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

journal contribution
posted on 2023-05-17, 04:08 authored by Green, JA, Caswell, JL, Fuller, GA, Avison, A, Breen, SL, Simon EllingsenSimon Ellingsen, Gray, MD, Pestalozzi, M, Quinn, L, Thompson, MA, Voronkov, MA
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.


Publication title

Monthly Notices of the Royal Astronomical Society








School of Natural Sciences


Blackwell Publishing Ltd

Place of publication

9600 Garsington Rd, Oxford, England, Oxon, Ox4 2Dg

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Expanding knowledge in the physical sciences

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