Abstract

PENA, J. H. et al. uvby - β photometry of the RR Lyrae star AC And. Rev. mex. astron. astrofis [online]. 2005, vol.41, n.2, pp.461-484. ISSN 0185-1101.

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 logT_e, as well as the metallicity [Fe/H]. The determination of M_v is also discussed and, in view of the results, we propose that AC And is an RR Lyrae star with possible anomalous chemical composition.

Keywords : Stars [Variables]; Stars [Delta scuti]; Stars [Variables]; Stars [RR Lyrae]; Techniques [Photometric].