J/A+A/688/A50ivo://CDS.VizieR/J/A+A/688/A50doi:10.26093/cds/vizier.36880050CDSLiberato L.Tanga P.Mary D.Minker K.Carry B.Spoto F.Bartczak P.,Sicardy B.Oszkiewicz D.Desmars J.2024-11-21T20:02:56Z2024-08-08T12:15:02ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frasteroidsastrometryAsteroids with companions constitute an excellent sample for studying the collisional and dynamical evolution of minor planets. The currently known binary population were discovered by different complementary techniques that produce, for the moment, a strongly biased distribution, especially in a range of intermediate asteroid sizes (~20 to 100km) where both mutual photometric events and high-resolution adaptive optic imaging are poorly efficient. A totally independent technique of binary asteroid discovery, based on astrometry, can help to reveal new binary systems and populate a range of sizes and separations that remain nearly unexplored. In this work, we describe a dedicated period detection method and its results for the Gaia DR3 data set. This method looks for the presence of a periodic signature in the orbit post-fit residuals. After conservative filtering and validation based on statistical and physical criteria, we are able to present a first sample of astrometric binary candidates, to be confirmed by other observation techniques such as photometric light curves and stellar occultations.2024A&A...688A..50Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/688/A50CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/359 : Gaia DR3 Part 5: Solar Systemhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/688/A50https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/688/A50http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/688/A50https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/688/A50https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/688/A50http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/688/A50GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/688/A50/table3Estimated parameters for the Gaia astrometric asteroid binary candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMPCMPC id number (ID)meta.id;meta.mainintPerWobble period estimate (Wobble_Period)htime.periodfloate_Per? 95% confidence interval in the wobble period estimate (Error_wobble_Period)hstat.errorfloatnullableAmp? Wobble amplitude estimate (Wobble_amplitude)massrc.var.amplitudefloatnullablee_Amp? 95% confidence interval in the wobble amplitude estimate (Error_wobble_amplitude)masstat.errorfloatnullableSep1? Estimated mean separation between the primary and the secondary based on the first interval of mass ratio estimated (Separation-1st_int)kmpos.angDistance;stat.meandoublenullablee_Sep1? Uncertainty in the estimated separation of the first interval (Error_sepn-1st_int)kmstat.errordoublenullableMassratio1? Mean value of the first interval of mass ratio estimate (Mass_ratio-1st_int)phys.mass;arith.ratiodoublenullablee_Massratio1? Uncertainty in the mass ratio estimate of the first interval (Error_mratio-1st_int)stat.errordoublenullableSep2? Estimated mean separation between the primary and the secondary based on the second interval of mass ratio estimated (Separation-2nd_int)kmpos.angDistance;stat.meandoublenullablee_Sep2? Uncertainty in the estimated separation of the second interval (Error_sepn-2nd_int)kmstat.errordoublenullableMassratio2? Mean value of the second interval of mass ratio estimate (Mass_ratio-2nd_int)phys.mass;arith.ratiodoublenullablee_Massratio2? Uncertainty in the mass ratio estimate of the second interval (Error_mratio-2nd_int)stat.errordoublenullablefTaxonomy[0/1]? Flag to identify candidates in which the parameters were obtained taking into account the taxonomic class (1=True) (Flag_taxonomy)meta.codeintnullablefSNR[0/1]? Flag to identify the best candidates with S/N>1 (1=True) (Flag_SNR)meta.codeintnullablefDoubleSol[0/1]? Flag to identify the candidates with two different solutions (1=True) (Flag_Double_solution)meta.codeintnullableCommentComment on the data (Comment)meta.notechar