期刊
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
卷 53, 期 6, 页码 L41-L44出版社
OXFORD UNIV PRESS
DOI: 10.1093/pasj/53.6.L41
关键词
galaxies : ISM; galaxies : Magellanic Clouds; galaxies : structure; ISM : clouds; radio lines : ISM; stars : formation
Based on a now sensitive survey of the giant molecular clouds (GMCs) in the Large Magellanic Cloud, we derived the mass spectrum for them. In the mass range from similar to 8 x 104 MD to 3 x 106 MD, a power law with an index value of - 1.9 +/- 0.1 shows the best fit to the data. This is consistent with numerical simulations that explain both the HI and CO clumpy distributions by Wada et al. (2000; ApJ, 540, 797), but is significantly steeper than that of the GMCs in the Galaxy. This may be consistent with the drastic dissipation of the GMCs in the LMC due to higher UV radiation fields than in the Galaxy.
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