12.2-GHz methanol maser MMB follow-up catalogue - III. Longitude range 10 to 20 degrees

Abstract

We present the third instalment of a series of catalogues presenting 12.2-GHz methanol maser observations made towards each of the 6.7-GHz methanol masers detected in the Methanol Multibeam (MMB) Survey. The current portion of the catalogue includes the Galactic longitude region 10 to 20 degrees, where we detect 47 12.2-GHz methanol masers towards 99 6.7-GHz targets. We compare the occurrence of 12.2-GHz methanol masers with water maser emission, for which all 6.7-GHz methanol masers in the 6 to 20 degrees longitude range have now been searched. We suggest that the water masers follow a more complicated evolutionary scenario than has been found for the methanol and OH masers, likely due to their different pumping mechanisms. Comparisons of the 6.7-GHz methanol to OH maser peak flux density ratio and the luminosity of the associated 12.2-GHz sources suggests that the 12.2-GHz maser luminosity begins to decline around the time that an OH maser becomes detectable.

MNRAS accepted

References in corpus (4)

• Trigonometric Parallaxes of Massive Star Forming Regions: VI. Galactic Structure, Fundamental Parameters and Non-Circular Motions
• The 6-GHz Multibeam Maser Survey I. Techniques
• Class I methanol masers in the outflow of IRAS 16547-4247
• Water maser variability over 20 years in a large sample of star-forming regions: the complete database

Cited by in corpus (14)

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• A search for water masers associated with class II methanol masers - I. Longitude range 6 to 20 degrees
• 84-GHz methanol masers, their relationship to 36-GHz methanol masers and their molecular environments
• Simultaneous Survey of Water and Class I Methanol Masers toward Red MSX Sources
• The 6-GHz multibeam maser survey III: comparison between the MMB and HOPS
• The Evolutionary Status of Protostellar Clumps Hosting Class II Methanol Masers
• ATLASGAL -- Relationship between dense star forming clumps and interstellar masers
• The first high-resolution observations of 37.7-, 38.3- and 38.5-GHz methanol masers
• ATLASGAL: 3-mm class I methanol masers in high-mass star formation regions
• MAGMO: Polarimetry of 1720-MHz OH Masers towards Southern Star Forming Regions
• Redshifted methanol absorption tracing infall motions of high-mass star formation regions
• Observations of 12.2 GHz methanol masers towards northern high-mass protostellar objects
• FUGIN hot core survey. I. Survey method and initial results for $l=10^{\circ }-20^{\circ }$