The 6-GHz multibeam maser survey-I. Techniques

By J. Green, J. Caswell, G. Fuller, A. Avison, S. Breen, K. Brooks, M. Burton, A. Chrysostomou, J. Cox, P. Diamond and 15 more. 2008

134 citations recorded by the source corpus.

A new 7-beam 6 7 GHz receiver has been built to survey the Galaxy and the Magellanic Clouds for newly forming high-mass stars that are pinpointed by strong methanol maser emission at 6668 MHz. The receiver was jointly constructed by Jodrell Bank Observatory (JBO) and the Australia Telescope National Facility (ATNF) and allows simultaneous coverage at 6668 and 6035 MHz. It was successfully commissioned at Parkes in January 2006 and is now being used to conduct the Parkes-Jodrell multibeam maser survey of the Milky Way. This will be the first systematic survey of the entire Galactic plane for masers of not only 6668-MHz methanol, but also 6035-MHz excited-state hydroxyl. The survey is two orders of magnitude faster than most previous systematic surveys and has an rms noise level of �0.17Jy. This paper describes the observational strategy, techniques and reduction procedures of the Galactic and Magellanic Cloud surveys, together with deeper, pointed, follow-up observations and complementary observations with other instruments. It also includes an estimate of the survey detection efficiency. The 111 days of observationswith the Parkes telescope have so far yielded >800 methanol sources, of which �350 are new discoveries. The whole project will provide the first comprehensive Galaxy-wide catalogue of 6668-MHz and 6035-MHz masers.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/866ac6027d416e9b4ce7f6ed5b7a299c48085eb4

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

Citations in the corpus

THE RED MSX SOURCE SURVEY: THE MASSIVE YOUNG STELLAR POPULATION OF OUR GALAXY (2013, methodology): “Green et al. 2009).”
Star Formation in the Milky Way and Nearby Galaxies (2012, background): “…for tracers of star formation have been made in radio continuum (free-free) emission (Altenhoff et al. 1970) and recombination lines (Anderson et al. 2011; Lockman 1989), in water masers (Cesaroni et al. 1988; Walsh et al. 2011), and methanol masers (Pestalozzi et al. 2005; Green et al. 2009).”
The observed spiral structure of the Milky Way (2014, background): “The most important progress of the 6.7 GHz methanol maser discovery is the Methanol Multibeam (MMB) Survey of the entire Galactic plane (e.g., Green et al. 2009, 2010, 2012; Caswell et al. 2010, 2011).”
The ATLASGAL survey: a catalog of dust condensations in the Galactic plane (2013, methodology): “Urquhartet al. (2013a) studied the physical properties of sources from the Methanol-MultiBeam survey (Green et al. 2009), a sample of H II regions from the CORNISH survey (Urquhart et al. 2013b) and MYSOs from the RMS survey (Urquhart et al. in prep).”
The 6-GHz methanol multibeam maser catalogue – I. Galactic Centre region, longitudes 345° to 6° (2010, methodology): “However its large latitude suggests that it is more likely to be nearby (Green et al. 2009b).”
The 6-GHz methanol multibeam maser catalogue – II. Galactic longitudes 6° to 20° (2010, background): “A full review of the survey techniques is given in Green et al. (2009a), so only a brief description is presented here together with details specific to the 6◦ to 20◦ longitude region.”
The H2O Southern Galactic Plane Survey (HOPS) – I. Techniques and H2O maser data (2011, background): “The relative occurrence of these two masers can be assessed through the two untargeted surveys: the Methanol Multibeam Survey (Green et al. 2009) and HOPS, described in this paper.”