VR light curves of 15 RR Lyrae in NGC 4147

We report the results of CCD V and R photometry of the RR Lyrae stars known in NGC 4147. The periodicities of most variables are revised and new ephemerides are calculated. The...

本文报道了NGC 4147中已知天琴座RR型变星（RR Lyrae stars）的电荷耦合器件（Charge-Coupled Device, CCD）V波段与R波段测光结果。修订了多数变星的光变周期，并计算得到了新的星历表。