Affiliation
School of Physics, University of New South Wales, Sydney, Australia
Main category
Natural Sciences (Astrophysics and Astrononmy)
Abstract
The 22 m diameter Mopra telescope in Australia is being used to undertake an improved survey of
the CO J = 1{0 line at 3mm along the 4th quadrant of the Galaxy, achieving an order of magnitude
better spatial and spectral resolution (i.e. 0.6 and 0.1 km/s) than the Dame et al. (2001) survey that is
publically available for the Southern Galactic plane. Furthermore, the Mopra CO survey includes the four
principal isotopologues of the CO molecule (i.e. 12CO, 13CO, C18O and C17O). The survey makes use of
an 8 GHz-wide spectrometer and a fast mode of on-the-y mapping developed for the Mopra telescope,
where the cycle time has been reduced to just 1=4 of a second. 38 square degrees of the Galaxy, from
l = 306{344, b = 0:5 have currently been surveyed, together with additional 9 sq. deg. regions around
the Carina complex and the Central Molecular Zone.
We present new results from the survey (see also Burton et al., 2013, 2014). The Mopra CO data are
being made publically available as they are published; for the latest release see the project website at
www.phys.unsw.edu.au/mopraco.
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