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The four HII regions in the Sgr A East complex: A, B, C, and D, represent evidence of recent massive star formation in the central ten parsecs. Using Paschen-alpha images taken with HST and 8.4 GHz VL...
Hii regions in ngc 5055. ii. physical properties。
From Ultracompact to Extended HII Regions:Cloud Gravity and Stellar Motion
HII Regions Cloud Gravity Stellar Motion
2009/6/16
From Ultracompact to Extended HII Regions:Cloud Gravity and Stellar Motion。