars;
- RR Lyrae Stars:Walraven Photometry