Pristine Inner Galaxy Survey (PIGS). XI,

The Sagittarius dwarf spheroidal galaxy (Sgr dSph) is a satellite orbiting the Milky Way that has experienced multiple stripping events due to tidal interactions with our...人马座矮球状星系（Sagittarius dwarf spheroidal galaxy, Sgr dSph）是环绕银河系运行的伴星系，曾因与银河系的潮汐相互作用而经历多次物质剥离事件。