NGVS VI. Ultra-compact dwarfs in M87
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The origin of ultra-compact dwarfs (UCDs; r_h_>~10pc) --objects larger and more massive than typical globular clusters (GCs), but more compact than typical dwarf galaxies--...
超致密矮星系(ultra-compact dwarfs,UCDs;半光半径$r_h$>约10秒差距)的起源——这类天体的尺度与质量均高于典型球状星团(globular clusters,GCs),但相较于典型矮星系更为致密——……



