J/AJ/169/139ivo://CDS.VizieR/J/AJ/169/139doi:10.26093/cds/vizier/be-59-4bCDSXia Q.Wang X.Li K.Gao X.Guo F.Lin J.Liu C.Mo J.Peng H.,Liu Q.Xi G.Yan S.Jiang X.Zhang J.Song C.-Y.Shi J.Ma X.,Xiang D.Li W.2026-07-02T11:45:22Z2025-12-17T09:53:11ZCDS support team

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

cds-question@unistra.frradial-velocitymultiple-starsphotometryvisible-astronomyWith the development of wide-field surveys, a large amount of data on short-period W UMa contact binaries have been obtained. Continuous and uninterrupted light curves as well as high-resolution spectroscopic data are crucial in determining the absolute physical parameters. Targets with both TMTS light curves and LAMOST medium-resolution spectra were selected. The absolute physical parameters were inferred with the W-D code for 10 systems, all of them are W-type shallow or medium contact binaries. The O'Connell effect observed in the light curves can be explained by adding a spot on the primary or secondary component in the models. According to O-C analysis, the orbital periods exhibit a long-term increasing or decreasing trend, among which J0132, J1300, and J1402 show periodic variations that may be attributed to the presence of a third body or magnetic activity cycles. Spectral subtraction analysis revealed that the equivalent width of H{alpha} indicates strong magnetic activity in J0047, J0305, J0638, and J1402. Among the 10 selected binary systems, except for J0132 and J0913, the more massive components are found to be main-sequence stars while the less massive components have evolved off the main sequence. In J0132, both components are in the main sequence, whereas both components of J0913 lie above the terminal-age main sequence. Based on the relationship between orbital angular momentum and total mass for these two systems, as well as their low fill-out factors, it is possible that these two systems are newly formed contact binaries, having recently evolved from the detached configuration.2025AJ....169..139Xhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/169/139CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-)II/264 : ASAS Variable Stars in Southern hemisphere (Pojmanski+, 2002-2005)I/345 : Gaia DR2 (Gaia Collaboration, 2018)I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)V/156 : LAMOST DR7 catalogs (Luo+, 2019)J/AJ/106/2096 : Limb-darkening coefficients in binaries (Van Hamme 1993)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/ApJ/629/1055 : Evolution of close binary systems (Yakut+, 2005)J/MNRAS/373/1483 : W UMa type and CAB stars dynamical evolution (Eker+, 2006)J/other/IBVS/5731 : Minima and maxima of 816 variables (Hubscher+, 2006)J/AJ/133/255 : Light-curve and radial velocities of BD+42 2782 (Lu+, 2007)J/other/IBVS/5830 : Minima and maxima of 292 variables (Hubscher+, 2008)J/AJ/138/466 : NSVS variables automated classification (Hoffman+, 2009)J/other/IBVS/5941 : Minima and maxima of 292 variables (Hubscher+, 2010)J/other/IBVS/5918 : Minima and maxima of 452 variables (Hubscher+, 2010)J/ApJ/723/1469 : Flux calibrations and WZ Oph photometry (Wilson+, 2010)J/MNRAS/412/1787 : Physical parameters of 62 eclipsing binaries (Deb+, 2011)J/other/IBVS/5959 : Minima and maxima of 436 variables (Huebscher+, 2011)J/AJ/141/97 : SDSS DR7 M dwarfs (West+, 2011)J/other/RAA/11.181 : VR light curves of EI CVn (Yang, 2011)J/AJ/146/157 : Differential BVRI photometry of FI Boo (Christopoulou+, 2013)J/AJ/146/35 : BVR light curves of DZ Psc (Yang+, 2013)J/MNRAS/430/2029 : Initial masses of W UMa contact binaries (Yildiz+, 2013)J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)J/MNRAS/437/185 : W UMa-type contact binaries ages and masses (Yildiz, 2014)J/AJ/149/120 : Times of minimum light for TY UMa (Li+, 2015)J/ApJ/812/3 : MEarth mid-to-late M dwarfs rotation & kinematics (West+, 2015)J/MNRAS/465/4678 : 9380 contact binaries from CRTS VSC (Marsh+, 2017)J/AJ/154/260 : 3 short-period eclipsing binaries BVRI photometry (Pi+, 2017)J/AJ/156/241 : A first cat. of variable stars measured by ATLAS (Heinze+, 2018)J/AJ/156/90 : New cat. of APOGEE radial velocity standard stars (Huang+, 2018)J/AJ/156/102 : The TESS Input Catalog & Candidate Target List (Stassun+, 2018)J/ApJS/247/50 : Late-type