The 2014–2015 Brazilian mutual phenomena campaign for the Jovian satellites and improved results for the 2009 events
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.pss.2019.104736 http://hdl.handle.net/11449/190646 |
Resumo: | Progress in astrometry and orbital modelling of planetary moons in the last decade enabled better determinations of their orbits. These studies need accurate positions spread over extended periods. We present the results of the 2014–2015 Brazilian campaign for 40 mutual events from 47 observed light curves by the Galilean satellites plus one eclipse of Amalthea by Ganymede. We also reanalysed and updated results for 25 mutual events observed in the 2009 campaign. All telescopes were equipped with narrow-band filters centred at 889 nm with a width of 15 nm to eliminate the scattered light from Jupiter. The albedos’ ratio was determined using images before and after each event. We simulated images of moons, umbra, and penumbra in the sky plane, and integrated their fluxes to compute albedos, simulate light curves and fit them to the observed ones using a chi-square fitting procedure. For that, we used the complete version of the Oren-Nayer reflectance model. The relative satellite positions mean uncertainty was 11.2 mas (~35 km) and 10.1 mas (~31 km) for the 2014–2015 and 2009 campaigns respectively. The simulated and observed ASCII light curve files are freely available in electronic form at the Natural Satellites DataBase (NSDB). The 40/25 mutual events from our 2014–2015/2009 campaigns represent a significant contribution of 17%/15% in comparison with the PHEMU campaigns lead by the IMCCE. Besides that, our result for the eclipse of Amalthea is only the 4th such measurement ever published after the three ones observed by the 2014–2015 international PHEMU campaign. Our results are suitable for new orbital/ephemeris determinations for the Galilean moons and Amalthea. |
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Repositório Institucional da UNESP |
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The 2014–2015 Brazilian mutual phenomena campaign for the Jovian satellites and improved results for the 2009 eventsAmaltheaAstrometryCallistoEuropaGanymedeMethods: data analysisPlanets and satellites: individual: IoProgress in astrometry and orbital modelling of planetary moons in the last decade enabled better determinations of their orbits. These studies need accurate positions spread over extended periods. We present the results of the 2014–2015 Brazilian campaign for 40 mutual events from 47 observed light curves by the Galilean satellites plus one eclipse of Amalthea by Ganymede. We also reanalysed and updated results for 25 mutual events observed in the 2009 campaign. All telescopes were equipped with narrow-band filters centred at 889 nm with a width of 15 nm to eliminate the scattered light from Jupiter. The albedos’ ratio was determined using images before and after each event. We simulated images of moons, umbra, and penumbra in the sky plane, and integrated their fluxes to compute albedos, simulate light curves and fit them to the observed ones using a chi-square fitting procedure. For that, we used the complete version of the Oren-Nayer reflectance model. The relative satellite positions mean uncertainty was 11.2 mas (~35 km) and 10.1 mas (~31 km) for the 2014–2015 and 2009 campaigns respectively. The simulated and observed ASCII light curve files are freely available in electronic form at the Natural Satellites DataBase (NSDB). The 40/25 mutual events from our 2014–2015/2009 campaigns represent a significant contribution of 17%/15% in comparison with the PHEMU campaigns lead by the IMCCE. Besides that, our result for the eclipse of Amalthea is only the 4th such measurement ever published after the three ones observed by the 2014–2015 international PHEMU campaign. Our results are suitable for new orbital/ephemeris determinations for the Galilean moons and Amalthea.