Molecular line mapping of the giant molecular cloud associated with RCW 106-III. Multimolecular line mapping

Lo, N., Cunningham, M.R., Jones, P.A., Burton, M.G., Wong, T., Muller, E., Kramer, C., Ossenkopf, V., Henkel, C., Deragopian, G., Donnelly, S., Bains, I., and Ladd, F. (2009) Molecular line mapping of the giant molecular cloud associated with RCW 106-III. Multimolecular line mapping. Monthly Notices of the Royal Astronomical Society, 395 (2). pp. 1021-1042.

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Abstract

We present multimolecular line maps obtained with the Mopra telescope towards the southern giant molecular cloud (GMC) complex G333, associated with the H ii region RCW 106. We have characterized the GMC by decomposing the 3D data cubes with gaussclumps, and investigated spatial correlations among different molecules with principal component analysis (PCA). We find no correlation between clump size and linewidth, but a strong correlation between emission luminosity and linewidth. PCA classifies molecules into high- and low-density tracers, and reveals that HCO+ and N2H+ are anticorrelated.

Item ID: 11539
Item Type: Article (Refereed Research - C1)
Keywords: stars: formation – ISM: clouds – ISM: molecules – ISM: structure – radio lines:
ISSN: 1365-2966
Date Deposited: 07 Jun 2010 22:56
FoR Codes: 02 PHYSICAL SCIENCES > 0201 Astronomical and Space Sciences > 020104 Galactic Astronomy @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970102 Expanding Knowledge in the Physical Sciences @ 100%
Citation Count from Web of Science Web of Science 21
Downloads: Total: 2
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