Catalog of stars in Sgr dwarf galaxy

We measure the spatial density of F turnoff stars in the Sagittarius dwarf tidal stream, from Sloan Digital Sky Survey data, using statistical photometric parallax. We find a...我们基于斯隆数字巡天（Sloan Digital Sky Survey）的观测数据，采用统计测光视差（statistical photometric parallax）方法，测量了人马座矮星系潮汐尾（Sagittarius dwarf tidal stream）内F型主序转向星（F turnoff stars）的空间密度。我们发现……