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¹²CO and ¹³CO observation of the low-metallicity dwarf galaxy DDO 154

Komugi, Shinya; Inaba, Miku; Shindou, Tetsuo

The conversion factor from carbon monoxide (CO) intensity to molecular gas mass is a source of large uncertainty in understanding gas and its relation to star formation in galaxies. In particular, the conversion factor in low-metallicity environments have remained elusive, as currently only two galaxies have been detected in any CO isotopes in env…