First detection of 492 GHz [C I] emission from the large magellanic cloud

被引:21
作者
Stark, AA
Bolatto, AD
Chamberlin, RA
Lane, AP
Bania, TM
Jackson, JM
Lo, KY
机构
[1] BOSTON UNIV, DEPT ASTRON, BOSTON, MA 02215 USA
[2] UNIV REPUBLICA, DEPT ASTRON, MONTEVIDEO, URUGUAY
[3] UNIV ILLINOIS, DEPT ASTRON, URBANA, IL 61801 USA
基金
美国国家科学基金会;
关键词
galaxies; ISM; atoms; individual; (N159; 30; Doradus); Magellanic Clouds; radio lines;
D O I
10.1086/310618
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The P-3(1) --> P-3(0) fine-structure transition of neutral atomic carbon [C I] was observed with the Antarctic Submillimeter Telescope and Remote Observatory (AST/RO) 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]/I-CO ratio in N159 is enhanced by a factor greater than or similar to 2 compared to the Milky Way Galaxy, a result attributable to the lower metallicity of the Large Magellanic Cloud.
引用
收藏
页码:L59 / L62
页数:4
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