(RI)c photometry of variables in M31

We present Cousins R and I band photometry of variable stars in a ~13'x13' region in the disk of M31 galaxy, obtained during 141 nights. Of the 26 Cepheid variables present in...我们报道了在141个观测夜期间获取的、位于M31星系盘内约13角分×13角分天区中的变星的考辛斯（Cousins）R与I波段测光数据。在本天区已发现的26颗造父变星中……