J. A. Green et al 2009 ApJ 696 L156 doi:10.1088/0004-637X/696/2/L156
J. A. Green1, N. M. McClure-Griffiths1, J. L. Caswell1, S. P. Ellingsen3, G. A. Fuller2, L. Quinn2 and M. A. Voronkov1
Show affiliationsWe report on the presence of 6.7 GHz methanol masers, known tracers of high-mass star formation, in the 3 kpc arms of the inner Galaxy. We present 49 detections from the Methanol Multibeam Survey, the largest Galactic plane survey for 6.7 GHz methanol masers, which coincide in longitude, latitude, and velocity with the recently discovered far-side 3 kpc arm and the well-known near-side 3 kpc arm. The presence of these masers is significant evidence for high-mass star formation actively occurring in both 3 kpc arms.
98.35.Ac Origin, formation, evolution, age, and star formation
98.35.Hj Spiral arms and galactic disk
95.80.+p Astronomical catalogs, atlases, sky surveys, databases, retrieval systems, archives, etc.
Issue 2 (2009 May 10)
Received 2009 March 9, accepted for publication 2009 April 1
Published 2009 April 24
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