Minute-cadence Observations of the TMTS. V. J/MNRAS/528/6997 ivo://CDS.VizieR/J/MNRAS/528/6997 doi:10.26093/cds/vizier.75286997 CDS Guo F. Lin J. Wang X. Chen X. Li T. Chen L. Xia Q. Mo J. Xi G.,Zhang J. Liu Q. Jiang X. Yan S. Peng H. Liu J. Li W. Lin W.,Xiang D. Ma X. Cai Y. 2025-02-13T20:15:40Z 2024-11-15T11:58:17Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr surveys variable-stars visible-astronomy Periodic variables are always of great scientific interest in astrophysics. Thanks to the rapid advancement of modern large-scale time-domain surveys, the number of reported variable stars has experienced substantial growth for several decades, which significantly deepened our comprehension of stellar structure and binary evolution. The Tsinghua University-Ma Huateng Telescopes for Survey (TMTS) has started to monitor the LAMOST sky areas since 2020, with a cadence of 1 minute. During the period from 2020 to 2022, this survey has resulted in densely sampled light curves for ~30000 variables of the maximum powers in the Lomb-Scargle periodogram above the 5{sigma} threshold. In this paper, we classified 11,638 variable stars into 6 main types using XGBoost and Random Forest classifiers with accuracies of 98.83% and 98.73%, respectively. Among them, 5301 (45.55%) variables are newly discovered, primarily consisting of delta Scuti stars, demonstrating the capability of TMTS in searching for short-period variables. We cross-matched the catalogue with Gaia's second Data Release (DR2) and LAMOST's seventh Data Release (DR7) to obtain important physical parameters of the variables. We identified 5504 delta Scuti stars (including 4876 typical delta Scuti stars and 628 high-amplitude delta Scuti stars), 5899 eclipsing binaries (including EA-, EB- and EW-type) and 226 candidates of RS Canum Venaticorum. Leveraging the metal abundance data provided by LAMOST and the Galactic latitude, we discovered 8 candidates of SX Phe stars within the class of "delta Scuti stars". Moreover, with the help of Gaia color-magnitude diagram, we identified 9 ZZ ceti stars. 2024MNRAS.528.6997G https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/528/6997 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to B/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-) I/345 : Gaia DR2 (Gaia Collaboration, 2018) V/156 : LAMOST DR7(Luo+, 2019) J/MNRAS/523/2172 : TMTS delta Scuti stars (Lin+, 2023) J/MNRAS/523/2193 : TMTS flare study from the first two years (Liu+, 2023) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/528/6997 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/528/6997 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/528/6997 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/528/6997 https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/528/6997 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/528/6997 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/MNRAS/528/6997/dscthads (Catalogue for typical delta Scuti stars (DSCT) and high-amplitude delta Scuti stars (HADS) identified from TMTS observations (table 5)) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/528/6997/dscthads? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/528/6997/dscthads? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/528/6997/dscthads? GET text/xml+votable 180.0 50000 true 0.012302131 57.92757685 0.005555555555555556 Cone search capability for table J/MNRAS/528/6997/ea-eb-ew (Catalogue for EA-, EB- and EW-type eclipsing binaries identified from TMTS observations (table 6)) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/528/6997/ea-eb-ew? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/528/6997/ea-eb-ew? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/528/6997/ea-eb-ew? GET text/xml+votable 180.0 50000 true 0.000790068 32.14644594 0.005555555555555556 Cone search capability for table J/MNRAS/528/6997/rs (Catalogue for RS CVn candidates identified from TMTS observations (table 7)) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/528/6997/rs? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/528/6997/rs? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/528/6997/rs? GET text/xml+votable 180.0 50000 true 0.652615077 31.25423437 0.005555555555555556 Cone search capability for table J/MNRAS/528/6997/zz (Catalogue for ZZ Cetis identified from TMTS observations (table 8)) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/528/6997/zz? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/528/6997/zz? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/528/6997/zz? 