A Multicolor Photometric and Fourier Study of New Field RR Lyrae Variables (Abstract)

Volume 36 number 1 (2008)

Michael Koppelman

Richard Huziak

Walter Cooney

Vance Petriew

Abstract

(Abstract only) We present precision, multicolor light curves, new or updated ephemerides and Fourier components for four new or recently discovered RR Lyrae stars. We utilize [Fe/H] – φ – P relations to determine the metallicity, with separate relations for the RRab and RRc stars. Where possible we use a second method for determining [Fe/H] such as the amplitude in the Johnson B bandpass (A_B). The metallicities are then used to calculate a second-order determination of the absolute magnitude (M_V) and hence the distance (D).