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Observations of the Hydrogen Cyanide in Comet 46P/Wirtanen at a 3.4 mm Wavelength
Wang Zhen1; Zhang Shao-Bo2,3; Tseng Wei-Ling4; Sun Ji-Xian2,3; Liao Ying5; Ip Wing-Huen5,6; Zheng Xing-Wu7; Wang Na1; Lu Deng-Rong2,3; Chen Lue1; Shan Hao1; Yuan Ye1; Yan Jian-Guo8; Ping Jin-Song9
2020-05-01
Source PublicationASTRONOMICAL JOURNAL
ISSN0004-6256
Volume159Issue:5Pages:5
AbstractWe 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).
Corresponding AuthorWang Zhen(wangzh@xao.ac.cn)
KeywordComets Comae Small solar system bodies Short period comets
DOI10.3847/1538-3881/ab8734
Indexed BySCI ; SCI
Language英语
WOS KeywordMOLECULAR OBSERVATIONS ; EXPANSION VELOCITY ; PARENT MOLECULES ; HALE-BOPP ; HCN ; MILLIMETER ; EMISSION ; NUCLEUS ; IRAM ; JCMT
Funding Projectforesight 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 Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000531274500001
PublisherIOP PUBLISHING LTD
Funding Organizationforesight project funding of center for Astronomical Mega-Science, Chinese Academy of Sciences ; Chinese Academy of Sciences Taiwan Young Talent Programme ; Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; National Nature Science Foundation of China ; Chinese Academy of Sciences Foundation of the young scholars of western ; Surface Projects of NSFC
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Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/3485
Collection射电天文研究室_行星科学研究组
Corresponding AuthorWang Zhen
Affiliation1.Chinese Acad Sci, Xinjiang Astron Observ, Key Lab Radio Astron, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
4.Natl Taiwan Normal Univ, Taipei, Taiwan
5.Macau Univ Sci & Technol, Space Sci Inst, Macau, Peoples R China
6.Natl Cent Univ, Inst Astron, Chungli 32054, Taiwan
7.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China
8.Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, Wuhan 430079, Peoples R China
9.Chinese Acad Sci, Lunar & Deep Space Explorat, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
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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