J/ApJS/224/37ivo://CDS.VizieR/J/ApJS/224/37doi:10.26093/cds/vizier.22240037CDSGao Q.Xin Y.Liu J.-F.Zhang X.-B.Gao S.2017-12-12T14:45:26Z2016-08-22T09:45:23ZCDS support team

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

cds-question@unistra.frstellar-flaresmultiple-starseclipsing-binary-starsBased on Kepler data, we present the results of a search for white light flares on 1049 close binaries. We identify 234 flare binaries, of which 6818 flares are detected. We compare the flare-binary fraction in different binary morphologies ("detachedness"). The result shows that the fractions in over-contact and ellipsoidal binaries are approximately 10%-20% lower than those in detached and semi-detached systems. We calculate the binary flare activity level (AL) of all the flare binaries, and discuss its variations along the orbital period (P_orb_) and rotation period (P_rot_, calculated for only detached binaries). We find that the AL increases with decreasing P_orb_ or P_rot_, up to the critical values at P_orb_~3 days or P_rot_~1.5 days, and thereafter the AL starts decreasing no matter how fast the stars rotate. We examine the flaring rate as a function of orbital phase in two eclipsing binaries on which a large number of flares are detected. It appears that there is no correlation between flaring rate and orbital phase in these two binaries. In contrast, when we examine the function with 203 flares on 20 non-eclipse ellipsoidal binaries, bimodal distribution of amplitude-weighted flare numbers shows up at orbital phases 0.25 and 0.75. Such variation could be larger than what is expected from the cross section modification.2016ApJS..224...37Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/224/37CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/133 : Kepler Input Catalog (Kepler Mission Team, 2009)J/ApJS/224/12 : Kepler planetary candidates. VII. 48-month (Coughlin+, 2016)J/MNRAS/447/2714 : Flare stars across the H-R diagram (Balona+, 2015)J/ApJS/211/2 : Revised properties of Q1-16 Kepler targets (Huber+, 2014)J/MNRAS/437/3473 : Temperatures of Kepler eclipsing binaries (Armstrong+, 2014)J/PASP/126/914 : Kepler eclipsing binary stars. V. (Conroy+, 2014)J/AJ/147/45 : Kepler mission. IV. Close binaries (Conroy+, 2014)J/ApJS/209/5 : Superflares of Kepler stars. I. (Shibayama+, 2013)J/A+A/557/L10 : Rotation periods of 12000 Kepler stars (Nielsen+, 2013)J/MNRAS/431/2240 : Activity in A-type stars from Kepler (Balona, 2013)J/MNRAS/428/1656 : Time of minima of HD 181068 (Borkovits+, 2013)J/other/Nat/485.478 : Superflares on solar-type stars (Maehara+, 2012)J/ApJ/728/117 : Kepler planetary candidates. I. (Borucki+, 2011)J/AJ/142/160 : Kepler Mission. II. eclipsing binaries (Slawson+, 2011)J/AJ/141/50 : White-light flares on stars from Kepler (Walkowicz+, 2011)J/A+A/529/A89 : Kepler satellite variability study (Debosscher+, 2011)http://archive.stsci.edu/kepler/ : MAST Kepler home pagehttp://keplerebs.villanova.edu/ : Kepler Eclipsing Binaries online cataloghttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/224/37https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/224/37http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/224/37https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/224/37https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/224/37http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/224/37GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/224/37/table1 (Fundamental parameters of 234 flare binaries)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/224/37/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/224/37/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/224/37/table1?GETtext/xml+votable180.050000true286.420201937.80575190.0055555555555555565/3689 3734 3776 3784 3792 6/14559 14577 14578 14579 14580 14581 14582 14585 14586 14589 14590 14591 14731 14733 14735 14744 14753 14754 14755 14762 14763 14765 14766 14767 14771 14773 14774 14775 14776 14777 14779 14781 14783 14794 14817 14818 14819 14824 14825 14826 14828 14915 14918 14919 14920 14921 14923 14926 14927 14928 14930 14931 14932 14933 14934 14941 14942 14945 14946 14947 14948 14952 14955 14957 14958 14959 14960 14963 14965 14967 14968 14972 14974 14975 15041 15044 15045 15057 15060 15061 15110 15111 15112 15113 15114 15117 15118 15119 15120 15121 15123 15126 15127 15128 15129 15131 15132 15133 15135 15140 15141 15143 15145 15146 15147 15148 15150 15155 15156 15157 15172 15173 15174 15178 15232https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/224/37?format=asciidefaultJ/ApJS/224/37/table2Parameters of the flaresrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKICKepler Input Catalog identifiermeta.id;meta.mainintBJDBarycentric Julian date for each mean flare time; BJD-2450000dtime.epochdoubleEW[0/0.11] Total integrated flux of the flare (1)dphot.flux;arith.ratiodoubledF/F[0.0001/0.9] Relative flare intensityspect.line.intensity;arith.ratiodoubledt[0.9/34] Total flare durationhtime.durationdoubleJ/ApJS/224/37/table1Fundamental parameters of 234 flare binariesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKICKepler Input Catalog identifiermeta.id;meta.mainintprimaryTeff[3354/9981] Effective Temperature, from KICKphys.temperature.effectiveintlogg[2.4/5.1] Surface Gravity, from KICcm.s**-2phys.gravityfloatPorb[0.4/570] Orbital period (1)dtime.periodfloatc[0/1] Morphology value (1) (2)src.morph.paramfloatAmp[0.001/0.3] Light curve amplitude (1)magsrc.var.amplitudefloatALFlare activity level (3)phys.energydoublef[0.001/0.3] Flare Frequency (f(flares/day))d**-1em.freq;src.varfloatNf[1/345] Total number of flaresmeta.numberintdF/F[-3.3/-0.2] Log Relative flare intensity (4)spect.line.intensity;arith.ratiofloatNotes[21/24] Kepler LC-PDC data release version adopted for each flare binary (5)meta.noteintC14Display data from Conroy+, 2014, J/AJ/147/45, within 2"meta.ref.urlintnullableKCatDisplay data from Debosscher+, 2011, J/A+A/529/A89 and Slawson+, 2011, J/AJ/142/160, if anymeta.ref.urlintnullableK16Display data from the Kepler EB catalog (Kirk+, 2016, J/AJ/151/68)meta.ref.urlcharLCLC flares plotmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main