The two rings of (50000) Quaoar

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorObservatório Nacional/MCTI-
Autor(es): dc.contributorLaboratório Interinstitucional de E-Astronomia - LIneA-
Autor(es): dc.contributorCnrs-
Autor(es): dc.contributorUniversidade Federal do Rio de Janeiro (UFRJ)-
Autor(es): dc.contributorFederal University of Technology - Paraná (UTFPR-Curitiba)-
Autor(es): dc.contributorFlorida Space Institute,UCF-
Autor(es): dc.contributorInstituto de Astrofísica de Andalucía - Consejo Superior de Investigaciones Científicas-
Autor(es): dc.contributorUniversity of California-
Autor(es): dc.contributorNaXys-
Autor(es): dc.contributorSpace Telescope Science Institute-
Autor(es): dc.contributorCnes-
Autor(es): dc.contributorCanada-France-Hawaii Telescope-
Autor(es): dc.contributorInstitut Polytechnique des Sciences Avancées Ipsa-
Autor(es): dc.contributorUniv. Lille-
Autor(es): dc.contributorAkdeniz University-
Autor(es): dc.contributorTÜB?ITAK National Observatory-
Autor(es): dc.contributorUniversidade Federal de Uberlândia (UFU)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Estadual de Ponta Grossa (UEPG)-
Autor(es): dc.contributorInternationale Amateursternwarte (IAS) E. V.-
Autor(es): dc.contributorInternational Occultation Timing Association - European Section (IOTA/ES)-
Autor(es): dc.contributorUniversité de Montréal-
Autor(es): dc.contributorHarvard-Smithsonian Center for Astrophysics-
Autor(es): dc.contributorGemini Observatory/NSF's NOIRLab-
Autor(es): dc.contributorCabrillo College Astronomy-
Autor(es): dc.contributorSouthwest Research Institute-
Autor(es): dc.contributorInternational Occultation Timing Association (IOTA)-
Autor(es): dc.contributorCalifornia Institute of Technology-
Autor(es): dc.contributorUniversidad Nacional Autónoma de México-
Autor(es): dc.contributorUniversity of Oregon-
Autor(es): dc.contributorCanCON - Canadian Collaborative Occultation Network-
Autor(es): dc.contributorNasa Ames Research Center-
Autor(es): dc.contributorUniversity of New Haven-
Autor(es): dc.contributorAcademia Sinica Institute of Astronomy and Astrophysics-
Autor(es): dc.contributorUniversity of Colorado-
Autor(es): dc.contributorTohoku University-
Autor(es): dc.contributorUniversity of Victoria-
Autor(es): dc.contributorUnistellar-
Autor(es): dc.contributorSeti Institute-
Autor(es): dc.contributorWesleyan University-
Autor(es): dc.contributorResearch and Education Collaborative Occultation Network-
Autor(es): dc.contributorPurdue University Northwest-
Autor(es): dc.contributorUniversity of Virginia-
Autor(es): dc.contributorPrivate Observatory-
Autor(es): dc.contributorUniversity of la Laguna-
Autor(es): dc.contributorUniversity of Tokyo-
Autor(es): dc.contributorSchool of Medicine Department of Basic Sciences University of Occupational and Environmental Health-
Autor(es): dc.contributorChiba Institute of Technology-
Autor(es): dc.contributorNaylor Observatory-
Autor(es): dc.contributorCaltech/IPAC-
Autor(es): dc.creatorPereira, C. L.-
Autor(es): dc.creatorSicardy, B.-
Autor(es): dc.creatorMorgado, B. E.-
Autor(es): dc.creatorBraga-Ribas, F.-
Autor(es): dc.creatorFernández-Valenzuela, E.-
Autor(es): dc.creatorSouami, D.-
Autor(es): dc.creatorHoller, B. J.-
Autor(es): dc.creatorBoufleur, R. C.-
Autor(es): dc.creatorMargoti, G.-
Autor(es): dc.creatorAssafin, M.-
