Leo I VI photometry

We present V and I photometry of a 9.4'x9.4' field centered on the dwarf spheroidal galaxy Leo I. The I magnitude of the tip of the Red Giant Branch is robustly estimated from...我们呈现了以矮球状星系狮子座I（Leo I）为中心的9.4′×9.4′视场的V波段与I波段测光数据。红巨星分支顶端的I星等可从……中得到稳健估算。