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MALT90: The millimetre astronomy legacy team 90 GHz survey


Jackson, JM and Rathborne, JM and Foster, JB and Whitaker, JS and Sanhueza, P and Claysmith, C and Mascoop, JL and Wienen, M and Breen, SL and Herpin, F and Duarte-Cabral, A and Csengeri, T and Longmore, SN and Contreras, Y and Indermuele, B and Barnes, PJ and Walsh, AJ and Cunningham, MR and Brooks, KJ and Britton, TR and Voronkov, MA and Urquhart, JS and Alves, J and Jordan, CH and Hill, T and Hoq, S and Finn, SC and Bains, I and Bontemps, S and Bronfman, L and Caswell, JL and Deharveng, L and Ellingsen, SP and Fuller, GA and Garay, G and Green, JA and Hindson, L and Jones, PA and Lenfestey, C and Lo, N and Lowe, V and Mardones, D and Menten, KM and Minier, V and Morgan, LK and Motte, F and Muller, E and Peretto, N and Purcell, CR and Schilke, P and Bontemps, S-N and Schuller, F and Titmarsh, AM and Wyrowski, F and Zavagno, A, MALT90: The millimetre astronomy legacy team 90 GHz survey, Publications of the Astronomical Society of Australia, 30 Article e057. ISSN 1448-6083 (2013) [Refereed Article]

Copyright Statement

Copyright 2013 Astronomical Society of Australia

DOI: doi:10.1017/pasa.2013.37


The Millimetre Astronomy Legacy Team 90 GHz (MALT90) survey aims to characterise the physical and chemical evolution of high-mass star-forming clumps. Exploiting the unique broad frequency range and on-the-fly mapping capabilities of the Australia Telescope National Facility Mopra 22 m single-dish telescope, MALT90 has obtained 3′ × 3′ maps towards ~2 000 dense molecular clumps identified in the ATLASGAL 870 μm Galactic plane survey. The clumps were selected to host the early stages of high-mass star formation and to span the complete range in their evolutionary states (from prestellar, to protostellar, and on to regions and photodissociation regions). Because MALT90 mapped 16 lines simultaneously with excellent spatial (38 arcsec) and spectral (0.11 km s−1) resolution, the data reveal a wealth of information about the clumps’ morphologies, chemistry, and kinematics. In this paper we outline the survey strategy, observing mode, data reduction procedure, and highlight some early science results. All MALT90 raw and processed data products are available to the community. With its unprecedented large sample of clumps, MALT90 is the largest survey of its type ever conducted and an excellent resource for identifying interesting candidates for high-resolution studies with ALMA.

Item Details

Item Type:Refereed Article
Keywords:ISM: clouds – ISM: molecules – stars: formation
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Cosmology and extragalactic astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Jordan, CH (Mr Christopher Jordan)
UTAS Author:Ellingsen, SP (Professor Simon Ellingsen)
UTAS Author:Titmarsh, AM (Miss Anita Titmarsh)
ID Code:88689
Year Published:2013
Web of Science® Times Cited:105
Deposited By:Mathematics and Physics
Deposited On:2014-02-12
Last Modified:2017-11-01

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