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Catalogue of 12CO(J = 1--0) and 13CO(J = 1--0) Molecular Clouds in the Carina Flare Supershell

Citation

Dawson, JR and Kawamura, A and Mizuno, N and Onishi, T and Fukui, Y, Catalogue of 12CO(J = 1--0) and 13CO(J = 1--0) Molecular Clouds in the Carina Flare Supershell, Astronomical Society of Japan. Publications, 60, (6) pp. 1297-1315. ISSN 0004-6264 (2008) [Refereed Article]


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Copyright Statement

Copyright 2008 Astronomical Society of Japan

Official URL: http://pasj.asj.or.jp/v60/v60n6.html

DOI: doi:10.1093/pasj/60.6.1297

Abstract

We present a catalogue of $^{12}$CO($J=$ 1-0) and $^{13}$CO($J=$ 1-0) molecular clouds in the spatio-velocity range of the Carina Flare supershell, GSH287$+$04$-$17. The data cover a region of $\sim$66 square degrees and were taken with the NANTEN 4m telescope, at spatial and velocity resolutions of $\sim$2.6' and 0.1kms$^{-1}$. Decomposition of the emission results in the identification of 156 $^{12}$CO clouds and 60 $^{13}$CO clouds, for which we provide observational and physical parameters. Previous work suggests the majority of the detected mass forms part of a comoving molecular cloud complex that is physically associated with the expanding shell. The cloud internal velocity dispersions, degree of virialization and size-linewidth relations are found to be consistent with those of other Galactic samples. However, the vertical distribution is heavily skewed towards high-altitudes. The robust association of high-$z$ molecular clouds with a known supershell provides some observational backing for the theory that expanding shells contribute to the support of a high-altitude molecular layer.

Item Details

Item Type:Refereed Article
Keywords:Catalogs -- ISM: bubbles -- ISM: clouds -- ISM: molecules
Research Division:Physical Sciences
Research Group:Astronomical and Space Sciences
Research Field:Galactic Astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Physical Sciences
Author:Dawson, JR (Dr Joanne Dawson)
ID Code:75005
Year Published:2008
Web of Science® Times Cited:11
Deposited By:Mathematics and Physics
Deposited On:2011-12-23
Last Modified:2012-06-28
Downloads:0

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