J/AJ/161/221ivo://CDS.VizieR/J/AJ/161/221doi:10.26093/cds/vizier.51610221CDSPanchal A.Joshi Y.C.2022-03-16T11:53:19Z2021-09-07T08:11:45ZCDS support team

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

cds-question@unistra.frmultiple-starsinfrared-photometryvisible-astronomyphotometryspectroscopyWe present the photometric and spectroscopic analysis of four W-UMa binaries J015829.5+260333 (hereinafter as J0158), J030505.1+293443 (hereinafter as J0305), J102211.7+310022 (hereinafter as J1022), and KW-Psc. The VRcIc band photometric observations are carried out with the 1.3m Devasthal Fast Optical Telescope (DFOT). For low-resolution spectroscopy, we used the 2m Himalayan Chandra Telescope (HCT) as well as the archival data from the 4m LAMOST survey. The systems J0158 and J0305 show a period increase rate of 5.26({+/-}1.72)x10^-7^days/yr and 1.78({+/-}1.52)x10^-6^days/yr, respectively. The period of J1022 is found to be decreasing with a rate of 4.22({+/-}1.67)x10^-6^days/yr. The period analysis of KW-Psc displays no change in its period. The PHOEBE package is used for the light-curve modeling and basic parameters are evaluated with the help of the GAIA parallax. The asymmetry of light curves is explained with the assumption of cool spots at specific positions on one of the components of the system. On the basis of temperatures, mass ratios, fill-out factors, and periods, the system J1022 is identified as a W-subtype system while the others show some mixed properties. To probe the chromospheric activities in these W-UMa binaries, their spectra are compared with the known inactive stars' spectra. The comparison shows emission in H{alpha}, H{beta}, and CaII. To understand the evolutionary status of these systems, the components are plotted in mass-radius and mass-luminosity planes with other well characterized binary systems. The secondary components of all the systems are away from ZAMS, which indicates that the secondary is more evolved than the primary component.2021AJ....161..221Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/161/221CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/336 : AAVSO Photometric All Sky Survey (APASS) DR9 (Heden+, 2015)II/366 : ASAS-SN catalog of variable stars (Jayasinghe+, 2018-2020)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)V/128 : Chromospherically Active Binaries. Third version (Eker+, 2008)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/A+AS/142/275 : Stellar activity of late-type stars (Strassmeier+ 2000)J/ApJS/152/251 : Indo-US library of coude feed stellar spectra (Valdes+, 2004)J/ApJS/152/261 : Chromospheric Ca II emission in nearby stars (Wright+, 2004)J/MNRAS/357/497 : Kinematics of W UMa-type binaries (Bilir+, 2005)J/ApJS/193/1 : UBVRIJHK color-temperature calibration (Worthey+, 2011)J/A+A/541/A41 : Basic tracks at Zinit=0.006 (Mowlavi+, 2012)J/MNRAS/430/2029 : Initial masses of W UMa type contact binaries (Yildiz+,2013)J/ApJS/213/9 : Catalina Surveys periodic variable stars (Drake+, 2014)J/ApJS/230/16 : 05 through L3 empirical stellar spectra SDSS (Kesseli+,2017)J/ApJS/237/28 : WISE catalog of periodic variable stars (Chen+, 2018)J/AJ/156/241 : First catalog variable stars measured ATLAS (Heinze+, 2018)J/ApJS/247/50 : Late-type contact binaries in CSS DR1 (Sun+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/161/221https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/161/221http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/161/221https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/161/221https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/161/221http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/161/221GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/161/221/table1 (Basic information about the sources taken from different surveys)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/161/221/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/161/221/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/161/221/table1?GETtext/xml+votable180.050000true29.62291726.0591670.0055555555555555566/872 2116 5277 18923https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/161/221?format=asciiOpticalInfrareddefaultJ/AJ/161/221/table1Basic information about the sources taken from different surveysSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar observedmeta.id;meta.maincharprimaryRAJ2000[1/22] Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000[5/31] Degree of declination (J2000)pos.eq.dec;meta.mainPer[0.22/0.26] Perioddtime.perioddoubleVmag[12.16/12.71] V-band magnitudemagphot.mag;em.opt.VfloatB-V[0.62/0.98] B-V color excess (1)magphot.color;em.opt.B;em.opt.VfloatJ-K[0.3/0.67] J-K color excess (1)magphot.color;em.IR.J;em.IR.Kfloatplx[1.44/7.06] Parallax (1)maspos.parallax.trigfloatNobsNumber of observations for this starmeta.numberintnullableO-CInteractive Plotmeta.ref.urlcharJ/AJ/161/221/table5TOMs estimated for J0158, J0305, J1022 and KW Psc using data from different surveysrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar IDmeta.id;meta.maincharHJD[3228/8799] Time of minimum light; HJD-2450000dtime.epochdoublee_HJD[0/0.006] Error on HJDdstat.error;time.epochdoubleeclipse[ps] primary or secondary eclipsemeta.id;stat.fit.paramcharCycle[-17365/19082] Cycleobs.proposal.cycledoubleO-C1[-0.06/0.08] Residual 1dstat.fit.residualdoubleO-C2[-0.02/0.01] Residual 2dstat.fit.residualdoubleRefReferences (1)meta.refchar