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题名:
Isotopic ratios in outbursting comet C/2015 ER61
作者: Yang B(杨彬)1,2; Hutsemékers, Damien3; Shinnaka, Yoshiharu4; Opitom, Cyrielle1; Manfroid, Jean3; Jehin, Emmanuël3; Meech, Karen J.5; Hainaut, Olivier R.1; Keane, Jacqueline V.5; Gillon, Michaël3
刊名: ASTRONOMY & ASTROPHYSICS
出版日期: 2018-02-05
卷号: 609
DOI: 10.1051/0004-6361/201732100
学科分类: 天文学
产权排序: 第2完成单位
收录类别: EI
通讯作者: Yang B(杨彬)
关键词: comets: general ; comets: individual: C/2015 ER61 (PANSTARRS) ; methods: observational
英文摘要: Isotopic ratios in comets are critical to understanding the origin of cometary material and the physical and chemical conditions in the early solar nebula. Comet C/2015 ER61 (PANSTARRS) underwent an outburst with a total brightness increase of 2 magnitudes on the night of 2017 April 4. The sharp increase in brightness offered a rare opportunity to measure the isotopic ratios of the light elements in the coma of this comet. We obtained two high-resolution spectra of C/2015 ER61 with UVES/VLT on the nights of 2017 April 13 and 17. At the time of our observations, the comet was fading gradually following the outburst. We measured the nitrogen and carbon isotopic ratios from the CN violet (0, 0) band and found that C-12/C-13 = 100 +/- 15, N-14/N-15 = 130 +/- 15. In addition, we determined the N-14/N-15 ratio from four pairs of NH2 isotopolog lines and measured N-14/N-15 = 140 +/- 28. The measured isotopic ratios of C/2015 ER61 do not deviate significantly from those of other comets.
项目资助者: European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme(299.C-5006(A)) ; Belgian Fund for Scientific Research (Fond National de la Recherche Scientifique, FNRS)(FRFC 2.5.594.09) ; JSPS(15J10864) ; NSF(AST-1617015)
语种: 英语
原文出处: 查看原文
ISSN号: 1432-0746
文章类型: Article
WOS标题词: Science & Technology ; Physical Sciences
研究领域[WOS]: Astronomy & Astrophysics
类目[WOS]: Astronomy & Astrophysics
关键词[WOS]: SOLAR-SYSTEM ; ABUNDANCES ; NITROGEN ; BELT
WOS记录号: WOS:000429206100001
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ynao.ac.cn/handle/114a53/12102
Appears in Collections:其他_期刊论文

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作者单位: 1.European Southern Observatory, Alonso de Còrdova 3107, Vitacura Casilla, Santiago; 19001, Chile
2.Yunnan Observatories, Chinese Academy of Sciences, Kunming; 650011, China
3.Institut d'Astrophysique et de Géophysique, Université de Liège, 19c Allée du Six Août, Liège; 4000, Belgium
4.National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
5.Institute of Astronomy, University of Hawaii, 2680 Woodlawn Dr, Honolulu; HI; 96822, United States

Recommended Citation:
Yang B,Hutsemékers, Damien,Shinnaka, Yoshiharu,et al. Isotopic ratios in outbursting comet C/2015 ER61[J]. ASTRONOMY & ASTROPHYSICS,2018,609.
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