J/A+A/672/A48ivo://CDS.VizieR/J/A+A/672/A48doi:10.26093/cds/vizier.36720048CDSMinker K.Carry B.2024-11-28T20:03:06Z2023-03-28T09:23:21ZCDS support team

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

cds-question@unistra.frsolar-systemasteroidsorbitsSmall binary asteroid systems and pairs are thought to form through fission induced by spin up via the Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect. This process is expected to depend on their structural strength, hence composition. We aim to determine how taxonomic classes, used as a proxy for composition, distribute amongst binary asteroids and asteroid pairs compared to the general population. We compare the distribution of taxonomic classes of binary systems and pairs with that of a reference sample of asteroids. We build this sample by selecting asteroids to reproduce the orbital and size distribution of the binaries and pairs to minimize potential biases between samples. A strong deficit of primitive compositions (C, B, P, D types) among binary asteroids and asteroid pairs is identified, as well as a strong excess of asteroids with mafic-silicate rich surface compositions (S, Q, V, A types). Conclusions. Amongst low mass, rapidly rotating asteroids, those with mafic-silicate rich compositions are more likely to form multiple asteroid systems than their primitive counterparts.2023A&A...672A..48Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/672/A48CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/672/A48https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/672/A48http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/672/A48https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/672/A48https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/672/A48http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/672/A48GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/672/A48/tableaDetails of asteroids considered in the studyaSemi-major axisphys.angSize;srcdoublee_Diam? Uncertainty in diameterkmstat.errorfloatnullabler_DiamCitation for diameter (BibCodbe)meta.ref;pos.framecharpV? Albedophys.albedofloatnullablee_pV? Uncertainty in albedostat.errordoublenullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSetSet which asteroid belongs to (1)meta.idcharNumAsteroid numbermeta.iddoubleNameAsteroid namemeta.id;meta.mainchareOrbital eccentricitysrc.orbital.eccentricitydoubleiOrbital inclinationsrc.orbital.inclinationdoubleDiam? Primary diameterkmphys.size.diameterfloatnullableTaxMethodMethod used to determine taxonomy (2)meta.notecharTaxSchemeScheme used to determine taxonomymeta.notecharClassTaxonomic classsrc.classcharWaverangeWaverange used to determine taxonomyinstr.bandwidthcharTaxRefCitation for taxonomy (BibCodbe)meta.bibchar