Spatial segregation impact on star formation in nearby dwarf spheroidal galaxies
Monthly Notices of the Royal Astronomical Society（2021）
摘要
Using our Hubble Space Telescope/Advanced Camera for Surveys (HST/ACS) observations of the recently found isolated dwarf spheroidal (dSph) galaxies, we homogeneously measured their star formation histories (SFHs). We determined SF rate as a function of time, as well as age and metallicity of the stellar populations. All objects demonstrate complex SFH, with a significant portion of stars formed 10...
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关键词
galaxies: dwarf,galaxies: evolution,Local Group,galaxies: stellar content
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