J/ApJS/256/11ivo://CDS.VizieR/J/ApJS/256/11doi:10.26093/cds/vizier.22560011CDSBienias J.Bodi A.Forro A.Hajdu T.Szabo R.2022-05-18T13:35:17Z2022-02-23T14:15:57ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsabsolute-magnitudestellar-massesstellar-radiivisible-astronomyDuring the primary Kepler mission, between 2009 and 2013, about 150,000 preselected targets were observed with a 29.42 minute long cadence. However, a survey of background stars that fall within the field of view (FOV) of the downloaded apertures of the primary targets has revealed a number of interesting objects. In this paper, we present the results of this search, focusing on short-period eclipsing binary (SPEB) stars in the background pixels of primary Kepler targets. We used Lomb-Scargle and Phase Dispersion Minimization methods to reveal pixels that show significant periodicities, resulting in the identification of 547 previously unknown faint SPEBs, mostly W UMa-type stars, and almost doubling the number of SPEBs in the original Kepler FOV. We prepared the light curves for scientific analysis and cross-matched the pixel coordinates with Gaia and other catalogs to identify the possible sources. We have found that the mean of the brightness distribution of the new background SPEBs is ~4-5mag fainter than other, primary target eclipsing binaries in the Kepler Eclipsing Binary catalog. The period distribution nonetheless follows the same trend, but the spatial distribution appears to be different from that described by Kirk+ (2016, J/AJ/151/68) for the catalog eclipsing binaries.2021ApJS..256...11Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/256/11CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/133 : Kepler Input Catalog (Kepler Mission Team, 2009)I/350 : Gaia EDR3 (Gaia Collaboration, 2020)J/AJ/147/45 : Kepler mission. IV. Eclipse times for bin. (Conroy+, 2014)J/AcA/65/39 : OGLE Gal. Bulge ultra-short-per. binaries (Soszynski+, 2015)J/MNRAS/448/429 : Starspots in short-period Kepler binaries (Balaji+, 2015)J/MNRAS/448/946 : Kepler eclipse timing variation analyses (Borkovits+, 2015)J/MNRAS/455/4136 : Kepler triples (Borkovits+, 2016)J/AJ/151/68 : Kepler Mission. VII. Eclipsing binaries in DR3 (Kirk+, 2016)J/AJ/156/18 : APOGEE: companions of evolved stars (Price-Whelan+, 2018)J/AJ/157/174 : Transiting planets in Kepler-47 system (Orosz+, 2019)J/ApJS/255/1 : Morphology of OGLE LCs of Eclipsing binaries (Bodi+, 2021)http://konkoly.hu/KIK/data_en.html : Kepler light curve datahttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/256/11https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/256/11http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/256/11https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/256/11https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/256/11http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/256/11GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/256/11/table4 (Eclipsing binary class, period and source data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/256/11/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/256/11/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/256/11/table4?GETtext/xml+votable180.050000true290.9070737.09661890.0055555555555555565/3645 3647 3683 3688-3690 3692 3694-3695 3704 3706 3732 3738 3776-3778 3780 3782 3792 6/14559 14573 14575 14578-14579 14584-14586 14730-14731 14744 14746 14749-14751 14764-14765 14767 14772-14773 14775 14794-14795 14828 14830 14914-14915 14917-14921 14923-14926 14933-14938 14941-14943 14945 14947 14950 14958-14960 14964 14968-14970 14972 15042 15060 15117-15119 15124-15126 15132-15133 15136-15137 15139-15140 15143 15146 15152 15154 15156-15157 15172 15174https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/256/11?format=asciiOpticaldefaultJ/ApJS/256/11/table4Eclipsing binary class, period and source dataGaia2? Gaia EDR3 candidate 2 for the binary if anymeta.id.assocnullableGaia3? Gaia EDR3 candidate 3 for the binary if anymeta.id.assocnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPDisplay the physical parameters (link to Table 5)meta.ref.urlcharKICKepler Input Catalog identifier (G1)meta.id;meta.mainintprimaryClVisual classification (1)src.classcharMorph[0.44/0.99] Classification (2)src.morph.typefloatBJD0Barycentric Julian Date of zero epoch; JD-2454833dtime.epochdoublePMD[0.18/1] Phase Dispersion Minimisation perioddtime.period;instr.dispersiondoubleLS[0.18/1] Lomb-Scargle perioddtime.perioddoubleGaia1Gaia EDR3 candidate 1 for the binarymeta.id.assocGaia4? Gaia EDR3 candidate 4 for the binary if anymeta.id.assocnullableGaia5? Gaia EDR3 candidate 5 for the binary if anymeta.id.assocnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from the KIC catalog (V/133) (right ascension part)degpos.eq.ra;meta.main_DEPosition from the KIC catalog (V/133) (declination part)degpos.eq.dec;meta.mainJ/ApJS/256/11/table5Eclipsing binary physical parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKICKepler Input Catalog identifier (G1)meta.id;meta.mainintPMD[0.18/0.5] Phase Dispersion Minimisation perioddtime.period;instr.dispersiondoubleLS[0.18/0.5] Lomb-Scargle perioddtime.perioddoubleVMag[2.8/6.5] Estimated absolute Johnson V band Vega magnitudemagphys.magAbsfloatM1[0.7/1.6] Estimated primary masssolMassphys.massfloatM2[0.3/0.5] Estimated secondary masssolMassphys.massfloatq[0.27/0.42] Mass ratio; M2/M1phys.massfloata[1.3/2.1] Estimated orbital semi-major axissolRadphys.angSize.smajAxisfloatR1[0.6/1.1] Estimated primary radiussolRadphys.size.radiusfloatR2[0.4/0.6] Estimated secondary radiussolRadphys.size.radiusfloat