KP Cyg: An Unusual Metal-Rich RR Lyr Type Star of Long Period
KP Cyg: An Unusual Metal-Rich RR Lyr Type Star of Long Period
We present the results of a detailed spectroscopic study of the long period ($P=0.856$ days) RR Lyrae star, KP Cyg. We derived abundances of many chemical elements including the light species, iron-group elements and elements of the s-processes. Most RR Lyrae stars with periods longer than 0.7 days are metal-deficient …