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Constraining the nature of the possible extrasolar PDS110b ring system
[article]
2021
arXiv
pre-print
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Pinheiro and Rafael Sfair: Constraining the nature of the possible extrasolar PDS110b ring system ...
arXiv:2107.05179v1
fatcat:yd25xgoj25b6plgrktpysjg2jy
The brightening of Saturn's F ring
2012
Icarus (New York, N.Y. 1962)
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Image photometry reveals that the F ring is approximately twice as bright during the Cassini tour as it was during the Voyager flybys of 1980 and 1981. It is also three times as wide and has a higher integrated optical depth. We have performed photometric measurements of more than 4,800 images of Saturn's F ring taken over a five-year period with Cassini's Narrow Angle Camera. We show that the ring is not optically thin in many observing geometries and apply a photometric model based on
doi:10.1016/j.icarus.2012.02.020
fatcat:vbciu73dfjgindp3t6n5zee73e
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... cattering in the presence of shadowing and obscuration, deriving a mean effective optical depth tau = 0.033. Stellar occultation data from Voyager PPS and Cassini VIMS validate both the optical depth and the width measurements. In contrast to this decades-scale change, the baseline properties of the F ring have not changed significantly from 2004 to 2009. However, we have investigated one major, bright feature that appeared in the ring in late 2006. This transient feature increased the ring's overall mean brightness by 84% and decayed with a half-life of 91 days.
Particles Co-orbital to Janus and to Epimetheus: A Firefly Planetary Ring
2017
Astrophysical Journal
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The combination of these two parameters leads to the ring's steadystate mass (Dikarev et al. 2006; Sfair & Giuliatti Winter 2012) . ...
As we are dealing with μm-sized particles, the force due to the solar radiation pressure was also included in the numerical simulations (Sfair et al. 2009 ). ...
doi:10.3847/1538-4357/aa9c7f
fatcat:pm6aqjfiorhmxlzba7umppo7ja
Agradecimientos : diciembre de 1967
1967
Boletín Cultural y Bibliográfico
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Varios: Rafael Bernal Jimén ez ...... . ... . Eduardo Camacho Guizado ...... . Augusto E spinosa Valderrama ... . Rafael Ortiz González .. .. ...... . ...
Rafael Colmenares del Castillo . . .
Guía policiva -2 Ejemps . -2~ E d. -
Antonio Bastidas Villota ....... .
Rafael Colmenares del Castillo . .. ...
doaj:bbcb099c77724880b56a647cbecb6a2a
fatcat:6hoiaa3op5cqjeb5rkqnbnolby
Comparação de softwares de análise de imagem para a determinação da área foliar / Comparison of image analysis softwares for the determination of leaf area
2018
Zenodo
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., 2015; MUSCARELLA; URIARTE, 2016; SFAIR; ROSADO; TABARELLI, 2016) , bem como para a reconstrução de paisagens paleobotânicas (ROYER et al., 2005) . ...
doi:10.5281/zenodo.2542855
fatcat:2ibxuhhnpbc43gys66v7v3b2pe
Últimas adquisiciones : agosto de 1966
1966
Boletín Cultural y Bibliográfico
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Gonzalo Jirnénez, Rafael. R34ol .. . Naderías metahistóricas; pr ecedidas de una efímera selección de poesías patrióticas. Bogotá, 1965. ...
Calila y Dimna; traducción diTecta del árabe del texto de Abda-
llah Ibn Almokaffa por Antonio Chalita Sfair.
Ibagué, Ed. Tolima,
[1965].
230 p., 1 h.
l.
16 cm.
l. ...
doaj:32bc960c701e4eaa979eeb26f060673c
fatcat:l4of4b6jajejvgzmocbkspj54y
Principales causas de la morosidad en la jurisdicción laboral
2006
Prolegómenos
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PARDO RUEDA Rafael. La historia de las guerras, Editorial Vergara, primera edición, 2004. ...
