Chin. Phys. Lett.  2001, Vol. 18 Issue (12): 1663-1665    DOI:
Original Articles |
High-Velocity H2O Masers Associated Massive Star Formation Regions
XU Ye1;JIANG Dong-Rong1;ZHENG Xing-Wu2;GU Min-Feng1;YU Zhi-Yao1;PEI Chun-Chuan3
1Shanghai Astronomical Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Shanghai 200030 2Department of Astronomy, Nanjing University, Nanjing 210093 3Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008
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XU Ye, JIANG Dong-Rong, ZHENG Xing-Wu et al  2001 Chin. Phys. Lett. 18 1663-1665
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Abstract We report on the results of 12CO (1-0) emission associated with H2O masers and massive star formation regions to identify high-velocity H2O masers. Several masers have a large blue-shift, even up to 120km.s-1, with respect to the CO peak, but no large redshifted maser appears. This result suggests that high-velocity H2O masers can most probably occur in high mass star-forming regions and quite a number of masers stem from the amplifications of a background source, which may enable those undetectable weak masers to become to an observable level.
Keywords: 98.38.Er      98.38.Jw      98.35.Ac     
Published: 01 December 2001
PACS:  98.38.Er (Interstellar masers)  
  98.38.Jw (Infrared emission)  
  98.35.Ac (Origin, formation, evolution, age, and star formation)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2001/V18/I12/01663
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XU Ye
JIANG Dong-Rong
ZHENG Xing-Wu
GU Min-Feng
YU Zhi-Yao
PEI Chun-Chuan
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