UNUSUAL SHOCK-EXCITED OH MASER EMISSION IN A YOUNG PLANETARY NEBULA

doi:10.3847/0004-637X/817/1/37

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	UNUSUAL SHOCK-EXCITED OH MASER EMISSION IN A YOUNG PLANETARY NEBULA
	Qiao, Hai-Hua 1,2,3,4; Walsh, Andrew J.3; Gomez, Jose F.5; Imai, Hiroshi 6; Green, James A.7; Dawson, Joanne R.8,9,10; Shen, Zhi-Qiang 1,4; Ellingsen, Simon P.11; Breen, Shari L.10; Jones, Paul A.12
刊名	ASTROPHYSICAL JOURNAL
	2016-01-20
卷号	817 期号:1
关键词	Masers Planetary Nebulae: General Planetary Nebulae: Individual (Iras 16333-4807)
ISSN号	0004-637X
DOI	10.3847/0004-637X/817/1/37
英文摘要	We report on OH maser emission toward G336.644-0.695 (IRAS 16333-4807), which is a H2O maser-emitting Planetary Nebula (PN). We have detected 1612, 1667, and 1720 MHz OH masers at two epochs using the Australia Telescope Compact Array, hereby confirming it as the seventh known case of an OH-maser-emitting PN. This is only the second known PN showing 1720 MHz OH masers after K 3-35 and the only evolved stellar object with 1720 MHz OH masers as the strongest transition. This PN is one of a group of very young PNe. The 1612 MHz and 1667 MHz masers are at a similar velocity to the 22 GHz H2O masers, whereas the 1720 MHz masers show a variable spectrum, with several components spread over a higher velocity range (up to 36 km s(-1)). We also detect Zeeman splitting in the 1720 MHz transition at two epochs (with field strengths of similar to 2 to similar to 10 mG), which suggests the OH emission at 1720 MHz is formed in a magnetized environment. These 1720 MHz OH masers may trace short-lived equatorial ejections during the formation of the PN.
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000368872400037
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/32845]
专题	中国科学院上海天文台
通讯作者	Qiao, Hai-Hua
作者单位	1.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquanlu, Beijing 100049, Peoples R China 3.Curtin Univ, Int Ctr Radio Astron Res, GPO Box U1987, Perth, WA 6845, Australia 4.Chinese Acad Sci, Key Lab Radio Astron, Shanghai 200030, Peoples R China 5.CSIC, Inst Astrofis Andalucia, Glorieta Astron S-N, E-18008 Granada, Spain 6.Kagoshima Univ, Grad Sch Sci & Engn, Dept Phys & Astron, 1-21-35 Korimoto, Kagoshima 8900065, Japan 7.SKA Org, Jodrell Bank Observ, Macclesfield SK11 9DL, Cheshire, England 8.Macquarie Univ, Dept Phys & Astron, Sydney, NSW 2109, Australia 9.Macquarie Univ, MQ Res Ctr Astron Astrophys & Astrophoton, Sydney, NSW 2109, Australia 10.CSIRO Astron & Space Sci, Australia Telescope Natl Facil, POB 76, Epping, NSW 1710, Australia
推荐引用方式 GB/T 7714	Qiao, Hai-Hua,Walsh, Andrew J.,Gomez, Jose F.,et al. UNUSUAL SHOCK-EXCITED OH MASER EMISSION IN A YOUNG PLANETARY NEBULA[J]. ASTROPHYSICAL JOURNAL,2016,817(1).
APA	Qiao, Hai-Hua.,Walsh, Andrew J..,Gomez, Jose F..,Imai, Hiroshi.,Green, James A..,...&Cunningham, Maria R..(2016).UNUSUAL SHOCK-EXCITED OH MASER EMISSION IN A YOUNG PLANETARY NEBULA.ASTROPHYSICAL JOURNAL,817(1).
MLA	Qiao, Hai-Hua,et al."UNUSUAL SHOCK-EXCITED OH MASER EMISSION IN A YOUNG PLANETARY NEBULA".ASTROPHYSICAL JOURNAL 817.1(2016).