Molecular line mapping of the giant molecular cloud associated with RCW 106 – III. Multimolecular line mapping |
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| Authors: | N. Lo,M. R. Cunningham,P. A. Jones,I. Bains,M. G. Burton,T. Wong,E. Muller &dagger ,C. Kramer,V. Ossenkopf,C. Henkel,G. Deragopian,S. Donnelly, E. F. Ladd |
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| Affiliation: | School of Physics, University of New South Wales, Sydney, NSW 2052, Australia;Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 1710, Australia;Departamento de AstronomÃa, Universidad de Chile, Casilla 36-D, Santiago, Chile;Centre for Astrophysics and Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, Australia;Astronomy Department, University of Illinois, 1002 W. Green St, Urbana, IL 61801, USA;Department of Astrophysics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan;Instituto de Radioastronomia Milimetrica (IRAM), Avda. Divina Pastora 7, E-18012 Granada, Spain;I. Physikalisches Institut, Universität zu Köln, Zülpicher Straβe 77, 50937 Köln, Germany;SRON, Netherlands Institute for Space Research, PO Box 800, 9700 AV Groningen, The Netherlands;Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany;Centre for Astronomy, James Cook University, Townsville, QLD 4811, Australia;Department of Physics and Astronomy, Bucknell University, Lewisburg, PA 17837, USA |
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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. |
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| Keywords: | stars: formation ISM: clouds ISM: molecules ISM: structure radio lines: ISM |
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