Pilot observations for MALT-45: a Galactic plane survey at 7 mm
Author
dc.contributor.author
Jordan, C. H.
Author
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Walsh, A. J.
es_CL
Author
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Lowe, V.
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Author
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Lo, N.
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Author
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Purcell, C. R.
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Author
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Voronkov, M. A.
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Author
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Longmore, S. N.
es_CL
Admission date
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2014-03-06T20:19:55Z
Available date
dc.date.available
2014-03-06T20:19:55Z
Publication date
dc.date.issued
2013
Cita de ítem
dc.identifier.citation
MNRAS 429, 469–481 (2013)
en_US
Identifier
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doi:10.1093/mnras/sts350
Identifier
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https://repositorio.uchile.cl/handle/2250/126430
General note
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Artículo de publicación ISI
en_US
Abstract
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We introduce the Millimetre Astronomer’s Legacy Team – 45 GHz (MALT-45) Galactic plane
survey and describe pilot survey results with the Australia Telescope Compact Array (ATCA).
The pilot survey was conducted to test the instrumentation and observational technique of
MALT-45, before commencing the full survey. We mapped two half-square degree regions
within the southern Galactic plane around the G333 giant molecular cloud, using fast mosaic
mapping. Using the new Compact Array Broad-band Backend on the ATCA, we were able to
observe two 2048MHzspectral windows, centred on frequencies 43.2 and 48.2 GHz. Although
only a coarse spectral resolution of around 7 km s−1 was available to us, we detect widespread,
extended emission in the CS (1–0) ground state transition.We also detect eight Class I CH3OH
masers at 44 GHz and three SiO masers in vibrationally excited (1–0) transitions. We also
detect the H53α radio recombination line, non-vibrationally excited SiO (1–0) and emission
in the CH3OH 11–00 A+ line.
en_US
Lenguage
dc.language.iso
en
en_US
Publisher
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Oxford University Press on behalf of the Royal Astronomical Society