The 6-GHz methanol multibeam maser catalogue - II. Galactic longitudes 6° to 20°

J. A. Green, J. L. Caswell, G. A. Fuller, A. Avison, S. L. Breen, S. P. Ellingsen, M. D. Gray, M. Pestalozzi, L. Quinn, M. A. Thompson, M. A. Voronkov

    Research output: Contribution to journalArticlepeer-review


    We present the second portion of an unbiased survey of the Galactic plane for 6668-MHz methanol masers. This section of the survey spans the longitude range 6° to 20°. We report the detection of 119 maser sources, of which 42 are new discoveries. The masers are tightly constrained to the Galactic plane, with only four outside a latitude range of ±1°. This longitude region includes the brightest known 6668-MHz methanol maser, 9.621+0.196, as well as the two brightest newly discovered sources in the southern survey as a whole. We list all the sources associated with the 3-kpc arms within ±15° longitude and consider further candidates beyond 15° longitude. We identify three new sources associated with the Galactic bar and comment on the density of masers in relation to the bar orientation. © 2010 The Authors. Journal compilation © 2010 RAS.
    Original languageEnglish
    Pages (from-to)913-935
    Number of pages22
    JournalMonthly Notices of the Royal Astronomical Society
    Issue number3
    Publication statusPublished - Dec 2010


    • Galaxy: structure
    • ISM: molecules
    • Masers
    • Stars: formation
    • Surveys


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