uvby-β Photometry of the RR Lyrae Star AC And
Abstract
Strömgren uvby-β and differential V photoelectric photometry of the variable star AC And is presented. Analysis of this data, as well as data from the literature, corroborates the periods proposed by Fitch & Szeidl (1976). Strömgren photometry has been used for the determination of the reddening and the physical parameters log g and log Te, as well as the metallicity [Fe/H]. The determination of Mv is also discussed and, in view of the results, we propose that AC And is an RR Lyrae star with possible anomalous chemical composition.
- Publication:
-
Revista Mexicana de Astronomia y Astrofisica
- Pub Date:
- October 2005
- Bibcode:
- 2005RMxAA..41..461P
- Keywords:
-
- Stars: Variables: Delta Scuti;
- Stars: Variables: RR Lyrae;
- Techniques: Photometric