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

Abstract

We present multi-molecular line maps obtained with the Mopra Telescope towards the southern giant molecular cloud (GMC) complex G333, associated with the HII region RCW 106. We have characterised 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 line width, but a strong correlation between emission luminosity and line width. PCA classifies molecules into high and low density tracers, and reveals that HCO+ and N2H+ are anti-correlated.

24 pages, 21 figures accepted by MNRAS

References in corpus (8)

• Bias-free Measurement of Giant Molecular Cloud Properties
• Spectral imaging of the Sagittarius B2 region in multiple 3-mm molecular lines with the Mopra telescope
• Molecular line mapping of the giant molecular cloud associated with RCW 106 - II. Column density and dynamical state of the clumps
• A search for 22-GHz water masers within the giant molecular cloud associated with RCW106
• A Pilot Survey for the H${}_2$O Southern Galactic Plane Survey (HOPS)
• Comparative Analysis of Molecular Clouds in M31, M33 and the Milky Way
• Detection of SiO emission from a massive dense cold core
• Radio and infrared recombination studies of the southern massive star-forming region G333.6-0.2

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