Completing the Mopra DQS G333 Molecular Line Mapping Survey

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Galactic, Mopra

Scientific paper

The G333 molecular line survey (or `DQS') exploits the capability of the Mopra telescope to survey multiple molecular line transitions in a 1.2 x 0.6 degree region of the southern Galactic plane. The aim is to address some of the major questions concerning our understanding of massive star formation, including the relationship between turbulence and massive star formation, and the sources of turbulence in the ISM. We are using Fourier and non-Fourier methods to characterise the velocity and spatial structure traced by different molecules, and are cross-correlating the results to determine the underlying turbulent structure in the ISM. This is a key project of the UNSW star formation group, and it has grown over the last two years to include other members of both the Australian and overseas communities. During 2006 UNSW joined the NANTEN 2 consortium giving us access to the Nanten II submillimetre telescope in Chile. Complementary observations of the G333 region with Nanten 2 are now being undertaken, extending the range of the temperatures and densities that can be probed.

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