J/MNRAS/503/2979ivo://CDS.VizieR/J/MNRAS/503/2979doi:10.26093/cds/vizier.75032979CDSPapageorgiou A.Catelan M.Christopoulou P.-E.Drake A.J.,Djorgovski S.G.2024-11-06T20:33:22Z2024-03-04T16:01:33ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsorbitsWe present 126 eclipsing binary candidates among 4683 Catalina Sky Surveys (CSS) detached and semi-detached eclipsing binary systems (EBs) showing cyclic or quadratic period variations over a 12 yr time span. By using inverse Gaussian profiles of the eclipses coupled with a Markov chain Monte Carlo procedure, times of minima (ToM) were calculated and diagrams with eclipse timing variations (ETVs) were constructed. Numerical tests were performed, involving synthetic EBs with period variations generated by the PHOEBE 2.0 engine and actual data for EBs with well-known period variations from the literature, to verify that the calculation of ToM variations for our CSS systems is reliable. A total of 63 out of the 126 EBs show likely cyclic ETVs, while the remainder present quadratic behaviour instead. Periods, amplitudes, period change rates, and associated errors were determined by using sinusoidal and parabolic models. 12 out of the 63 EBs (19 per cent) that appear to exhibit periodic ETVs are low-mass candidates. Additionally, four out of 126 also have maximum quadrature light variations. The possibility that the cyclic variations are caused by the light traveltime effect due to the presence of a tertiary companion is investigated. The possible nature of the quadratic ETVs is also discussed.2021MNRAS.503.2979Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/503/2979CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/503/2979https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/503/2979http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/503/2979https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/503/2979https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/503/2979http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/503/2979GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/503/2979/table1 (Linear ephemeris (epoch HJD and period Pbin) for 126 CSS EBs and mean error of the calculated ToM)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/503/2979/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/503/2979/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/503/2979/table1?GETtext/xml+votable180.050000true5.018.32190.0055555555555555566/178 359 509 566 736 782 794 877 1041 1045 1172 1574 2057 2176 2230 4108 4113 4139 4179 4236 4255 4274 4285 4422 4621 4735 4740 4751 4755 4764 4819 4903 4909 4987 5054 5167 5177 5518 5637 6166 6365 6395 6434 6527 6530 6542 6559 6591 6728 6744 7173 8267 8271 8316 8378 8515 8568 9022 9322 9332 9334 9359 9362 9395 10785 12637 13603 19050 19052 19117 19169 19174 19339 19389 19524 19854 19914 20366 20399 21830 21871 21881 21958 22366 22978 23012 23035 23154 23198 23217 23230 23303 23374 23384 23388-23389 23412 23429 24211 24252 25943 26012 26077 26156 26991 27093 27298 27558 28237 28348 28374 28609 28612 31483 31637 31639 31725-31726 31728 32440 40956 49110https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/503/2979?format=asciidefaultJ/MNRAS/503/2979/table1Linear ephemeris (epoch HJD and period Pbin) for 126 CSS EBs and mean error of the calculated ToMrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSimbadSimbad column added by the CDSmeta.ref.urlcharNameName (CSS JHHMMSS.s+DDMMSS)meta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.raRASRight ascension (J2000)spos.eq.ra;meta.mainDEJ2000Declinaiton (J2000)pos.eq.dec;meta.mainHJDHeliocentric Julian date (HJD-2400000)dtime.epochdoublee_HJDError on HJD (lower value)dstat.error;time.epochdoubleE_HJDError on HJD (upper value)dstat.error;stat.maxdoublePerPerioddtime.perioddoublee_PerError on period (lower value)1e-07dstat.errorfloatE_PerError on period (upper value)1e-07dstat.error;stat.maxfloat<ToMerr>Mean error on time of minima (ToM)dstat.errorfloatJ/MNRAS/503/2979/table2Amplitudes (Ampmod) and periods (Pmod) for 63 CSS EBs with cyclic ETV variationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName (CSS JHHMMSS.s+DDMMSS)meta.id;meta.maincharAmpmodAmplitude of variationdsrc.var.amplitudefloate_AmpmodError on amplitude (lower value)dstat.errorfloatE_AmpmodError on amplitude (upper value)dstat.error;stat.maxfloatPermodPerioddtime.periodfloate_PermodError on Period (lower value)dstat.errorfloatE_PermodError on Period (upper value)dstat.error;stat.maxfloatDELTABICBIC differencephot.mag;arith.diffJ/MNRAS/503/2979/table3Period change rate dPbin/dE for 63 CSS EBs with parabolic ETV variationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName (CSS JHHMMSS.s+DDMMSS)meta.id;meta.mainchardPbin/dEPeriod change rate (in 10^-10^ days per cycle)1e-10d.c**-1meta.notedoublee_dPbin/dEError on period change rate (lower value)1e-10d.c**-1stat.errorfloatE_dPbin/dEError on period change rate (upper value)1e-10d.c**-1stat.error;stat.maxfloatDELTABICBIC differencephot.mag;arith.diff