The 6-GHz methanol multibeam maser catalogue - I. Galactic Centre region, longitudes 345? to 6?
dc.contributor.author | Caswell, J.L. | |
dc.contributor.author | Phillips, C | |
dc.contributor.author | Fuller, G.A. | |
dc.contributor.author | Green, J A | |
dc.contributor.author | Avison, A | |
dc.contributor.author | Breen, S.L. | |
dc.contributor.author | Burton, Michael Graham | |
dc.contributor.author | Chrysostomou, A | |
dc.contributor.author | Cox, J | |
dc.contributor.author | Diamond, Philip John | |
dc.contributor.author | McClure-Griffiths, Naomi | |
dc.date.accessioned | 2022-01-12T01:08:14Z | |
dc.date.available | 2022-01-12T01:08:14Z | |
dc.date.issued | 2010 | |
dc.date.updated | 2020-12-06T07:18:56Z | |
dc.description.abstract | We have conducted a Galactic plane survey of methanol masers at 6668 MHz using a sevenbeam receiver on the Parkes telescope. Here we present results from the first part, which provides sensitive unbiased coverage of a large region around the Galactic Centre. Details are given for 183 methanol maser sites in the longitude range 345◦ through the Galactic Centre to 6◦. Within 6◦ of the Galactic Centre, we found 88 maser sites, of which more than half (48) are new discoveries. The masers are confined to a narrow Galactic latitude range, indicative of many sources at the Galactic Centre distance and beyond, and confined to a thin disc population; there is no high-latitude population that might be ascribed to the Galactic bulge. Within 2◦ of the Galactic Centre the maser velocities all lie between −60 and +77 km s−1, a range much smaller than the 540 km s−1 range observed in CO. Elsewhere, the maser with highest positive velocity (+107 km s−1) occurs, surprisingly, near longitude 355◦ and is probably attributable to the Galactic bar. The maser with the most negative velocity (−127 km s−1) is near longitude 346◦, within the longitude–velocity locus of the near side of the ‘3-kpc arm’. It has the most extreme velocity of a clear population of masers associated with the near and far sides of the 3-kpc arm. Closer to the Galactic Centre the maser space density is generally low, except within 0.25 kpc of the Galactic Centre itself, the ‘Galactic Centre zone’, where it is 50 times higher, which is hinted at by the longitude distribution, and confirmed by the unusual velocities. | en_AU |
dc.description.sponsorship | AA and DW-McS acknowledge support from a Science and Technology Facilities Council (STFC) studentship. LQ acknowledges support from the EU Framework 6 Marie Curie Early Stage Training programme under contract MEST-CT-2005-19669 ‘ESTRELA’. | en_AU |
dc.format.mimetype | application/pdf | en_AU |
dc.identifier.issn | 0035-8711 | en_AU |
dc.identifier.uri | http://hdl.handle.net/1885/258353 | |
dc.language.iso | en_AU | en_AU |
dc.provenance | https://v2.sherpa.ac.uk/id/publication/24618..."The Published Version can be archived in an Institutional Repository" from SHERPA/RoMEO site (as at 12/01/2022). This article has been accepted for publication in [Monthly Notices of the Royal Astronomical Society] ©: 2010 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. | en_AU |
dc.publisher | Oxford University Press | en_AU |
dc.rights | © 2010 The Authors. Journal compilation © 2010 RAS | en_AU |
dc.source | Monthly Notices of the Royal Astronomical Society | en_AU |
dc.subject | ISM: molecules | en_AU |
dc.subject | Masers | en_AU |
dc.subject | Stars: formation | en_AU |
dc.subject | Surveys | en_AU |
dc.title | The 6-GHz methanol multibeam maser catalogue - I. Galactic Centre region, longitudes 345? to 6? | en_AU |
dc.type | Journal article | en_AU |
dcterms.accessRights | Open Access | en_AU |
local.bibliographicCitation.issue | 2 | en_AU |
local.bibliographicCitation.lastpage | 1060 | en_AU |
local.bibliographicCitation.startpage | 1029 | en_AU |
local.contributor.affiliation | Caswell, J.L., CSIRO Astronomy & Space-Science | en_AU |
local.contributor.affiliation | Phillips, C, CSIRO, Australia Telescope National Facility | en_AU |
local.contributor.affiliation | Fuller, G.A., University of Manchester | en_AU |
local.contributor.affiliation | Green, J A, CSIRO Astronomy and Space Science | en_AU |
local.contributor.affiliation | Avison, A, University of Manchester | en_AU |
local.contributor.affiliation | Breen, S.L., CSIRO Astronomy & Space-Science | en_AU |
local.contributor.affiliation | Burton, Michael Graham, University of New South Wales | en_AU |
local.contributor.affiliation | Chrysostomou, A, University of Hertfordshire | en_AU |
local.contributor.affiliation | Cox, J, Cardiff University | en_AU |
local.contributor.affiliation | Diamond, Philip John, University of Manchester | en_AU |
local.contributor.affiliation | McClure-Griffiths, Naomi, College of Science, ANU | en_AU |
local.contributor.authoremail | u1000518@anu.edu.au | en_AU |
local.contributor.authoruid | McClure-Griffiths, Naomi, u1000518 | en_AU |
local.description.notes | Imported from ARIES | en_AU |
local.identifier.absfor | 020104 - Galactic Astronomy | en_AU |
local.identifier.absfor | 020103 - Cosmology and Extragalactic Astronomy | en_AU |
local.identifier.absfor | 020102 - Astronomical and Space Instrumentation | en_AU |
local.identifier.ariespublication | a383154xPUB4126 | en_AU |
local.identifier.citationvolume | 404 | en_AU |
local.identifier.doi | 10.1111/j.1365-2966.2010.16339.x | en_AU |
local.identifier.scopusID | 2-s2.0-77953600279 | |
local.identifier.thomsonID | 000277329000032 | |
local.identifier.uidSubmittedBy | a383154 | en_AU |
local.publisher.url | http://www.oxfordjournals.org/ | en_AU |
local.type.status | Published Version | en_AU |
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