R
Rafael Sfair
Researcher at Sao Paulo State University
Publications - 54
Citations - 654
Rafael Sfair is an academic researcher from Sao Paulo State University. The author has contributed to research in topics: Ring (chemistry) & Planet. The author has an hindex of 11, co-authored 45 publications receiving 552 citations.
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Journal ArticleDOI
A ring system detected around the centaur (10199) chariklo
Felipe Braga-Ribas,Bruno Sicardy,Jose Luis Ortiz,Colin Snodgrass,F. Roques,R. Vieira-Martins,R. Vieira-Martins,R. Vieira-Martins,Julio Camargo,Marcelo Assafin,Rene Duffard,Emmanuel Jehin,Joe Pollock,Rodrigo Leiva,Marcelo Emilio,D. I. Machado,C. Colazo,E. Lellouch,Jesper Skottfelt,Jesper Skottfelt,Michaël Gillon,N. Ligier,L. Maquet,G. Benedetti-Rossi,A. Ramos Gomes,Pierre Kervella,Hektor Monteiro,Rafael Sfair,M. El Moutamid,M. El Moutamid,Gonzalo Tancredi,J. Spagnotto,Alain Maury,Nicolás Morales,Ricardo Gil-Hutton,S. Roland,A. Ceretta,Shenghong Gu,Xuefeng Wang,Kasper Harpsøe,Kasper Harpsøe,Markus Rabus,Markus Rabus,Jean Manfroid,Cyrielle Opitom,L. Vanzi,L. Mehret,L. Lorenzini,E. M. Schneiter,R. Melia,J. Lecacheux,François Colas,Frédéric Vachier,Thomas Widemann,L. Almenares,R. G. Sandness,F. Char,V. Perez,P. Lemos,Nicolás Marín Martínez,U. G. Jørgensen,U. G. Jørgensen,Martin Dominik,Fernando Roig,Daniel E. Reichart,Aaron P. LaCluyze,J. B. Haislip,K. M. Ivarsen,J. P. Moore,N. R. Frank,D. G. Lambas,D. G. Lambas +71 more
TL;DR: Observations of a multichord stellar occultation 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.
Journal ArticleDOI
Stable regions around Pluto
Journal ArticleDOI
The brightening of Saturn's F ring
Robert S. French,Mark R. Showalter,Rafael Sfair,Carlos Arguelles,M. Pajuelo,Patricio Becerra,Matthew M. Hedman,Philip D. Nicholson +7 more
TL;DR: In this paper, the authors performed photometric measurements of more than 4800 images of Saturn's F ring taken over a 5-year period with Cassini's Narrow Angle Camera, and applied a photometric model based on single-scattering in the presence of shadowing and obscuration.
Journal ArticleDOI
The rings of chariklo under close encounters with the giant planets
TL;DR: In this article, the existence of a well-defined system of rings around a body in such a perturbed orbital region poses an interesting new problem: are the rings of Chariklo stable when perturbed by close gravitational encounters with the giant planets?
Journal ArticleDOI
Gravitational effects of Nix and Hydra in the external region of the Pluto–Charon system
TL;DR: Weaver et al. as mentioned in this paper analyzed the dynamical structure of the external region of the Pluto-Charon binary system by numerically simulating a sample of particles under the gravitational effects of Pluto, Charon, Nix and Hydra.