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Observations of the Hydrogen Cyanide in Comet 46P/Wirtanen at a 3.4 mm Wavelength

文献类型：期刊论文

作者Wang Zhen5; Zhang Shao-Bo6,7; Tseng Wei-Ling2; Sun Ji-Xian6,7; Liao Ying4; Ip Wing-Huen3,4; Zheng Xing-Wu8; Wang Na5; Lu Deng-Rong6,7; Chen Lue5
刊名ASTRONOMICAL JOURNAL
出版日期2020-05-01
卷号159期号:5页码:5
ISSN号0004-6256
关键词Comets Comae Small solar system bodies Short period comets
DOI10.3847/1538-3881/ab8734
英文摘要We searched for rotational lines of (HCN)-C-12-N-14 in comet 46P/Wirtanen, using the Purple Mountain Observatory 13.7 m radio telescope. The J = 1-0 lines of HCN (3.4 mm wavelength) were unambiguously detected in 46P during the 2018 December 14-15 period, with a beam resolution of 622 and a velocity resolution of similar to 0.21 km s(-1) per channel. The molecular production rates were computed. The mean HCN(1-0) production rate of 46P was (6.45 +/- 1.31) x 10(24) molec s(-1) in the above two days. We found possible indications of time variation in the outgassing activity. The average HCN abundance relative to water Q([HCN])/Q([H2O]) of 46P was (0.09 +/- 0.01)%. The HCN line shapes gave primary information on the kinematics of the cometary atmosphere. The HCN linewidths provided a direct determination of the coma expansion velocity, which was about 0.5 +/- 0.05 km s(-1) at post-perihelion (1.056 au).
WOS关键词MOLECULAR OBSERVATIONS ; EXPANSION VELOCITY ; PARENT MOLECULES ; HALE-BOPP ; HCN ; MILLIMETER ; EMISSION ; NUCLEUS ; IRAM ; JCMT
资助项目foresight project funding of center for Astronomical Mega-Science, Chinese Academy of Sciences[2019000009] ; Chinese Academy of Sciences Taiwan Young Talent Programme[2018TW2JA0006] ; Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; National Nature Science Foundation of China[11503073] ; Chinese Academy of Sciences Foundation of the young scholars of western[2015XBQN-B-02] ; Surface Projects of NSFC[11673056]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000531274500001
资助机构foresight project funding of center for Astronomical Mega-Science, Chinese Academy of Sciences ; foresight project funding of center for Astronomical Mega-Science, Chinese Academy of Sciences ; Chinese Academy of Sciences Taiwan Young Talent Programme ; Chinese Academy of Sciences Taiwan Young Talent Programme ; Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Chinese Academy of Sciences Foundation of the young scholars of western ; Chinese Academy of Sciences Foundation of the young scholars of western ; Surface Projects of NSFC ; Surface Projects of NSFC ; foresight project funding of center for Astronomical Mega-Science, Chinese Academy of Sciences ; foresight project funding of center for Astronomical Mega-Science, Chinese Academy of Sciences ; Chinese Academy of Sciences Taiwan Young Talent Programme ; Chinese Academy of Sciences Taiwan Young Talent Programme ; Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Chinese Academy of Sciences Foundation of the young scholars of western ; Chinese Academy of Sciences Foundation of the young scholars of western ; Surface Projects of NSFC ; Surface Projects of NSFC ; foresight project funding of center for Astronomical Mega-Science, Chinese Academy of Sciences ; foresight project funding of center for Astronomical Mega-Science, Chinese Academy of Sciences ; Chinese Academy of Sciences Taiwan Young Talent Programme ; Chinese Academy of Sciences Taiwan Young Talent Programme ; Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Chinese Academy of Sciences Foundation of the young scholars of western ; Chinese Academy of Sciences Foundation of the young scholars of western ; Surface Projects of NSFC ; Surface Projects of NSFC ; foresight project funding of center for Astronomical Mega-Science, Chinese Academy of Sciences ; foresight project funding of center for Astronomical Mega-Science, Chinese Academy of Sciences ; Chinese Academy of Sciences Taiwan Young Talent Programme ; Chinese Academy of Sciences Taiwan Young Talent Programme ; Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Chinese Academy of Sciences Foundation of the young scholars of western ; Chinese Academy of Sciences Foundation of the young scholars of western ; Surface Projects of NSFC ; Surface Projects of NSFC
源URL[http://ir.bao.ac.cn/handle/114a11/54962]  
专题中国科学院国家天文台
通讯作者Wang Zhen
作者单位1.Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, Wuhan 430079, Peoples R China
2.Natl Taiwan Normal Univ, Taipei, Taiwan
3.Natl Cent Univ, Inst Astron, Chungli 32054, Taiwan
4.Macau Univ Sci & Technol, Space Sci Inst, Macau, Peoples R China
5.Chinese Acad Sci, Xinjiang Astron Observ, Key Lab Radio Astron, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
6.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
7.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
8.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China
9.Chinese Acad Sci, Lunar & Deep Space Explorat, Natl Astron Observ, Beijing 100012, Peoples R China
推荐引用方式
GB/T 7714		 Wang Zhen,Zhang Shao-Bo,Tseng Wei-Ling,et al. Observations of the Hydrogen Cyanide in Comet 46P/Wirtanen at a 3.4 mm Wavelength[J]. ASTRONOMICAL JOURNAL,2020,159(5):5.
APA Wang Zhen.,Zhang Shao-Bo.,Tseng Wei-Ling.,Sun Ji-Xian.,Liao Ying.,...&Ping Jin-Song.(2020).Observations of the Hydrogen Cyanide in Comet 46P/Wirtanen at a 3.4 mm Wavelength.ASTRONOMICAL JOURNAL,159(5),5.
MLA Wang Zhen,et al."Observations of the Hydrogen Cyanide in Comet 46P/Wirtanen at a 3.4 mm Wavelength".ASTRONOMICAL JOURNAL 159.5(2020):5.

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