Detection of the Yarkovsky effect for C-type asteroids in the Veritas family

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dc.contributor.authorCarruba, V. [UNESP]
dc.contributor.authorVokrouhlicky, D.
dc.contributor.authorNesvorny, D.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionSouthwest Res Inst
dc.contributor.institutionCharles Univ Prague
dc.date.accessioned2018-11-28T16:54:49Z
dc.date.available2018-11-28T16:54:49Z
dc.date.issued2017-08-01
dc.description.abstractThe age of a young asteroid family can be determined by tracking the orbits of family members backward in time and showing that they converge at some time in the past. Here we consider the Veritas family. We find that the membership of the Veritas family increased enormously since the last detailed analysis of the family. Using backward integration, we confirm the convergence of nodal longitudes Omega, and, for the first time, also obtain a simultaneous convergence of pericentre longitudes pi. The Veritas family is found to be 8.23(0.31)(+0.37) Myr old. To obtain a tight convergence of Omega and pi, as expected from low ejection speeds of fragments, the Yarkovsky effect needs to be included in the modelling of the past orbital histories of Veritas family members. Using this method, we compute the Yarkovsky semimajor axis drift rates, da/dt, for 274 member asteroids. The distribution of da/dt values is consistent with a population of C-type objects with low densities and low thermal conductivities. The accuracy of individual da/dt measurements is limited by the effect of close encounters of member asteroids to (1) Ceres and other massive asteroids, which cannot be evaluated with confidence.en
dc.description.affiliationUniv Estadual Paulista, Grp Dinam Orbital & Planetol, UNESP, BR-12516410 Guaratingueta, SP, Brazil
dc.description.affiliationSouthwest Res Inst, Dept Space Studies, Boulder, CO 80302 USA
dc.description.affiliationCharles Univ Prague, Inst Astron, V Holesovickach 2, CZ-18000 Prague 8, Czech Republic
dc.description.affiliationUnespUniv Estadual Paulista, Grp Dinam Orbital & Planetol, UNESP, BR-12516410 Guaratingueta, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCzech Science Foundation
dc.description.sponsorshipNASA Solar System Workings program
dc.description.sponsorshipNational Aeronautics and Space Administration
dc.description.sponsorshipIdFAPESP: 16/04476-8
dc.description.sponsorshipIdCNPq: 305453/2011-4
dc.description.sponsorshipIdCzech Science Foundation: GA13-01308S
dc.format.extent4400-4413
dc.identifierhttp://dx.doi.org/10.1093/mnras/stx1186
dc.identifier.citationMonthly Notices Of The Royal Astronomical Society. Oxford: Oxford Univ Press, v. 469, n. 4, p. 4400-4413, 2017.
dc.identifier.doi10.1093/mnras/stx1186
dc.identifier.fileWOS000406837900045.pdf
dc.identifier.issn0035-8711
dc.identifier.urihttp://hdl.handle.net/11449/165693
dc.identifier.wosWOS:000406837900045
dc.language.isoeng
dc.publisherOxford Univ Press
dc.relation.ispartofMonthly Notices Of The Royal Astronomical Society
dc.relation.ispartofsjr2,346
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectcelestial mechanics
dc.subjectminor planets, asteroids: general
dc.titleDetection of the Yarkovsky effect for C-type asteroids in the Veritas familyen
dc.typeArtigo
dcterms.licensehttp://www.oxfordjournals.org/access_purchase/self-archiving_policyb.html
dcterms.rightsHolderOxford Univ Press
unesp.departmentMatemática - FEGpt

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Guaratinguetá - FEG - Faculdade de Engenharia e Ciências