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Molecular Superclouds in M51

Published online by Cambridge University Press:  12 April 2016

T. Tosaki ,
R. Kawabe  and
Y. Taniguchi
T. Tosaki
Affiliation:
Astronomical Institute, Tohoku University
R. Kawabe
Affiliation:
Nobeyama Radio Observatory
Y. Taniguchi
Affiliation:
Astronomical Institute, Tohoku University

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Recently, it has been shown that some of nearby spiral galaxies have very massive (107-8Mʘ) and large (several 100 pc - ~ 1 kpc) molecular gas clouds (M51: Rand & Kulkarni 1990; NGC1068: Planesas et al. 1991). Since these clouds are significantly more massive and larger than those of so-called Giant Molecular Clouds (GMCs) found in our Galaxy, they are called Molecular Super-clouds (Rand & Kulkarni 1990; hereafter MSCs). In order to study observational properties of MSCs, we present the results of high-resolution (4”) 12CO(J=1-0) mosaic mapping of central 2.’5 region of the Sbc galaxy M51 using the Nobeyama Millimeter Array (NMA). Our main results are summarized in the followings (Tosaki, Kawabe & Taniguchi 1992).

Type
3. Astronomical Results and Prospects
Information
International Astronomical Union Colloquium , Volume 140: Astronomy with Millimeter and Submillimeter Wave Interferometry , 1994 , pp. 353 - 354
Copyright
Copyright © Astronomical Society of the Pacific 1994

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