Versión Calita Sfair. Editorial Panmamericana. 14ª. edición, Bogotá, Colombia, p. 179. Bogotá D. C. Colombia -Volumen IX. -No. 18. -Julio -Diciembre 2006. -ISSN 0121-182X. ...
doi:10.18359/prole.2577
fatcat:5w2igg7bkjcijnxrifwp45d7pa
OUP accepted manuscript
2019
Monthly notices of the Royal Astronomical Society
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2019 pre-print arXiv:1902.03363v1 fatcat:feuqkbgqtvgx5ghcjsz52jefhu
The authors would like to thank Ernesto Vieira Neto for some criticism that improved the work, and Silvia Giuliatti Winter and Rafael Sfair for fruitful discussions. ...
doi:10.1093/mnras/stz246
fatcat:6w5kexnv5fg37c6o3ooyxxisyi
Formation of the Janus-Epimetheus system through collisions
2015
Astronomy and Astrophysics
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We thank Rafael Sfair for providing file storage for our results on short notice. Othon C. Winter thanks FABESP (proc. 2011/08171-3) and CNPq. ...
doi:10.1051/0004-6361/201425543
fatcat:4rui4oqof5efxmnoq6e6av33mq
Ultimas adquisiciones: Obras colombianas y extranjeras enero de 1967
1967
Boletín Cultural y Bibliográfico
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Botánica;
Rafael Salord
Galiano . . .
580
1 . Zoologia.
214 -
24 cm.
690
V4 5~t
References : p . 741-788 .
l. Fisiología comparada. ...
Calila y Dimma; traducción dir ecta del árabe del texto de Abdallah
Ibn Almokaffa por Antio Chalita Sfair.
!bagué, Ed. Tolima, [1965 ?]
2 v .
íront. ( ret.). ls .
16 cm.
x v, 155 p. ...
doaj:3c6859c3f42b4e8681e2aa6a022eb7bd
fatcat:xtkuv5kyeranlg2z3bg6ucfjz4
Altímetro Laser para a Missão Espacial Brasileira ASTER – ALR: modelagens e Simulações para Criação do Software a Embarcar na Unidade de Controle e Processamento de Sinais do Instrumento
2013
unpublished
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Sandonato ; Rafael Sfair THE ASTER MISSION: EXPLORING FOR THE FIRST TIME A TRIPLE SYSTEM ASTEROID. ...
doi:10.5540/03.2013.001.01.0173
fatcat:cagbybwwcvdsfkfjmr5fgagzha
Dynamical effects on the classical Kuiper Belt during the excited-Neptune model
[article]
2018
arXiv
pre-print
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R.R.S also thanks Rafael Sfair for turning possible our simulations on the cluster of computers that belongs to São Paulo State University. ...
arXiv:1808.02146v1
fatcat:i24das4smrcbbdlcslqinnz3mu
O leitor da crítica de cinema: observações sobre um agente receptivo-ativo
2016
Verso e Reverso
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Outra leitora, Julia Caram Sfair, tenta sustentar, por sua vez, a tese de que Tarantino seria "um diretor extremamente feminista" (Villaça, 2015, s.p.) , destacando as posições e atitudes da per-O leitor ...
doi:10.4013/ver.2016.31.76.07
fatcat:6nstowigubf6jc7qq76rdwgd6m
Dynamics of the dust rings and satellites of Uranus and of the Saturn's F-ring
[article]
2013
arXiv
pre-print
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Rafael Sfair
NASCIMENTO 30.10.1984 -CURITIBA / PR
FILIAÇÃO
Osni Bento de Oliveira
Ana Rita de Oliveira
FORMAÇÃO
2001 -2004
Bacharelado e Licenciatura em Física
Departamento de Física
UFPR ...
Sfair, C. Aguelles, M. Pajuelo, P. Becerra, M. M. Hedman & P. D. ...
arXiv:1307.3230v1
fatcat:6qbi7f3x7vhbtmjczo7qbtqfni
Earth-size planet formation in the habitable zone of circumbinary stars
[article]
2020
pre-print
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We also thank Paul Mason who helped us with his code for calculating habitable zones and Rafael Sfair with all computational support. ...
Using an adaptation made by us [called MINOR-MERCURY package (Amarante, Winter & Sfair 2019)] of the numerical integrator of n-body MERCURY (Chambers 1999 ) based on Chambers et al. (2002) , with the ...
doi:10.1093/mnras/staa757
arXiv:2003.11682v1
fatcat:agrcdvw7mvagbnnx2et4ngmvam
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