Autor(es): dc.creatorOrtiz, J. L.-
Autor(es): dc.creatorSantos-Sanz, P.-
Autor(es): dc.creatorEpinat, B.-
Autor(es): dc.creatorKervella, P.-
Autor(es): dc.creatorDesmars, J.-
Autor(es): dc.creatorVieira-Martins, R.-
Autor(es): dc.creatorKilic, Y.-
Autor(es): dc.creatorGomes Júnior, A. R.-
Autor(es): dc.creatorCamargo, J. I.B.-
Autor(es): dc.creatorEmilio, M.-
Autor(es): dc.creatorVara-Lubiano, M.-
Autor(es): dc.creatorKretlow, M.-
Autor(es): dc.creatorAlbert, L.-
Autor(es): dc.creatorAlcock, C.-
Autor(es): dc.creatorBall, J. G.-
Autor(es): dc.creatorBender, K.-
Autor(es): dc.creatorBuie, M. W.-
Autor(es): dc.creatorButterfield, K.-
Autor(es): dc.creatorCamarca, M.-
Autor(es): dc.creatorCastro-Chacón, J. H.-
Autor(es): dc.creatorDunford, R.-
Autor(es): dc.creatorFisher, R. S.-
Autor(es): dc.creatorGamble, D.-
Autor(es): dc.creatorGeary, J. C.-
Autor(es): dc.creatorGnilka, C. L.-
Autor(es): dc.creatorGreen, K. D.-
Autor(es): dc.creatorHartman, Z. D.-
Autor(es): dc.creatorHuang, C. K.-
Autor(es): dc.creatorJanuszewski, H.-
Autor(es): dc.creatorJohnston, J.-
Autor(es): dc.creatorKagitani, M.-
Autor(es): dc.creatorKamin, R.-
Autor(es): dc.creatorKavelaars, J. J.-
Autor(es): dc.creatorKeller, J. M.-
Autor(es): dc.creatorDe Kleer, K. R.-
Autor(es): dc.creatorLehner, M. J.-
Autor(es): dc.creatorLuken, A.-
Autor(es): dc.creatorMarchis, F.-
Autor(es): dc.creatorMarlin, T.-
Autor(es): dc.creatorMcGregor, K.-
Autor(es): dc.creatorNikitin, V.-
Autor(es): dc.creatorNolthenius, R.-
Autor(es): dc.creatorPatrick, C.-
Autor(es): dc.creatorRedfield, S.-
Autor(es): dc.creatorRengstorf, A. W.-
Autor(es): dc.creatorReyes-Ruiz, M.-
Autor(es): dc.creatorSeccull, T.-
Autor(es): dc.creatorSkrutskie, M. F.-
Autor(es): dc.creatorSmith, A. B.-
Autor(es): dc.creatorSproul, M.-
Autor(es): dc.creatorStephens, A. W.-
Autor(es): dc.creatorSzentgyorgyi, A.-
Autor(es): dc.creatorSánchez-Sanjuán, S.-
Autor(es): dc.creatorTatsumi, E.-
Autor(es): dc.creatorVerbiscer, A.-
Autor(es): dc.creatorWang, S. Y.-
Autor(es): dc.creatorYoshida, F.-
Autor(es): dc.creatorYoung, R.-
Autor(es): dc.creatorZhang, Z. W.-
Data de aceite: dc.date.accessioned2025-08-21T21:55:06Z-
Data de disponibilização: dc.date.available2025-08-21T21:55:06Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-05-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1051/0004-6361/202346365-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/247404-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/247404-
Descrição: dc.descriptionContext. Quaoar is a classical trans-Neptunian object (TNO) with an area-equivalent diameter of 1100 km and an orbital semi-major axis of 43.3 astronomical units. Based on stellar occultations observed between 2018 and 2021, an inhomogeneous ring (Q1R, i.e., Quaoar's first ring) has been detected around this body. Aims. A new stellar occultation by Quaoar was observed on August 9, 2022, with the aim of improving Quaoar's shape models and the physical parameters of Q1R, while searching for additional material around the body. Methods. The occultation provided nine effective chords across Quaoar, pinning down its size, shape, and astrometric position. Large facilities, such as Gemini North and the Canada-France-Hawaii Telescope (CFHT), were used to obtain high acquisition rates and signal-to-noise ratios. The light curves were also used to characterize the Q1R ring (radial profiles and orbital elements). Results. Quaoar's elliptical fit to the occultation chords yields the limb with an apparent semi-major axis of 579.5 ± 4.0 km, apparent oblateness of 0.12 ± 0.01, and area-equivalent radius of 543 ± 2 km. Quaoar's limb orientation is consistent with Q1R and Weywot orbiting in Quaoar's equatorial plane. The orbital radius of Q1R is refined to a value of 4057 ± 6 km. The radial opacity profile of the more opaque ring profile follows a Lorentzian shape that extends over 60 km, with a full width at half maximum (FWHM) of ?5 km and a peak normal optical depth of 0.4. Besides the secondary events related to the already reported rings, new secondary events detected during the August 2022 occultation in three different data sets are consistent with another ring around Quaoar with a radius of 2520 ± 20 km, assuming the ring is circular and co-planar with Q1R. This new ring has a typical width of 10 km and a normal optical depth of ?0.004. Just as Q1R, it also lies outside Quaoar's classical Roche limit.-
Descrição: dc.descriptionObservatório Nacional/MCTI, R. General José Cristino 77, RJ-
Descrição: dc.descriptionLaboratório Interinstitucional de E-Astronomia - LIneA, RJ-
Descrição: dc.descriptionUniversité Psl Lesia Observatoire de Paris Cnrs-
Descrição: dc.descriptionUniversidade Federal Do Rio de Janeiro - Observatório Do Valongo, Ladeira Pedro Antônio 43, RJ-
Descrição: dc.descriptionFederal University of Technology - Paraná (UTFPR-Curitiba), Rua Sete de Setembro, 3165, PR-
Descrição: dc.descriptionFlorida Space Institute,UCF, 12354 Research Parkway, Partnership 1 Building, Room 211-
Descrição: dc.descriptionInstituto de Astrofísica de Andalucía - Consejo Superior de Investigaciones Científicas, Glorieta de la Astronomía S/N-
Descrição: dc.descriptionDepartments of Astronomy and of Earth and Planetary Science University of California, 501, Campbell Hall-
Descrição: dc.descriptionDepartment of Mathematics University of Namur NaXys, Rue de Bruxelles 61-
Descrição: dc.descriptionLaboratoire Lagrange Université Côte d'Azur Observatoire de la Côte d'Azur Cnrs, Bd de l'Observatoire, CS 34229-
Descrição: dc.descriptionSpace Telescope Science Institute-
Descrição: dc.descriptionLam (Laboratoire d'Astrophysique de Marseille) Umr 7326 Aix Marseille Université CNRS Cnes-
Descrição: dc.descriptionCanada-France-Hawaii Telescope, 65-1238 Mamalahoa Highway-
Descrição: dc.descriptionInstitut Polytechnique des Sciences Avancées Ipsa, 63 boulevard de Brandebourg-
Descrição: dc.descriptionPsl Research University Institut de Mécanique Céleste et de Calcul des ÉPhémérides Sorbonne Universités IMCCE Observatoire de Paris CNRS Upmc Univ Paris 06 Univ. Lille-
Descrição: dc.descriptionDepartment of Space Sciences and Technologies Faculty of Sciences Akdeniz University-
Descrição: dc.descriptionTÜB?ITAK National Observatory, Akdeniz University Campus-
Descrição: dc.descriptionInstitute of Physics Federal University of Uberlândia, MG-
Descrição: dc.descriptionGrupo de Dinâmica Orbital e Planetologia Unesp - São Paulo State University, SP-
Descrição: dc.descriptionUniversidade Estadual de Ponta Grossa O.A. - Degeo, PR-
Descrição: dc.descriptionInternationale Amateursternwarte (IAS) E. V., Mittelstr. 6-
Descrição: dc.descriptionInternational Occultation Timing Association - European Section (IOTA/ES), Am Brombeerhag 13-
