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

journal contribution
posted on 2023-05-17, 09:44 authored by Joanne Dawson, Kawamura, A, Mizuno, N, Onishi, T, Fukui, Y
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.

History

Publication title

Astronomical Society of Japan. Publications

Volume

60

Issue

6

Pagination

1297-1315

ISSN

0004-6264

Department/School

School of Natural Sciences

Publisher

Astronomical Soc Japan

Place of publication

C/O National Astronomical Observatory, Mitaka, Tokyo, Japan, 181

Rights statement

Copyright 2008 Astronomical Society of Japan

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the physical sciences

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