Detection of water masers in a sample of 84 IRAS sources  

作　　者：WU YueFang ESIMBEK Jarken WANG JunZhi LIU Xiang QIN ShengLi ZHANG Jin 

机构地区：[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

出　　处：《Chinese Science Bulletin》2007年第1期52-56,共5页

基　　金：Supported by NKBRSF (G1999075405) ;the National Natural Science Founda-tion of China (Grant Nos.10133020, 10203003 & 10128306).

摘　　要：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.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 

分 类 号：P1[天文地球—天文学]