Globulars in M31

We present deep (V=~27) V- and I-band stellar photometry of G302 and G312, two globular star clusters in the halo of M31. These data were obtained using the Hubble Space...本研究呈现了M31晕中两个球状星团（globular star clusters）G302与G312的深场V波段（V-band）及I波段（I-band）恒星测光（stellar photometry）数据，其V波段测光极限星等约为27等。该批观测数据由哈勃空间（Hubble Space）...获取。