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Detection of water masers in a sample of 84 IRAS sources
作者姓名:WU  YueFang  ESIMBEK  Jarken  WANG  JunZhi  LIU  Xiang  QIN  ShengLi  ZHANG  Jin
作者单位:[1]Astronomy Department, CAS-PKU Joint Beijing Astrophysics Center, Peking University, Beijing 100871, China [2]National Astronomical Observatodes/Urumqi Observatory, Chinese Academy of Sciences, Urumqi 830011, China [3]Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China; [4]National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
基金项目:Supported by NKBRSF (G1999075405) and the National Natural Science Foundation of China (Grant Nos. 10133020, 10203003 & 10128306).We are grateful to Wang Huaxiang, Sun Zhengwen, Rezwan, Yang Wenjun, Ali, and Wang Weixia for their assistance in the observation and to Huang Maohai for helpful discussions. We are also thankful for staff of Urumqi 0bservatory for their various helps during the observation period.
摘    要:Using a newly installed system on the 25 m telescope of Urumqi Observatory, we searched for H20 maser emission towards 84 IRAS sources including young stellar objects (YSOs) and candidates for OFUIR stars. Water masers were detected in four star formation regions and one envelope of late type of stars for the first time. New water maser components were measured in two sources. In a maser source with no water maser emission detected six years ago, strong maser emission was found at different velocities, showing that there was a new explosion of water maser in this source.

关 键 词:星际介质  拱星物质  微波激射器  太空
收稿时间:23 April 2006
修稿时间:2006-04-232006-05-18

Detection of water masers in a sample of 84 IRAS sources
WU YueFang ESIMBEK Jarken WANG JunZhi LIU Xiang QIN ShengLi ZHANG Jin.Detection of water masers in a sample of 84 IRAS sources[J].Chinese Science Bulletin,2007,52(1):52-56.
Authors:Wu YueFang  Esimbek Jarken  Wang JunZhi  Liu Xiang  Qin ShengLi  Zhang Jin
Institution:(1) Astronomy Department, CAS-PKU Joint Beijing Astrophysics Center, Peking University, Beijing, 100871, China;(2) National Astronomical Observatories/Urumqi Observatory, Chinese Academy of Sciences, Urumqi, 830011, China;(3) Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, 210008, China;(4) National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China
Abstract:Using a newly installed system on the 25 m telescope of Urumqi Observatory, we searched for H2O maser emission towards 84 IRAS sources including young stellar objects (YSOs) and candidates for OH/IR stars. Water masers were detected in four star formation regions and one envelope of late type of stars for the first time. New water maser components were measured in two sources. In a maser source with no water maser emission detected six years ago, strong maser emission was found at different velocities, showing that there was a new explosion of water maser in this source.
Keywords:maser  interstellar medium  circumstellar envelope
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