Descrição: dc.descriptionDépartement de Physique and Observatoire du Mont-Mégantic Succ. Centre-ville Université de Montréal, C.P. 6128-
Descrição: dc.descriptionInstitut Trottier de Recherche sur les Exoplanètes Université de Montréal-
Descrição: dc.descriptionHarvard-Smithsonian Center for Astrophysics, 60 Garden Street-
Descrição: dc.descriptionGemini Observatory/NSF's NOIRLab-
Descrição: dc.descriptionCabrillo College Astronomy-
Descrição: dc.descriptionSouthwest Research Institute, 1050 Walnut Street, Suite 300-
Descrição: dc.descriptionInternational Occultation Timing Association (IOTA)-
Descrição: dc.descriptionCalifornia Institute of Technology, 1200 E California Blvd-
Descrição: dc.descriptionInstituto de Astronomía Universidad Nacional Autónoma de México, AP 106,BC-
Descrição: dc.descriptionUniversity of Oregon-
Descrição: dc.descriptionCanCON - Canadian Collaborative Occultation Network-
Descrição: dc.descriptionNasa Ames Research Center-
Descrição: dc.descriptionDept. of Mathematics and Physics University of New Haven, 300 Boston Post Road-
Descrição: dc.descriptionAcademia Sinica Institute of Astronomy and Astrophysics, 11F of AS/NTU Astronomy-Mathematics Building No.1, Sec. 4, Roosevelt Road, ROC-
Descrição: dc.descriptionUniversity of Colorado, 2000 Colorado Avenue-
Descrição: dc.descriptionPlanetary Plasma and Atmospheric Research Center Graduate School of Science Tohoku University, 6-3 Aramaki -aza-aoba, Aoba-ku-
Descrição: dc.descriptionDepartment of Physics and Astronomy University of Victoria, Building, 3800 Finnerty Road, Victoria-
Descrição: dc.descriptionUnistellar, 5 allée Marcel Leclerc, bâtiment B-
Descrição: dc.descriptionCarl Sagan Center Seti Institute, Suite 200, 339 Bernardo Avenue-
Descrição: dc.descriptionAstronomy Department and Van Vleck Observatory Wesleyan University-
Descrição: dc.descriptionResearch and Education Collaborative Occultation Network-
Descrição: dc.descriptionDepartment of Chemistry and Physics Purdue University Northwest-
Descrição: dc.descriptionDepartment of Astronomy University of Virginia, PO Box 400325-
Descrição: dc.descriptionPrivate Observatory-
Descrição: dc.descriptionInstituto de Astrofísica de Canarias University of la Laguna-
Descrição: dc.descriptionDept. Earth and Planetary Science University of Tokyo-
Descrição: dc.descriptionSchool of Medicine Department of Basic Sciences University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahata-
Descrição: dc.descriptionPlanetary Exploration Research Center Chiba Institute of Technology, 2-17-1 Tsudanuma, Chiba-
Descrição: dc.descriptionNaylor Observatory-
Descrição: dc.descriptionNasa Exoplanet Science Institute Caltech/IPAC, Mail Code 100- 22-
Descrição: dc.descriptionGrupo de Dinâmica Orbital e Planetologia Unesp - São Paulo State University, SP-
Idioma: dc.languageen-
Relação: dc.relationAstronomy and Astrophysics-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectKuiper belt objects: individual: Quaoar-
Palavras-chave: dc.subjectMethods: data analysis-
Palavras-chave: dc.subjectMethods: observational-
Palavras-chave: dc.subjectPlanets and satellites: rings-
Palavras-chave: dc.subjectTechniques: photometric-
Título: dc.titleThe two rings of (50000) Quaoar-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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