J/AJ/163/250ivo://CDS.VizieR/J/AJ/163/250doi:10.26093/cds/vizier.51630250CDSYang Y.Yuan H.Wang S.Dai H.2022-11-25T13:33:25Z2022-10-28T07:15:27ZCDS support team

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

cds-question@unistra.frmultiple-starseclipsing-binary-starsinfrared-photometryvisible-astronomybroad-band-photometryWe presented new photometry for four short-period late-type binaries, observed by three small telescopes in China from 2020 September to 2021 December. Seven sets of light curves (including the TESS data for FY Boo) were analyzed by using the W-D method. Three binaries (V0576 Peg, V0873 Per, and FY Boo) are W-type binaries with q~2.5, while KW Psc is an A-type binary with q~0.43. Max.I-Max.II is up to 10% of variable light amplitude for the asymmetric light curves, which are modeled by a dark spot on the surface of the more massive component. Photometric results imply the existence of movement and evolution of the cool spot. From the temperature-luminosity and mass-luminosity diagrams, the more massive components are a bit evolved main-sequence stars, while the less massive ones are oversized and overluminous owing to energy exchange. Orbital period analyses indicate that the cyclic oscillations occur in the (O-C) curves. Their modulated periods approach 11yr, which may preferably result from the magnetic activity cycle for four late-type contact binaries. With angular momentum loss through magnetic braking, these short-period contact binaries may evolve into deep-contact configurations.2022AJ....163..250Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/163/250CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/gcvs : General Catalogue of Variable Stars (Samus+, 2007-2017)II/287 : Northern Sky Variability Survey (NSVS) (Wozniak+, 2004)I/345 : Gaia DR2 (Gaia Collaboration, 2018)V/146 : LAMOST DR1 catalogs (Luo+, 2015)J/AJ/106/2096 : Limb-darkening coefficients in binaries (Van Hamme 1993)J/A+A/311/523 : Photometry of W UMa (Maceroni+, 1996)J/AcA/48/35 : All Sky Automated Survey variable stars (Pojmamski 1998)J/AJ/119/1901 : ROTSE all-sky surveys for variable stars (Akerlof+, 2000)J/A+A/406/535 : Hamburg/RASS Cat. of optical ident. V3.0 (Zickgraf+, 2003)J/AcA/54/207 : Ephemerids of eclipsing binaries (Kreiner, 2004)J/ApJ/629/1055 : Evolution of close binary systems (Yakut+, 2005)J/other/IBVS/5731 : Minima and maxima of 816 variables (Hubscher+, 2006)J/AcA/58/405 : ASAS eclipsing binaries RASS counterpart (Szczygiel+, 2008)J/AJ/138/466 : NSVS variables automated classification (Hoffman+, 2009)J/other/IBVS/5874 : Minima and maxima of 299 variables (Hubscher+, 2009)J/other/RAA/9.1035 : RV light curves of 1RXS J201607.0+251645 (Li+, 2009)J/AJ/138/680 : BVI TX Cnc light curves (Zhang+, 2009)J/other/IBVS/5959 : Minima and maxima of 436 variables (Huebscher+, 2011)J/AJ/146/35 : BVR light curves of DZ Psc (Yang+, 2013)J/MNRAS/430/2029 : Initial masses of WUMa type contact binaries (Yildiz+, 2013)J/AJ/148/126 : Light curves of four overcontact binaries (Caliskan+, 2014)J/AJ/147/50 : Differential BVRI light curves of DV Psc (Pi+, 2014)J/other/NewA/36.50 : V873 Per BVR light curves (Kriwattanawong+, 2015)J/AJ/151/68 : Kepler Mission. VII. Eclipsing binaries in DR3 (Kirk+, 2016)J/AJ/154/260 : 3 short-period eclipsing binaries BVRI photometry (Pi+, 2017)J/ApJS/249/18 : The ZTF catalog of periodic variable stars (Chen+, 2020)J/other/RAA/20.163 : Contact binaries in LAMOST DR7 (Qian+, 2020)J/AJ/160/104 : EpsilonCrA components radial&orbital velocity (Rucinski, 2020)J/ApJS/254/10 : Compilation of W UMa stars (Latkovic+, 2021)J/AJ/162/63 : ZTF lightcurve 51 stars in 12 globular clusters (Ngeow+, 2021)J/AJ/161/221 : Photometry & spectroscopy of 4 binaries stars (Panchal+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/163/250https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/163/250http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/163/250https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/163/250https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/163/250http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/163/250GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/163/250/minimumsLight minimum times for V0576 Peg, KW Psc, V0873 Per and FY BooIDStar identifiermeta.id;meta.maincharO-CiInitial residualdstat.fit.residualfloatO-Cf? Final residualdstat.fit.residualfloatnullableRefReferences usedmeta.ref;instr.setupcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Datedtime.epochdoublee_HJD? Error on HJDdstat.error;time.epochfloatnullableEpochEpoch timetime.epochdoubleMetMethod usedmeta.notecharMinMinimum eclipse-depth (I or II)meta.codecharJ/AJ/163/250/refsReferences used in this workrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.notecharAuthorMain authormeta.bib.authorcharBIBBIBcodemeta.bib.bibcodecharCat.Catalog in Viziermeta.notecharNoteAdditional note or commentmeta.notechar