Absolute positions of 6.7-GHz methanol masers

Abstract

The ATCA, MERLIN and VLA interferometers were used to measure the absolute positions of 35 6.7 GHz methanol masers to subarcsecond or higher accuracy. Our measurements represent essential preparatory data for Very Long Baseline Interferometry, which can provide accurate parallax and proper motion determinations of the star-forming regions harboring the masers. Our data also allow associations to be established with infrared sources at different wavelengths. Our findings support the view that the 6.7 GHz masers are associated with the earliest phases of high-mass star formation.

A&A accepted 29 pages, 6 figures, 5 tables

References in corpus (9)

• Trigonometric Parallaxes of Massive Star Forming Regions: VI. Galactic Structure, Fundamental Parameters and Non-Circular Motions
• {Millimeter Multiplicity in NGC 6334 I and I(N)
• The Arecibo Methanol Maser Galactic Plane Survey--I: Data
• Searching for massive pre--stellar cores through observations of N2H+ and N2D+
• A GLIMPSE-based search for 6.7-GHz Methanol Masers and the lifetime of their spectral features
• Resolving distance ambiguities towards 6.7 GHz methanol masers
• A multi-transition molecular line study of candidate massive young stellar objects associated with methanol masers
• Search for Compact Extragalactic Radio Sources Near Massive Star Forming Regions
• How do methanol masers manage to appear in the youngest star vicinities and isolated molecular clumps?

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