A Pilot Survey for the H${}_2$O Southern Galactic Plane Survey (HOPS)

Abstract

We describe observations with the Mopra radiotelescope designed to assess the feasibility of the H${}_2$O maser southern Galactic plane survey (HOPS). We mapped two one-square-degree regions along the Galactic plane using the new 12 mm receiver and the UNSW Mopra spectrometer (MOPS). We covered the entire spectrum between 19.5 and 27.5 GHz using this setup with the main aims of finding out which spectral lines can be detected with a quick mapping survey. We report on detected emission from H${}_2$O masers, NH${}_3$ inversion transitions (1,1), (2,2) and (3,3), HC${}_3$N (3-2), as well as several radio recombination lines.

accepted by PASA

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• A search for 22-GHz water masers within the giant molecular cloud associated with RCW106
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Cited by in corpus (30)

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• Gravity drives the evolution of infrared dark hubs: JVLA observations of SDC13
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• Major structures of the inner Galaxy delineated by 6.7-GHz methanol masers
• The RMS Survey: H2O masers towards a sample of southern hemisphere massive YSO candidates and ultra compact HII regions
• Spectral imaging of the Central Molecular Zone in multiple 7-mm molecular lines
• Constraining the properties of 1.2-mm dust clumps that contain luminous water masers
• Masers associated with high-mass star formation regions in the Large Magellanic Cloud
• H2O Southern Galactic Plane Survey (HOPS): Paper III - Properties of Dense Molecular Gas across the Inner Milky Way
• 3 to 12 millimetre studies of dense gas towards the western rim of supernova remnant RX J1713.7-3946
• Characterisation of the Mopra Radio Telescope at 16--50 GHz
• 12mm line survey of the dense molecular gas towards the W28 field TeV gamma-ray sources
• The G305 star forming complex: Wide-Area molecular mapping of NH3 and H2O masers
• Discovery of the new class I methanol maser transition at 23.4 GHz
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• Pilot Observations for MALT-45: A Galactic Plane Survey at 7mm
• The when and where of water in the history of the universe
• 22GHz water maser survey of Xinjiang Astronomical Observatory