THE ABSOLUTE MAGNITUDES OF RR LYRAE STARS .5. WY ANTLIAE, W CRATERIS,RV OCTANTIS AND BB PUPPIS

We present infrared (JHK) light curves and radial velocity curves for four southern hemisphere RRab Lyraes (WY Ant, W Crt, RV Oct and BB Pup ) and an infrared light curve for one RRc Lyrae (AU Vir). Absolute mag nitudes are determined for the RRab stars, using a combination of the infrared flux method and the Baade-Wesselink method. Including these f our stars, there are now 29 RR Lyraes that have been analysed, using t hese, or similar, methods. The best-fitting lines to these stars are [ M(V)]= 0.21(+/- 0.05)[Fe/H]+ 1.04(+/- 0.10) and [M(K)]= - 2.95(+/- 0.1 0) log P - 1.07(+/- 0.10), where the quoted errors are, we believe, re alistic rather than formal or internal.