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

N. Lo, M. R. Cunningham, P. A. Jones, I. Bains, M. G. Burton, T. Wong, E. Muller, C. Kramer, V. Ossenkopf, C. Henkel, G. Deragopian, S. Donnelly, E. F. Ladd

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish (US)
Pages (from-to)1021-1042
Number of pages22
JournalMonthly Notices of the Royal Astronomical Society
Volume395
Issue number2
DOIs
StatePublished - May 2009

Keywords

  • ISM: clouds
  • ISM: molecules
  • ISM: structure
  • Radio lines: ISM
  • Stars: formation

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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