contact binaries in CSS DR1 (Sun+, 2020)J/ApJS/246/9 : Stellar parameters of LAMOST stars using SLAM (Zhang+, 2020)J/ApJS/254/10 : Compilation of W UMa stars (Latkovic+, 2021)J/ApJ/922/122 : BVRcIc LCs of two contact binaries (Li+, 2021)J/AJ/162/13 : Parameters estimation for 173 eclipsing binaries (Li+, 2021)J/AJ/161/221 : Photometry & spectroscopy of 4 binaries stars (Panchal+, 2021)J/ApJS/256/14 : RVs from LAMOST MRS DR7 stellar spectra (Zhang+, 2021)J/AJ/164/202 : Extrem. Low Mass Ratio Contact Binar. I. 10 syst. (Li+, 2022)J/MNRAS/523/2172 : TMTS delta Scuti stars (Lin+, 2023)J/AJ/165/259 : TESS phot. & radial velocities for 6 K-binaries (Liu+, 2023)J/MNRAS/528/6997 : Minute-cadence Observations of the TMTS. V. (Guo+, 2024)J/ApJS/271/32 : ASAS-SN eclipsing contact binaries with Gaia DR3 (Li+, 2024)http://www.lamost.org/dr10/v1.0/ : LAMOST DR10 (2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/169/139https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/169/139http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/169/139https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/169/139https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/169/139http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/169/139GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/169/139/table1 (Photometric observation information of the ten targets)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/169/139/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/169/139/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/169/139/table1?GETtext/xml+votable180.050000true11.94139.5180.0055555555555555566/872 2621 2907 5514 5805 6546 6851 10406 10530 13419https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/169/139?format=asciiOpticaldefaultJ/AJ/169/139/table1Photometric observation information of the ten targetsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDTsinghua University-Ma Huateng Telescopes for Survey (TMTS; J/MNRAS/528/6997) catalog identifiermeta.id;meta.maincharNameName of the targetmeta.idcharprimaryVSXDisplay the Variable Star Index catalog (B/vsx) data within 3"meta.ref.urlcharGaiaDisplay the Gaia DR2 (I/345) and DR3 (I/355) data within 2"meta.ref.urlcharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainDateDate of observation (UT)'Y:M:D'time.epoch;obsnullableSimbadNameSimbad column added by the CDSmeta.idcharnullablePerVSX[0.24/0.41] Orbital period from VSX (B/vsx)dtime.period;src.orbitaldoublePerTMTS[0.24/0.41] Orbital period from TMTS (J/MNRAS/528/6997) (1)dtime.period;src.orbitaldoubleLmag[11.8/14.8] Median L-band (390-900nm) magnitude from TMTS (J/MNRAS/528/6997)magphot.mag;em.optfloatGMag[3.5/6.2] Absolute Gaia DR2 (I/345) G-band magnitudemagphys.magAbsfloatBP-RP[0.6/1.32] BP-RP colour index from Gaia DR2 (I/345)magphot.color;em.opt.B;em.opt.RfloatnLRS[0/3] Number of exposures from LAMOST DR10 low-resolution (LR) spectrameta.numberintnMRS[3/100] Number of exposures from LAMOST DR10 medium-resolution (MR) spectrameta.numberintTypeVariability type from VSX (B/vsx) (2)meta.note;src.varcharnRVNumer of radial velocity measurements for this star (link to Table 3)meta.numberintnullablenTminNumber of times of minimum for this star (link to Table 4)meta.numberintnullablePlotRadial velocity curvesmeta.ref.urlcharJ/AJ/169/139/table3Radial velocities of the ten targetsNameName of targetmeta.id;meta.maincharprimaryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[58410/59679] Barycentric Julian Date - 2400000dtime.epochdoublePhasePhasetime.phasedoubleRV1[-267.8/250.9] Radial velocity of primary starkm/sspect.dopplerVelocfloate_RV1[0.41/6.89] Uncertainty in RV1 (1)km/sstat.error;spect.dopplerVelocfloatRV2[-169.4/181.1]? Radial velocity of secondary starkm/sspect.dopplerVelocfloatnullablee_RV2[0.5/4.5]? Uncertainty in RV2 (1)km/sstat.error;spect.dopplerVelocfloatnullableJ/AJ/169/139/table4Times of minimum for the ten targetsNameName of targetmeta.id;meta.maincharprimaryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[51277/59963] Time of minimum; Barycentric Julian Date - 2400000dtime.epochdoublee_BJD[4e-5/0.007] Uncertainty in BJDdstat.error;time.epochdoubleMethodMethod used, CCD or photo-electric (pe) photometrymeta.code;obscharRefReference (1)meta.refchar