J/MNRAS/448/429ivo://CDS.VizieR/J/MNRAS/448/429doi:10.26093/cds/vizier.74480429CDSBalaji B.Croll B.Levine A.M.Rappaport S.2024-08-14T20:20:36Z2015-12-04T15:07:52ZCDS support team

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

cds-question@unistra.frmultiple-starsWe report on a new method for tracking the phases of the orbital modulations in very short-period, near-contact, and contact binary systems in order to follow starspots. We apply this technique to Kepler light curves for 414 binary systems that were identified as having anticorrelated O-C curves for the mid-times of the primary and secondary eclipses, or in the case of non-eclipsing systems, their light-curve minima. This phase tracking approach extracts more information about starspot and binary system behaviour than may be easily obtained from the O-C curves. We confirm the hypothesis of Tran et al. that we can successfully follow the rotational motions of spots on the surfaces of the stars in these binaries. In ~34% of the systems, the spot rotation is retrograde as viewed in the frame rotating with the orbital motion, while ~13% show significant prograde spot rotation. The remaining systems show either little spot rotation or erratic behaviour, or sometimes include intervals of both types of behaviour. We discuss the possibility that the relative motions of spots are related to differential rotation of the stars. It is clear from this study that the motions of the starspots in at least 50% of these short-period binaries are not exactly synchronized with the orbits.2015MNRAS.448..429Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/448/429CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/133 : Kepler Input Catalog (Kepler Mission Team, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/448/429https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/448/429http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/448/429https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/448/429https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/448/429http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/448/429GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/448/429/tablea1 (Kepler binaries exhibiting anticorrelated O-C curves)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/448/429/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/448/429/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/448/429/tablea1?GETtext/xml+votable180.050000true291.188637.161628890.0055555555555555564/922 5/3646 3683 3692-3693 3739 3743 3776 3779 3781 3784 3786 3792 6/14575 14577-14579 14581 14583 14588 14590-14591 14730-14731 14744 14746 14750-14751 14776 14778-14779 14781-14783 14794-14795 14816 14818 14824-14826 14828 14830 14914-14915 14918-14919 14921 14923-14925 14927 14929 14931 14933-14934 14937-14942 14945-14947 14949-14953 14955 14961 14963-14964 14967-14969 14971 15040-15041 15043-15044 15057 15059-15061 15109-15111 15113-15115 15120-15122 15128-15129 15131-15133 15135 15140-15141 15143 15148 15150-15151 15153-15158 15160 15172-15173 15178 15232https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/448/429?format=asciidefaultJ/MNRAS/448/429/tablea1Kepler binaries exhibiting anticorrelated O-C curvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKICKIC numbermeta.id;meta.mainintn_KIC[*] Note on KIC (1)meta.notecharPerPerioddtime.perioddoubleFig[ABCD] Figure number in which the light curves is plottedmeta.idcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from KIC (Cat. V/133) (right ascension part)degpos.eq.ra;meta.main_DEPositions from KIC (Cat. V/133) (declination part)degpos.eq.dec;meta.main