High-Mass Star Formation in the Near and Far 3-KPC Arms
arXiv:0904.4303 · doi:10.1088/0004-637X/696/2/L156
Abstract
We 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.
arXiv comment6 pages, 3 figures, published in ApJ letters 696, L156-158
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- Precise Positions of Methanol Masers
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- Major structures of the inner Galaxy delineated by 6.7-GHz methanol masers
- A Water Maser and Ammonia Survey of GLIMPSE Extended Green Objects (EGOs)
- The ATCA HI Galactic Center Survey
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- An International Survey of Front-End Receivers and Observing Performance of Telescopes for Radio Astronomy
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- On the many '3-kiloparsec arms' - shocked wave and nuclear rotation
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