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题名: UNUSUAL SHOCK-EXCITED OH MASER EMISSION IN A YOUNG PLANETARY NEBULA
作者: Qiao, Hai-Hua1, 2, 3, 4; Walsh, Andrew J.3; Gomez, Jose F.5; Imai, Hiroshi6; Green, James A.7; Dawson, Joanne R.8, 9, 10; Shen, Zhi-Qiang1, 4; Ellingsen, Simon P.11; Breen, Shari L.10; Jones, Paul A.12; Gibson, Steven J.13; Cunningham, Maria R.12
刊名: ASTROPHYSICAL JOURNAL
出版日期: 2016-01-20
卷号: 817, 期号:1
关键词: masers ; planetary nebulae: general ; planetary nebulae: individual (IRAS 16333-4807)
DOI: 10.3847/0004-637X/817/1/37
文章类型: Article
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标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: ASYMPTOTIC-GIANT-BRANCH ; SUPERNOVA-REMNANTS ; MAGNETIC-FIELD ; K 3-35 ; MERLIN POLARIMETRY ; STARS ; HYDROXYL ; AGB ; H2O ; IRAS-17347-3139
收录类别: SCI
项目资助者: Commonwealth of Australia for operation as a National Facility managed by CSIRO ; China Scholarship Council (CSC) ; MICINN (Spain)(AYA2011-30228-C03-01 ; FEDER ; Major Program of the National Natural Science Foundation of China(11590780 ; National Basic Research Program of China (973 program)(2012CB821806) ; Strategic Priority Research Program "The emergence of Cosmological Structures" of the Chinese Academy of Science(XDB09000000) ; AYA2014-57369-C3-3) ; 11590784)
语种: 英语
WOS记录号: WOS:000368872400037
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16140
Appears in Collections:南极天文中心_期刊论文

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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
11.Univ Tasmania, Sch Phys Sci, Private Bag 37, Hobart, Tas 7001, Australia
12.Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia
13.Western Kentucky Univ, Dept Phys & Astron, 1906 Coll Hts Blvd, Bowling Green, KY 42101 USA
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