First Detection of 492 GHz [C I] Emission from the Large Magellanic Cloud

The 3 P1 3 3 P0 fine-structure transition of neutral atomic carbon [C I] was observed with the Antarctic Submillimeter Telescope and Remote Observatory (ASTyRO) toward two star-forming regions in the Large Magellanic Cloud: N159 and 30 Doradus. The [C I] line is weak in the vicinity of 30 Dor, a region with a uniquely hard and intense UV field. The I[C I]yICO ratio in N159 is enhanced by a factor?2 compared to the Milky Way Galaxy, a result attributable to the lower metallicity of the Large Magellanic Cloud. Subject headings: galaxies: ISM—ISM: atoms—ISM: individual (N159, 30 Doradus)—Magellanic Clouds— radio lines: ISM

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