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)Observatório Nacional/MCTIC, R. General José Cristino 77Laboratório Interinstitucional de e-Astronomia - LIneA and INCT do e-Universo, Rua Gal. José Cristino 77Observatório do Valongo/UFRJ, Ladeira Pedro Antonio 43Escola SESC de Ensino Médio, Avenida Ayrton Senna, 5677Universidade Estadual do Oeste do Paraná (Unioeste), Avenida Tarquínio Joslin dos Santos 1300Polo Astronômico Casimiro Montenegro Filho/FPTI-BR, Avenida Tancredo Neves 6731Universidade Federal do Espírito Santo, Av. Fernando Ferrari 514UNESP - São Paulo State University Grupo de Dinâmica Orbital e Planetologia, CEP 12516-410Federal University of Technology - Paraná (UTFPR/DAFIS), Av. Sete de Setembro, 3165UNESP - São Paulo State University Grupo de Dinâmica Orbital e Planetologia, CEP 12516-410CNPq: 310683/2017-3CNPq: 427700/2018-3CNPq: 473002/2013-2FAPERJ: E-26/111.488/2013FAPERJ: E-26/203.026/2015FAPERJ: PAPDRJ-45/2013Observatório Nacional/MCTICLaboratório Interinstitucional de e-Astronomia - LIneA and INCT do e-UniversoUniversidade Federal do Rio de Janeiro (UFRJ)Escola SESC de Ensino MédioUniversidade Estadual do Oeste do Paraná (Unioeste)Polo Astronômico Casimiro Montenegro Filho/FPTI-BRUniversidade Federal do Espírito Santo (UFES)Universidade Estadual Paulista (Unesp)Federal University of Technology - Paraná (UTFPR/DAFIS)Morgado, B.Vieira-Martins, R.Assafin, M.Dias-Oliveira, A.Machado, D. I.Camargo, J. I.B.Malacarne, M.Sfair, R. [UNESP]Winter, O. C. [UNESP]Braga-Ribas, F.Benedetti-Rossi, G.Boldrin, L. A. [UNESP]Camargo, B. C.B. [UNESP]Gaspar, H. S. [UNESP]Gomes-Júnior, A. R. [UNESP]Miranda, J. O.de Santana, T. [UNESP]Trabuco, L. L.2019-10-06T17:20:09Z2019-10-06T17:20:09Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.pss.2019.104736Planetary and Space Science.0032-0633http://hdl.handle.net/11449/19064610.1016/j.pss.2019.1047362-s2.0-85072259511Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPlanetary and Space Scienceinfo:eu-repo/semantics/openAccess2024-07-02T14:29:20Zoai:repositorio.unesp.br:11449/190646Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:49:17.984529Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
The 2014–2015 Brazilian mutual phenomena campaign for the Jovian satellites and improved results for the 2009 events |
title |
The 2014–2015 Brazilian mutual phenomena campaign for the Jovian satellites and improved results for the 2009 events |
spellingShingle |
The 2014–2015 Brazilian mutual phenomena campaign for the Jovian satellites and improved results for the 2009 events Morgado, B. Amalthea Astrometry Callisto Europa Ganymede Methods: data analysis Planets and satellites: individual: Io |
title_short |
The 2014–2015 Brazilian mutual phenomena campaign for the Jovian satellites and improved results for the 2009 events |
title_full |
The 2014–2015 Brazilian mutual phenomena campaign for the Jovian satellites and improved results for the 2009 events |
title_fullStr |
The 2014–2015 Brazilian mutual phenomena campaign for the Jovian satellites and improved results for the 2009 events |
title_full_unstemmed |
The 2014–2015 Brazilian mutual phenomena campaign for the Jovian satellites and improved results for the 2009 events |
title_sort |
The 2014–2015 Brazilian mutual phenomena campaign for the Jovian satellites and improved results for the 2009 events |
author |
Morgado, B. |
author_facet |
Morgado, B. Vieira-Martins, R. Assafin, M. Dias-Oliveira, A. Machado, D. I. Camargo, J. I.B. Malacarne, M. Sfair, R. [UNESP] Winter, O. C. [UNESP] Braga-Ribas, F. Benedetti-Rossi, G. Boldrin, L. A. [UNESP] Camargo, B. C.B. [UNESP] Gaspar, H. S. [UNESP] Gomes-Júnior, A. R. [UNESP] Miranda, J. O. de Santana, T. [UNESP] Trabuco, L. L. |
