New limits to CO outgassing in Centaurs
文献类型：期刊论文
| 作者 | Drahus, Michal1; Yang B(杨彬)2,3 ; Lis, Dariusz C.4,5; Jewitt, David6,7
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2017-07-01 |
| 卷号 | 468期号:3页码:2897-2909 |
| 关键词 | comets: general Kuiper belt: general minor planets, asteroids:individual: 315898 minor planets, asteroids: individual: 342842 planets asteroids: individual: 382004 radio lines: general |
| ISSN号 | 0035-8711 |
| 产权排序 | 第3完成单位 |
| 通讯作者 | Drahus, Michal(Jagiellonian Univ, Astron Observ, Ul Orla 171, PL-30244 Krakow, Poland) |
| 英文摘要 | Centaurs are small Solar system objects orbiting between Jupiter and Neptune. They are widely believed to be escapees from the trans-Neptunian region on their way to become Jupiter-family comets. Indeed, some Centaurs exhibit the characteristic cometary appearance. The sublimation of carbon monoxide has been proposed as a driver of activity in distant comets, but no strong detection of gaseous CO in a Centaur other than 29P/Schwassmann-Wachmann 1 has been reported to date. Here we report the results of a deep search for CO outgassing in three Centaurs: (315898), (342842), and (382004). Our survey was carried out using the Caltech Submillimeter Observatory on nine nights in late 2011. The targeted rotational line J(2-1) of CO is undetected in all three objects in spite of high instrumental sensitivity. We find the model-dependent 3 sigma upper limits to the CO production rate of 2.13 x 10(27) molecules s(-1) for (315898), 1.32 x 10(27) molecules s(-1) for (342842), and 1.17 x 10(27) molecules s(-1) for (382004), which are among the most sensitive obtained to date. These upper limits are consistently analysed in the context of published CO data of 14 Centaurs and one well-observed long-period comet, C/1995 O1 (Hale-Bopp), and support an earlier suggestion that the surfaces of most Centaurs are not dominated by exposed CO ice. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | 天文学 |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | COMET HALE-BOPP ; KUIPER-BELT OBJECTS ; CARBON-MONOXIDE ; 103P/HARTLEY 2 ; 29P/SCHWASSMANN-WACHMANN 1 ; OUTBURST ACTIVITY ; HERSCHEL-PACS ; NUCLEI ; SPECTROSCOPY ; TEMPERATURE |
| 收录类别 | SCI |
| 原文出处 | https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stw2227 |
| 语种 | 英语 |
| WOS记录号 | WOS:000402808700032 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/10088]  |
| 专题 | 云南天文台_其他 |
| 作者单位 | 1.Astronomical Observatory, Jagiellonian University, ul. Orla 171, 30-244 Krak´ow, Poland 2.European Southern Observatory, Alonso de C´ordova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile 3.Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, Yunnan, China 4.LERMA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universit´es, UPMC Univ. Paris 06, 61 Avenue de l’Observatoire, 75014 Paris, France 5.Division of Physics, Mathematics and Astronomy, California Institute of Technology, 1200 E California Blvd, Pasadena, CA 91125, USA 6.Department of Earth, Planetary and Space Sciences, University of California at Los Angeles, 595 Charles E Young Dr E, Los Angeles, CA 90095, USA 7.Department of Physics and Astronomy, University of California at Los Angeles, 475 Portola Plaza, Los Angeles, CA 90095, USA |
| 推荐引用方式 GB/T 7714 | Drahus, Michal,Yang B,Lis, Dariusz C.,et al. New limits to CO outgassing in Centaurs[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,468(3):2897-2909. |
| APA | Drahus, Michal,Yang B,Lis, Dariusz C.,&Jewitt, David.(2017).New limits to CO outgassing in Centaurs.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,468(3),2897-2909. |
| MLA | Drahus, Michal,et al."New limits to CO outgassing in Centaurs".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 468.3(2017):2897-2909. |
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来源：云南天文台
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