dc.contributor.author Yan, Q. dc.contributor.author Walsh, A. dc.contributor.author Dawson, J. dc.contributor.author Macquart, Jean-Pierre dc.contributor.author Blackwell, R. dc.contributor.author Burton, M. dc.contributor.author Rowell, G. dc.contributor.author Zhang, B. dc.contributor.author Xu, Y. dc.contributor.author Tang, Z. dc.contributor.author Hancock, Paul dc.date.accessioned 2017-11-20T08:49:29Z dc.date.available 2017-11-20T08:49:29Z dc.date.created 2017-11-20T08:13:31Z dc.date.issued 2017 dc.identifier.citation Yan, Q. and Walsh, A. and Dawson, J. and Macquart, J. and Blackwell, R. and Burton, M. and Rowell, G. et al. 2017. Towards a three-dimensional distribution of the molecular clouds in the Galactic Centre. Monthly Notices of the Royal Astronomical Society. 471 (3): pp. 2523-2536. dc.identifier.uri http://hdl.handle.net/20.500.11937/57869 dc.identifier.doi 10.1093/mnras/stx1724 dc.identifier.doi http://dx.doi.org/10.1093/mnras/stx1724 dc.description.abstract We present a study of the three-dimensional structure of the molecular clouds in the Galactic Centre (GC) using CO emission and OH absorption lines. Two CO isotopologue lines, $^{12}$CO ($J$=1$\rightarrow$0) and $^{13}$CO ($J$=1$\rightarrow$0), and four OH ground-state transitions, surveyed by the Southern Parkes Large-Area Survey in Hydroxyl (SPLASH), contribute to this study. We develop a novel method to calculate the OH column density, excitation temperature, and optical depth precisely using all four OH lines, and we employ it to derive a three-dimensional model for the distribution of molecular clouds in the GC for six slices in Galactic latitude. The angular resolution of the data is 15.5 arcmin, which at the distance of the GC (8.34 kpc) is equivalent to 38 pc. We find that the total mass of OH in the GC is in the range 2400-5100 Solar mass . The face-on view at a Galactic latitude of b = 0{\deg} displays a bar-like structure with an inclination angle of 67.5 $\pm$ 2.1{\deg} with respect to the line of sight. No ring-like structure in the GC is evident in our data, likely due to the low spatial resolution of the CO and OH maps. dc.publisher Oxford University Press dc.title Towards a three-dimensional distribution of the molecular clouds in the Galactic Centre dc.type Journal Article dcterms.source.volume 471 dcterms.source.number 3 dcterms.source.startPage 2523 dcterms.source.endPage 2536 dcterms.source.issn 0035-8711 dcterms.source.title Monthly Notices of the Royal Astronomical Society curtin.department Department of Physics and Astronomy curtin.accessStatus Fulltext not available
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