author_role |
author |
author2 |
Vieira-Martins, R. Assafin, M. Dias-Oliveira, A. Machado, D. I. Camargo, J. I.B. Malacarne, M. Sfair, R. [UNESP] Winter, O. C. [UNESP] Braga-Ribas, F. Benedetti-Rossi, G. Boldrin, L. A. [UNESP] Camargo, B. C.B. [UNESP] Gaspar, H. S. [UNESP] Gomes-Júnior, A. R. [UNESP] Miranda, J. O. de Santana, T. [UNESP] Trabuco, L. L. |
author2_role |
author author author author author author author author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Observatório Nacional/MCTIC Laboratório Interinstitucional de e-Astronomia - LIneA and INCT do e-Universo Universidade Federal do Rio de Janeiro (UFRJ) Escola SESC de Ensino Médio Universidade Estadual do Oeste do Paraná (Unioeste) Polo Astronômico Casimiro Montenegro Filho/FPTI-BR Universidade Federal do Espírito Santo (UFES) Universidade Estadual Paulista (Unesp) Federal University of Technology - Paraná (UTFPR/DAFIS) |
dc.contributor.author.fl_str_mv |
Morgado, B. Vieira-Martins, R. Assafin, M. Dias-Oliveira, A. Machado, D. I. Camargo, J. I.B. Malacarne, M. Sfair, R. [UNESP] Winter, O. C. [UNESP] Braga-Ribas, F. Benedetti-Rossi, G. Boldrin, L. A. [UNESP] Camargo, B. C.B. [UNESP] Gaspar, H. S. [UNESP] Gomes-Júnior, A. R. [UNESP] Miranda, J. O. de Santana, T. [UNESP] Trabuco, L. L. |
dc.subject.por.fl_str_mv |
Amalthea Astrometry Callisto Europa Ganymede Methods: data analysis Planets and satellites: individual: Io |
topic |
Amalthea Astrometry Callisto Europa Ganymede Methods: data analysis Planets and satellites: individual: Io |
description |
Progress in astrometry and orbital modelling of planetary moons in the last decade enabled better determinations of their orbits. These studies need accurate positions spread over extended periods. We present the results of the 2014–2015 Brazilian campaign for 40 mutual events from 47 observed light curves by the Galilean satellites plus one eclipse of Amalthea by Ganymede. We also reanalysed and updated results for 25 mutual events observed in the 2009 campaign. All telescopes were equipped with narrow-band filters centred at 889 nm with a width of 15 nm to eliminate the scattered light from Jupiter. The albedos’ ratio was determined using images before and after each event. We simulated images of moons, umbra, and penumbra in the sky plane, and integrated their fluxes to compute albedos, simulate light curves and fit them to the observed ones using a chi-square fitting procedure. For that, we used the complete version of the Oren-Nayer reflectance model. The relative satellite positions mean uncertainty was 11.2 mas (~35 km) and 10.1 mas (~31 km) for the 2014–2015 and 2009 campaigns respectively. The simulated and observed ASCII light curve files are freely available in electronic form at the Natural Satellites DataBase (NSDB). The 40/25 mutual events from our 2014–2015/2009 campaigns represent a significant contribution of 17%/15% in comparison with the PHEMU campaigns lead by the IMCCE. Besides that, our result for the eclipse of Amalthea is only the 4th such measurement ever published after the three ones observed by the 2014–2015 international PHEMU campaign. Our results are suitable for new orbital/ephemeris determinations for the Galilean moons and Amalthea. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T17:20:09Z 2019-10-06T17:20:09Z 2019-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.pss.2019.104736 Planetary and Space Science. 0032-0633 http://hdl.handle.net/11449/190646 10.1016/j.pss.2019.104736 2-s2.0-85072259511 |
url |
http://dx.doi.org/10.1016/j.pss.2019.104736 http://hdl.handle.net/11449/190646 |
identifier_str_mv |
Planetary and Space Science. 0032-0633 10.1016/j.pss.2019.104736 2-s2.0-85072259511 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Planetary and Space Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129122859220992 |