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31625 31628 31634 31642 31644-31645 31653 31666 31668-31669 31673 31726 31747 31753 31762-31763 31779 31784 32288 32457 32475-32476 32479 32484 32498 32500 32695 32703 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/528/6997?format=ascii Optical default J/MNRAS/528/6997/dscthads Catalogue for typical delta Scuti stars (DSCT) and high-amplitude delta Scuti stars (HADS) identified from TMTS observations (table 5) recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Name TMTS identifier (TMTS JHHMMSSss+DDMMSSs) meta.id;meta.main char RAJ2000 Right Ascension (J2000) deg pos.eq.ra;meta.main DEJ2000 Declination (J2000) deg pos.eq.dec;meta.main Period Dominant period corresponding to maximum power in Lomb-Scargle periodogram h time.period;stat.max double Amp Peak-to-peak amplitude mag src.var.amplitude double R21 Amplitude ratio of a2/a1 src.var.amplitude;arith.ratio double Phi21 Phase difference of phi2-2*phi1 stat.fit.param double GMAG ? Absolute magnitude derived from Gaia DR2 database mag phys.magAbs double nullable (Bp-Rp)0 ? Dereddening color derived from Gaia DR2 database mag phot.color;em.opt.B;em.opt.R double nullable SpType Spectral class provided by LAMOST DR7 src.spType char VSXtype VSX variability type meta.note char Teff ? Mean effective temperature provided by LAMOST DR7 K phys.temperature.effective;stat.mean double nullable logg ? Mean surface gravity provided by LAMOST DR7 log(cm.s**-2) phys.gravity;stat.mean double nullable Type Type of the variable meta.code;src.var char
J/MNRAS/528/6997/ea-eb-ew Catalogue for EA-, EB- and EW-type eclipsing binaries identified from TMTS observations (table 6) recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Name TMTS identifier (TMTS JHHMMSSss+DDMMSSs) meta.id;meta.main char RAJ2000 Right Ascension (J2000) deg pos.eq.ra;meta.main DEJ2000 Declination (J2000) deg pos.eq.dec;meta.main Period Dominant period corresponding to maximum power in Lomb-Scargle periodogram h time.period;stat.max double R21 Amplitude ratio of a2/a1 src.var.amplitude;arith.ratio double Phi21 Phase difference of phi2-2*phi1 stat.fit.param double GMAG ? Absolute magnitude derived from Gaia DR2 database mag phys.magAbs double nullable (Bp-Rp)0 ? Dereddening color derived from Gaia DR2 database mag phot.color;em.opt.B;em.opt.R double nullable SpType Spectral class provided by LAMOST DR7 src.spType char VSXtype VSX variability type meta.note char Teff ? Mean effective temperature provided by LAMOST DR7 K phys.temperature.effective;stat.mean double nullable logg ? Mean surface gravity provided by LAMOST DR7 log(cm.s**-2) phys.gravity;stat.mean double nullable Type Type of the variable meta.code;src.var char Amp Peak-to-peak amplitude mag src.var.amplitude double
J/MNRAS/528/6997/rs Catalogue for RS CVn candidates identified from TMTS observations (table 7) RAJ2000 Right Ascension (J2000) deg pos.eq.ra;meta.main DEJ2000 Declination (J2000) deg pos.eq.dec;meta.main Period Dominant period corresponding to maximum power in Lomb-Scargle periodogram h time.period;stat.max double Amp Peak-to-peak amplitude mag src.var.amplitude double R21 Amplitude ratio of a2/a1 src.var.amplitude;arith.ratio double Phi21 Phase difference of phi2-2*phi1 stat.fit.param double SpType Spectral class provided by LAMOST DR7 src.spType char VSXtype VSX variability type meta.note char Teff ? Mean effective temperature provided by LAMOST DR7 K phys.temperature.effective;stat.mean double nullable logg ? Mean surface gravity provided by LAMOST DR7 log(cm.s**-2) phys.gravity;stat.mean double nullable Type Type of the variable meta.code;src.var char recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Name TMTS identifier (TMTS JHHMMSSss+DDMMSSs) meta.id;meta.main char GMAG ? Absolute magnitude derived from Gaia DR2 database mag phys.magAbs double nullable (Bp-Rp)0 ? Dereddening color derived from Gaia DR2 database mag phot.color;em.opt.B;em.opt.R double nullable
J/MNRAS/528/6997/zz Catalogue for ZZ Cetis identified from TMTS observations (table 8) DEJ2000 Declination (J2000) deg pos.eq.dec;meta.main Period Dominant period corresponding to maximum power in Lomb-Scargle periodogram h time.period;stat.max double Amp Peak-to-peak amplitude mag src.var.amplitude double R21 Amplitude ratio of a2/a1 src.var.amplitude;arith.ratio double Phi21 Phase difference of phi2-2*phi1 stat.fit.param double GMAG ? Absolute magnitude derived from Gaia DR2 database mag phys.magAbs double nullable (Bp-Rp)0 ? Dereddening color derived from Gaia DR2 database mag phot.color;em.opt.B;em.opt.R double nullable SpType Spectral class provided by LAMOST DR7 src.spType char VSXtype VSX variability type meta.note char Teff ? Mean effective temperature provided by LAMOST DR7 K phys.temperature.effective;stat.mean double nullable logg ? Mean surface gravity provided by LAMOST DR7 log(cm.s**-2) phys.gravity;stat.mean double nullable Type Type of the variable meta.code;src.var char Name TMTS identifier (TMTS JHHMMSSss+DDMMSSs) meta.id;meta.main char RAJ2000 Right Ascension (J2000) deg pos.eq.ra;meta.main recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int