期刊
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
卷 53, 期 6, 页码 L45-L49出版社
OXFORD UNIV PRESS
DOI: 10.1093/pasj/53.6.L45
关键词
galaxies : Magellanic Clouds; ISM : clouds; radio lines : ISM; stars : formation
We present the first results from a new (CO)-C-12 (J = 1-0) survey of the Small Magellanic Cloud (SMC) with the NANTEN millimeter-wave telescope. The survey covered the northeast and southwest regions of the main Bar, and the H 11 regions N 84, N 88 in the Wing at a linear resolution of similar to 50pe. Twenty-one giant molecular clouds (GMCs), whose masses are similar to 10(4)-10(6) M-., were identified. Significant CO emission, T-R* similar to 0.36K, was first detected toward the N 84 region in the Wing, which is comparable to those of the prominent CO clouds associated with infrared sources LIRS 36, LIRS 49 in the Bar. The GMCs exhibit a good spatial correlation with the H 11 regions and young clusters, indicating that cluster formation is on-going in these GMCs. On the other hand, they show little correlation with older clusters or with supernova remnants, suggesting rapid dissipation of CO.
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