The absolute magnitudes of RR Lyrae stars - III. DH Peg.
Jameson, R. F.; Fernley, J. A.; Skillen, I.; Longmore, A. J.
United Kingdom
Abstract
UV optical and IR photometry of the RRc Lyrae star DH Peg is presented. Using this photometry plus previously published data the IR Flux Method of Blackwell & Shallis (1977) is applied to estimate effective temperatures and angular diameters at all phases of the pulsation cycle. The angular diameters are then matched with the integrated radial-velocity curve to give the radius and distance of the star. Mean values Te = 7070 + or - 210, r = 4.40 + or - 0.90 solar radii and Mv = 0.62 + or - 0.40 mag are found.