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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The Brightening of Saturn's F Ring
Mark R. Showalter,Robert S. French,Rafael Sfair,C. Aguelles,M. Pajuelo,Patricio Becerra,Matthew M. Hedman,P. D. Nicholson +7 more
Journal ArticleDOI
A dense ring of the trans-Neptunian object Quaoar outside its Roche limit
B. E. Morgado,Bruno Sicardy,Felipe Braga-Ribas,Jose Luis Ortiz,Heikki Salo,Frédéric Vachier,Josselin Desmars,C. L. Pereira,Pablo Santos-Sanz,Rafael Sfair,T. de Santana,Marcelo Assafin,Roberto Vieira-Martins,A. R. Gomes-Júnior,G. Margoti,V. S. Dhillon,Estela Fernández-Valenzuela,James K. Broughton,James Bradshaw,R. Langersek,G. Benedetti-Rossi,D. Souami,Bryan J. Holler,Mike Kretlow,R. C. Boufleur,Julio Camargo,Rene Duffard,Wolfgang Beisker,N. Morales,Jean Lecacheux,F. L. Rommel,D. Herald,Willy Benz,Emmanuel Jehin,Felix Jankowsky,Tom Marsh,S. P. Littlefair,G. Bruno,Isabella Pagano,Alexis Brandeker,Andrew Collier-Cameron,H. G. Floren,Nathan Hara,G. Olofsson,Thomas G. Wilson,Zouhair Benkhaldoun,R. Busuttil,Artem Burdanov,Marin Ferrais,D. Gault,Michael Gill,W. Hanna,S. Kerr,Ulrich Kolb,P.J. Nosworthy,Daniel Sebastian,Colin Snodgrass,J.-P. Teng,Julien de Wit +58 more
TL;DR: In this article , an inhomogeneous ring around the trans-Neptunian body (50000) Quaoar has been observed, which is well outside the classical Roche limit, indicating that this limit does not always determine where ring material can survive.
The Brightening of Saturn's F Ring
Mark R. Showalter,Robert S. French,Rafael Sfair,Carlos Arguelles,M. Pajuelo,Patricio Becerra,Matthew M. Hedman,P. D. Nicholson +7 more
Journal ArticleDOI
Milliarcsecond Astrometry for the Galilean Moons Using Stellar Occultations
B. E. Morgado,A. R. Gomes-J'unior,Felipe Braga-Ribas,Roberto Vieira-Martins,Josselin Desmars,Valéry Lainey,Emiliano D'Aversa,Deborah Dunham,J. Moore,Kevin Baillie,D. Herald,Marcelo Assafin,Bruno Sicardy,Shinko Aoki,Jerry Bardecker,J. Barton,T. Blank,David Bruns,N. Carlson,R. W. Carlson,Kevin Cobble,J. B. Dunham,D. Eisfeldt,Marcelo Emilio,César Jacques,Tobias C. Hinse,Y. G. Kim,M. Malacarne,P. Maley,Anaëlle Maury,E. Meza,Fabrizio Oliva,G. S. Orton,C. L. Pereira,M. L. Person,Christina Plainaki,Rafael Sfair,Giuseppe Sindoni,M. Smith,Eric Sussenbach,P. Stuart,Jan-Willem Vrolijk,Othon C. Winter +42 more
TL;DR: In this paper , the authors used the known 3D shape of the occulting satellite and fit its center of figure to obtain the estimated 3D positions with uncertainties in the milliarcsecond level.
Dynamical Environment and Surface Characteristics of Asteroid (16) Psyche
TL;DR: In this article, the location and linear stability of the equilibrium points were found and the stability of these points were confirmed by performing numerical simulations of massless particles around the asteroid, which also showed an asymmetry in the size of the stable regions.