Tianma 65-m telescope detection of new OH maser features towards the water fountain source IRAS 18286-0959

doi:10.1093/mnras/stx622

	Tianma 65-m telescope detection of new OH maser features towards the water fountain source IRAS 18286-0959
	Chen, Xi 1,2,3; Shen, Zhi-Qiang 1,3; Li, Xiao-Qiong 1,4; Yang, Kai 1,4; Nakashima, Jun-ichi 5; Wu, Ya-Jun 1,3; Zhao, Rong-Bin 1,3; Li, Juan 1,3; Wang, Jun-Zhi 1,3; Jiang, Dong-Rong 1,3
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2017-07-01
卷号	468 期号:3 页码:3602-3606
关键词	masers stars: AGB and post-AGB ISM: molecules radio lines: ISM
ISSN号	0035-8711
DOI	10.1093/mnras/stx622
通讯作者	Chen, Xi(chenxi@shao.ac.cn) ; Shen, Zhi-Qiang(zshen@shao.ac.cn)
英文摘要	We report the results of the OH maser observation towards the water fountain source IRAS 18286-0959 using the newly built Shanghai Tianma 65-m Radio Telescope. We observed the three OH ground state transition lines at frequencies of 1612, 1665 and 1667 MHz. Comparing with the spectra of previous observations, we find new maser spectral components at velocity channels largely shifted from the systemic velocity: the velocity offsets of the newly found components lie in the range 20-40 km s(-1) with respect to the systemic velocity. Besides maser variability, another possible interpretation for the newly detected maser features is that part of the molecular gas in the circumstellar envelope is accelerated. The acceleration is probably caused by the passage of a high-velocity molecular jet, which has been detected in previous Very Long Baseline Interferometry observations in the H2O maser line.
WOS关键词	ASYMPTOTIC GIANT BRANCH ; CIRCUMSTELLAR ENVELOPES ; PLANETARY-NEBULAE ; STARS ; JETS ; IDENTIFICATION ; EMISSION ; OUTFLOWS ; DISTANCE ; OBJECTS
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000402808700084
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/23000]
专题	中国科学院紫金山天文台
通讯作者	Chen, Xi; Shen, Zhi-Qiang
作者单位	1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.GuangZhou Univ, Ctr Astrophys, Guangzhou 510006, Guangdong, Peoples R China 3.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China 4.Univ Chinese Acad Sci, 19A Yuquanlu, Beijing 100049, Peoples R China 5.Ural Fed Univ, Dept Astron & Geodesy, Lenin Ave 51, Ekaterinburg 620000, Russia 6.N Copernicus Astron Ctr, Rabianska 8, PL-87100 Torun, Poland
推荐引用方式 GB/T 7714	Chen, Xi,Shen, Zhi-Qiang,Li, Xiao-Qiong,et al. Tianma 65-m telescope detection of new OH maser features towards the water fountain source IRAS 18286-0959[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,468(3):3602-3606.
APA	Chen, Xi.,Shen, Zhi-Qiang.,Li, Xiao-Qiong.,Yang, Kai.,Nakashima, Jun-ichi.,...&Yung, Bosco H. K..(2017).Tianma 65-m telescope detection of new OH maser features towards the water fountain source IRAS 18286-0959.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,468(3),3602-3606.
MLA	Chen, Xi,et al."Tianma 65-m telescope detection of new OH maser features towards the water fountain source IRAS 18286-0959".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 468.3(2017):3602-3606.