J/AJ/154/260ivo://CDS.VizieR/J/AJ/154/260doi:10.26093/cds/vizier.51540260CDSPi Q.-F.Zhang L.-Y.Bi S.-L.Han X.L.Wang D.-M.Lu H.-P.2018-10-15T11:29:50Z2018-09-10T08:54:02ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsinfrared-photometryvisible-astronomybroad-band-photometryIn this paper, we present new BVRI light curves of short-period contact eclipsing binaries V1101 Her and AD Phe from our observations carried out from 2014 to 2015 using the SARA KP and SARA CT telescopes. There is an eclipsing binary located at {alpha}(2000)=01h16m36.15s and {delta}(2000)=-39{deg}49'55.7" in the field of view of AD Phe. We derived an updated ephemeris and found there a cyclic variation overlaying a continuous period increase (V1101 Her) and decrease (AD Phe). This kind of cyclic variation may be attributed to the light time effect via the presence of the third body or magnetic activity cycle. The orbital period increase suggests that V1101 Her is undergoing a mass-transfer from the primary to the secondary component (dM_1_/dt=2.64(+/-0.11)x10^-6^ M_{sun}_/yr) with the third body (P3=13.9(+/-1.9) years), or 2.81(+/-0.07)x10^-6^ M_{sun}_/yr for an increase and magnetic cycle (12.4(+/-0.5) years). The long-term period decrease suggests that AD Phe is undergoing a mass-transfer from the secondary component to the primary component at a rate of -8.04(+/-0.09)x10^-8^ M_{sun}_/yr for a period decrease and the third body (P3=56.2(+/-0.8) years), or -7.11(+/-0.04)x10^-8^ M_{sun}_/yr for a decrease and magnetic cycle (50.3(+/-0.5) years). We determined their orbital and geometrical parameters. For AD Phe, we simultaneously analyzed our BVRI light curves and the spectroscopic observations obtained by Duerbeck & Rucinski (2007AJ....133..169D). The spectral type of V1101 Her was classified as G0+/-2V by LAMOST stellar spectra survey. The asymmetry of the R-band light curve of AD Phe obtained by McFarlane & Hilditch in 1987 (1987MNRAS.227..381M) is explained by a cool spot on the primary component.2017AJ....154..260Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/154/260CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/other/IBVS/5438 : 162-nd list of minima of eclipsing binariesJ/other/IBVS/5543 : 163-nd list of minima of eclipsing binariesJ/A+A/528/A90 : SuperWASP short period eclipsing binaries (Norton+, 2011)J/MNRAS/412/1787 : Physical parameters of 62 eclipsing binaries (Deb+, 2011)J/AJ/147/50 : Differential BVRI light curves of DV Psc (Pi+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/154/260https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/154/260http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/154/260https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/154/260https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/154/260http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/154/260GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/154/260/table1 (Observation Log)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/154/260/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/154/260/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/154/260/table1?GETtext/xml+votable180.050000true271.888583346.90977780.0055555555555555566/15037 354228.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/154/260?format=asciiInfraredOpticaldefaultJ/AJ/154/260/table4Minimum times and relevant parameters of V1101 Her & AD PheMethObservation method (1)meta.code;obscharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSystem name (V1101 Her, AD Phe, NSV 455)meta.id;meta.maincharJDMinimum time (HJD-2400000)dtime.epoch;stat.mindoublee_JD[0.0001/0.004]? Uncertainty in JDdstat.error;time.epochfloatnullableTypeMinimum type (P=Primary or S=Secondary)meta.codecharCycle[-41002.5/34385.0] Day in magnetic activity cycledmeta.number;time.perioddouble(O-C)1[-0.0368/0.0941] Observed-Calculated residuals 1dstat.fit.residualfloat(O-C)2[-0.0356/0.0297] 2nd Observed-Calculated residuals, 3rd body fittingdstat.fit.residualfloat(O-C)2s[-0.0328/0.03] 2nd Observed-Calculated residuals, sinusoidal fittingdstat.fit.residualfloatRef[1/23] Reference (2)meta.ref;pos.frameintJ/AJ/154/260/table1Observation LogSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTargetTarget type (Variable, Comparison or Check star)src.classcharNameTarget namemeta.id;meta.maincharprimaryO-CInteractive plotsmeta.ref.urlcharLCLight curvesmeta.ref.urlcharmoreindicates data for this target in Tables 2-4meta.ref.urlcharONameOther namemeta.idcharExpTimeExposure timesstime.duration;obs.exposurecharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainJmag[9.271/12.811]? 2MASS J band magnitudemagphot.mag;em.IR.JfloatnullableHmag[8.944/12.324]? 2MASS H band magnitudemagphot.mag;em.IR.HfloatnullableKsmag[8.871/13.27]? 2MASS K_s_ band magnitudemagphot.mag;em.IR.KfloatnullableRefReference (2006, Cat. VII/233)meta.ref;pos.framecharJ/AJ/154/260/table2BVRI Photometric observational data for the three short-period eclipsing binariesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD-B? Heliocentric Julian Date of B band observationdtime.epochdoublenullableDBmag[-1.204/3.548]? Differential Bessel B band magnitudemagphot.mag;em.opt.B;arith.difffloatnullableHJD-V? Heliocentric Julian Date of V band observationdtime.epochdoublenullableDVmag[-1.296/3.065]? Differential Bessel V band magnitudemagphot.mag;em.opt.V;arith.difffloatnullableHJD-R? Heliocentric Julian Date of R band observationdtime.epochdoublenullableDRmag[-1.367/4.81]? Differential Bessel R band magnitudemagphot.mag;em.opt.R;arith.difffloatnullableHJD-I? Heliocentric Julian Date of I band observationdtime.epochdoublenullableDImag[-1.414/2.467]? Differential Bessel I band magnitudemagphot.mag;em.opt.I;arith.difffloatnullableNameSystem name (V1101 Her, AD Phe, NSV 455)meta.id;meta.maincharJ/AJ/154/260/table3Newly obtained light of minima times for the three short-period eclipsing binariesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSystem name (V1101 Her, AD Phe, NSV 455)meta.id;meta.maincharHJD-BminB band minimum time (HJD-2400000)dtime.epoch;stat.mindoublee_HJD-BminUncertainty in HJD-Bmindstat.errordoubleHJD-VminV band minimum time (HJD-2400000)dtime.epoch;stat.mindoublee_HJD-VminUncertainty in HJD-Vmindstat.errordoubleHJD-RminR band minimum time (HJD-2400000)dtime.epoch;stat.mindoublee_HJD-RminUncertainty in HJD-Rmindstat.errordoubleHJD-IminI band minimum time (HJD-2400000)dtime.epoch;stat.mindoublee_HJD-IminUncertainty in HJD-Imindstat.errordoubleHJD-BVRIminMean BVRI band minimum time (HJD-2400000)dtime.epoch;stat.mindoublee_HJD-BVRIminUncertainty in HJD-BVRImindstat.errordoubleTypeMinimum type (P=Primary or S=Secondary)meta.codechar