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A ring system detected around the Centaur (10199) Chariklo
Braga-Ribas, F.; Sicardy, B.; Ortiz, J.L.; Snodgrass, C.; Roques, F.; Vieira-Martins, R.; Camargo, J.I.B.; Assafin, M.; Duffard, R.; Jehin, E.; Pollock, J.; Leiva, R.; Emilio, M.; MacHado, D.I.; Colazo, C.; Lellouch, E.; Skottfelt, J.; Gillon, M.; Ligier, N.; Maquet, L.; Benedetti-Rossi, G.; Gomes, A. Ramos; Kervella, P.; Monteiro, H.; Sfair, R.; Moutamid, M. E; Tancredi, G.; Spagnotto, J.; Maury, A.; Morales, N.; Gil-Hutton, R.; Roland, S.; Ceretta, A.; Gu SH(顾盛宏); Wang XB(王晓彬); Harpsøe, K.; Rabus, M.; Manfroid, J.; Opitom, C.; Vanzi, L.; Mehret, L.; Lorenzini, L.; Schneiter, E.M.; Melia, R.; Lecacheux, J.; Colas, F.; Vachier, F.; Widemann, T.; Almenares, L.; Sandness, R.G.; Char, F.; Perez, V.; Lemos, P.; Martinez, N.; Jørgensen, U.G.; Dominik, M.; Roig, F.; Reichart, D.E.; Lacluyze, A.P.; Haislip, J.B.; Ivarsen, K.M.; Moore, J.P.; Frank, N.R.; Lambas, D.G.; Braga-Ribas, F (reprint author), MCTI, Observatorio Nacl, Rua Gen Jose Cristino 77, BR-20921400 Rio De Janeiro, Brazil.
发表期刊NATURE
2014-04-03
卷号508期号:7494页码:72-75
DOI10.1038/nature13155
产权排序第25完成单位
收录类别SCI ; EI
摘要Hitherto, rings have been found exclusively around the four giant planets in the Solar System(1). Rings are natural laboratories in which to study dynamical processes analogous to those that take place during the formation of planetary systems and galaxies. Their presence also tells us about the origin and evolution of the body they encircle. Here we report observations of a multichord stellar occultation that revealed the presence of a ring system around (10199) Chariklo, which is a Centaur-that is, one of a class of small objects orbiting primarily between Jupiter and Neptune-with an equivalent radius of 124 +/- 9 kilometres (ref. 2). There are two dense rings, with respective widths of about 7 and 3 kilometres, optical depths of 0.4 and 0.06, and orbital radii of 391 and 405 kilometres. The present orientation of the ring is consistent with an edge-on geometry in 2008, which provides a simple explanation for the dimming(3) of the Chariklo system between 1997 and 2008, and for the gradual disappearance of ice and other absorption features in its spectrum over the same period(4,5). This implies that the rings are partly composed of water ice. They may be the remnants of a debris disk, possibly confined by embedded, kilometre-sized satellites.
项目资助者LIneA (Laboratorio Interinstitucional de e-Astronomia) of CNPq, Brazil [150541/2013-9] ; Danish Natural Science Research Council (FNU) ; Centre for Star and Planet Formation (StarPlan) ; French grant 'Beyond Neptune II' ; Spanish AYA grants ; FEDER funds ; National Natural Science Foundation of China [10873031, 11073051] ; Belgian Fund for Scientific Research (FRS-FNRS) ; Swiss National Science Foundation (SNF) ; Belgian FNRS ; CNPq [302657/2010-0, 482080/2009-4 478318/2007-3, 304124/2007-9] ; European Union [268421] ; FONDECYT [3120097] ; National Aeronautics and Space Administration (NASA) ; National Science Foundation (NSF) ; NASA ; NSF [0959447, 1009052, 1211782] ; CONICYT [Anillo ACT-86]
语种英语
学科领域Science & Technology - Other Topics
文章类型Article
ISSN0028-0836
URL查看原文
WOS记录号WOS:000333609900044
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
关键词[WOS]TRANS-NEPTUNIAN OBJECTS ; STELLAR OCCULTATION ; ALBEDO ; PHOTOMETRY ; EVOLUTION ; CHIRON ; REGION ; ORIGIN
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6804
专题系外行星研究组
通讯作者Braga-Ribas, F (reprint author), MCTI, Observatorio Nacl, Rua Gen Jose Cristino 77, BR-20921400 Rio De Janeiro, Brazil.
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Braga-Ribas, F.,Sicardy, B.,Ortiz, J.L.,et al. A ring system detected around the Centaur (10199) Chariklo[J]. NATURE,2014,508(7494):72-75.
APA Braga-Ribas, F..,Sicardy, B..,Ortiz, J.L..,Snodgrass, C..,Roques, F..,...&Braga-Ribas, F .(2014).A ring system detected around the Centaur (10199) Chariklo.NATURE,508(7494),72-75.
MLA Braga-Ribas, F.,et al."A ring system detected around the Centaur (10199) Chariklo".NATURE 508.7494(2014):72-75.
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