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dc.contributor.author
Gomes Junior, A. R.
dc.contributor.author
Assafin, M.
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Braga Ribas, F.
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Benedetti Rossi, G.
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Morgado, B. E.
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Camargo, J. I. B.
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Vieira Martins, R.
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Desmars, J.
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Sicardy, B.
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Barry, T.
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Campbell White, J.
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Fernandez Lajus, Eduardo Eusebio
dc.contributor.author
Giles, D.
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Hanna, W.
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Hayamizu, T.
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Hirose, T.
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De Horta, A.
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Horvat, R.
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Hosoi, K.
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Jehin, E.
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Kerr, S.
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Machado, D. I.
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Mammana, Luis Antonio
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Maybour, D.
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Owada, M.
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Rahvar, S.
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Snodgrass, C.
dc.date.available
2021-11-02T17:44:29Z
dc.date.issued
2020-02
dc.identifier.citation
Gomes Junior, A. R.; Assafin, M.; Braga Ribas, F.; Benedetti Rossi, G.; Morgado, B. E.; et al.; The first observed stellar occultations by the irregular satellite Phoebe (Saturn IX) and improved rotational period; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 492; 1; 2-2020; 770-781
dc.identifier.issn
0035-8711
dc.identifier.uri
http://hdl.handle.net/11336/145763
dc.description.abstract
We report six stellar occultations by Phoebe (Saturn IX), an irregular satellite of Saturn, obtained between mid-2017 and mid-2019. The 2017 July 6 event was the first stellar occultation by an irregular satellite ever observed. The occultation chords were compared to a 3D shape model of the satellite obtained from Cassini observations. The rotation period available in the literature led to a sub-observer point at themoment of the observed occultations where the chords could not fit the 3D model. A procedure was developed to identify the correct sub-observer longitude. It allowed us to obtain the rotation period with improved precision compared to the currently known value from literature. We show that the difference between the observed and the predicted sub-observer longitude suggests two possible solutions for the rotation period. By comparing these values with recently observed rotational light curves and single-chord stellar occultations, we can identify the best solution for Phoebe's rotational period as 9.27365 ± 0.00002 h. From the stellar occultations, we also obtained six geocentric astrometric positions in the ICRS as realized by the Gaia DR2 with uncertainties at the 1-mas level.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Oxford University Press
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
OCCULTATIONS
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PLANETS AND SATELLITES: INDIVIDUAL: PHOEBE
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
The first observed stellar occultations by the irregular satellite Phoebe (Saturn IX) and improved rotational period
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-09-06T17:50:49Z
dc.identifier.eissn
1365-2966
dc.journal.volume
492
dc.journal.number
1
dc.journal.pagination
770-781
dc.journal.pais
Reino Unido
dc.journal.ciudad
Oxford
dc.description.fil
Fil: Gomes Junior, A. R.. Universidade de Sao Paulo; Brasil. Universidade Federal do Rio de Janeiro; Brasil. Laboratório Interinstitucional de e-Astronomia; Brasil
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Fil: Assafin, M.. Universidade Federal do Rio de Janeiro; Brasil. Laboratório Interinstitucional de e-Astronomia; Brasil
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Fil: Braga Ribas, F.. Laboratório Interinstitucional de e-Astronomia; Brasil. Universidad Tecnológica Federal de Paraná; Brasil. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
dc.description.fil
Fil: Benedetti Rossi, G.. Laboratório Interinstitucional de e-Astronomia; Brasil. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
dc.description.fil
Fil: Morgado, B. E.. Laboratório Interinstitucional de e-Astronomia; Brasil. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
dc.description.fil
Fil: Camargo, J. I. B.. Laboratório Interinstitucional de e-Astronomia; Brasil. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
dc.description.fil
Fil: Vieira Martins, R.. Universidade Federal do Rio de Janeiro; Brasil. Laboratório Interinstitucional de e-Astronomia; Brasil. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
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Fil: Desmars, J.. Institut Poytechnique des Sciences Avancées; Francia. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia. Sorbonne University; Francia
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Fil: Sicardy, B.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
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Fil: Barry, T.. University of Western Sydney; Australia
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Fil: Campbell White, J.. University of Dundee; Reino Unido
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Fil: Fernandez Lajus, Eduardo Eusebio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
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Fil: Giles, D.. University of Western Sydney; Australia
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Fil: Hanna, W.. International Occultation Timing Association; Estados Unidos
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Fil: Hayamizu, T.. Japan Occultation Information Network; Japón
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Fil: Hirose, T.. Japan Occultation Information Network; Japón
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Fil: De Horta, A.. University of Western Sydney; Australia
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Fil: Horvat, R.. University of Western Sydney; Australia
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Fil: Hosoi, K.. Japan Occultation Information Network; Japón
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Fil: Jehin, E.. Université de Liège; Bélgica
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Fil: Kerr, S.. Occultation Section of the Royal Astronomical; Australia. Astronomical Association of Queensland; Australia
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Fil: Machado, D. I.. Universidade Estadual Do Oeste Do Pará; Brasil. Fundação Parque Tecnológico Itaipu; Brasil
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Fil: Mammana, Luis Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "El Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico "El Leoncito". Universidad Nacional de la Plata. Complejo Astronómico "El Leoncito". Universidad Nacional de San Juan. Complejo Astronómico "El Leoncito"; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
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Fil: Maybour, D.. University of Western Sydney; Australia
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Fil: Owada, M.. Japan Occultation Information Network; Japón
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Fil: Rahvar, S.. Sharif University Of Technology; Irán
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Fil: Snodgrass, C.. University of Edinburgh; Reino Unido
dc.journal.title
Monthly Notices of the Royal Astronomical Society
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/492/1/770/5681400
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/mnras/stz3463
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