Variables in the Sagittarius dSph

We present time-series CCD photometry of a field in the newly discovered dwarf spheroidal galaxy in Sagittarius (hereafter Sgr), and of a nearby control field. These data, which...本文提供了新近发现的位于人马座（Sagittarius，后文简称Sgr）的矮球状星系（dwarf spheroidal galaxy）内部一块观测天区，以及邻近对照天区的时序CCD测光（time-series CCD photometry）数据。该数据集……