Dwarf irregular galaxy Leo A. II. R and Ha obs.
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We have surveyed the complete extent of Leo A, which is an apparently isolated Local Group dwarf irregular galaxy, in B, V, R, I (the Johnson-Cousins system), and NA656...
我们已针对明显孤立的本星系群矮不规则星系狮子座A（Leo A）的完整天区范围开展巡天观测，所用波段涵盖约翰逊-考辛斯（Johnson-Cousins）系统的B、V、R、I波段以及NA656波段……
