J/MNRAS/475/478ivo://CDS.VizieR/J/MNRAS/475/478doi:10.26093/cds/vizier.74750478CDSQian S.-B.Li L.-J.He J.-J.Zhang J.Zhu L.-Y.Han Z.-T.2024-08-18T20:18:09Z2021-04-26T14:31:14ZCDS support team

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

cds-question@unistra.frvariable-starsradial-velocityAbout 766 {delta} Scuti stars were observed by LAMOST by 2017 June 16. Stellar atmospheric parameters of 525 variables were determined, while spectral types were obtained for all samples. In the paper, those spectroscopic data are catalogued. We detect a group of 131 unusual and cool variable stars (UCVs) that are distinguished from the normal {delta} Scuti stars (NDSTs). On the H-R diagram and the logg-T diagram, the UCVs are far beyond the red edge of pulsational instability trip. Their effective temperatures are lower than 6700K with periods in the range from 0.09 to 0.22d. NDSTs have metallicity close to that of the Sun as expected, while UCVs are slightly metal poor than NDSTs. The two peaks on the distributions of the period and stellar atmospheric parameters are all caused by the existence of UCVs. When those UCVs are excluded, it is discovered that the effective temperature, the gravitational acceleration, and the metallicity all are correlated with the pulsating period for NDSTs and their physical properties and evolutionary states are discussed. Detection of those UCVs indicates that about 25 per cent of the known {delta} Scuti stars may be misclassified. However, if some of them are confirmed to be pulsating stars, they will be a new-type pulsator and their investigations will shed light on theoretical instability domains and on the theories of interacting between the pulsation and the convection of solar-type stars. Meanwhile, 88 {delta} Scuti stars are detected to be the candidates of binary or multiple systems.2018MNRAS.475..478Qhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/475/478CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/153 : LAMOST DR4 catalogs (Luo+, 2018)V/164 : LAMOST DR5 catalogs (Luo+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/475/478https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/475/478http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/475/478https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/475/478https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/475/478http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/475/478GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/475/478/table1 (Mean stellar atmospheric parameters for 32 delta Scuti stars observed 4 times or more and their standard errors)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/475/478/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/475/478/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/475/478/table1?GETtext/xml+votable180.050000true293.059291746.90580560.005555555555555556Cone search capability for table J/MNRAS/475/478/table2 (Stellar atmospheric parameters for the 131 UCVs detected by LAMOST)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/475/478/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/475/478/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/475/478/table2?GETtext/xml+votable180.050000true183.1037527.380080.005555555555555556Cone search capability for table J/MNRAS/475/478/table3 (Catalogue of NDSTs observed by LAMOST)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/475/478/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/475/478/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/475/478/table3?GETtext/xml+votable180.050000true13.8256323.163720.005555555555555556Cone search capability for table J/MNRAS/475/478/table4 (10 delta Scuti variable stars with the highest metallicities)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/475/478/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/475/478/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/475/478/table4?GETtext/xml+votable180.050000true302.006730.878960.005555555555555556Cone search capability for table J/MNRAS/475/478/table5 (50 delta Scuti pulsating stars with the difference of radial velocity larger than 15km/s)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/475/478/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/475/478/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/475/478/table5?GETtext/xml+votable180.050000true296.386541740.94497220.005555555555555556Cone search capability for table J/MNRAS/475/478/table6 (38 delta Scuti variable stars with radial velocities higher than 70km/s)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/475/478/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/475/478/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/475/478/table6?GETtext/xml+votable180.050000true203.047208315.93288890.005555555555555556Cone search capability for table J/MNRAS/475/478/table7 (LAMOST observations of delta Scuti variable stars without periods listed in VSX)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/475/478/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/475/478/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/475/478/table7?GETtext/xml+votable180.050000true129.54057.225830.005555555555555556Cone search capability for table J/MNRAS/475/478/lamost (Catalogue of delta Scuti pulsating stars observed by LAMOST (for 774 individual stars))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/475/478/lamost?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/475/478/lamost?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/475/478/lamost?GETtext/xml+votable180.050000true13.82562523.16372220.0055555555555555565/3693-3694 3704 3706 3729 3733 3737 3743 3780-3781 3792 7953 6/60 222 275 294 313 318-319 333 343 357 407 463 479 550 757 780 800 1086 1286 1331 1334 1336 1355 1425 1427-1428 1464 1525 1576 1663 1684 1703 1754 1778 1846 1930 1939 1946 2056 2092 2154-2155 2177 2184 2357 2405 2418 2632 2641 2726 2871 2918 3003 3006 3075 3119 3138 3204-3205 3207 3213 3215 3219 3255 3336 4105 4115 4189-4190 4230 4277 4307 4322 4328 4334 4343 4351 4452 4512-4513 4573 4591 4646 4650 4660 4679 4698 4705 4720-4721 4782 4797 4814 4911 4913 5056 5185 5195 5243 5269 5316 5394 5501 5638 5731 5836 6019 6149 6221 6226 6278 6288 6511 6601 6638 6671 6760 6787 6808 6821 6844 6866 6894 6980 7005 7036 7040 7120 7333 8225 8229 8269 8284 8307 8322 8351 8384 8488 8496 8499 8533 8547 8552 8576 8621 8628 8757 8809 8848 8877 9229 9233 9266 9325 9345 9368 9371 9386 9390 9405 9747 9784 9857 9863 9949 10036 10041 10044 10155 10313 10372 10399 10566 10568 10594 10617 10640 10716 10768 10790 10803 10887 10896 10953 11158 11303 12290 12372 12493 12534 12778 13306 13328 13352 13614 13721 13768 13797 13868 14137 14195 14199 14275 14395 14423 14567 14573 14575 14577-14581 14583-14586 14589 14602 14694 14730-14731 14733-14735 14746 14749-14750 14752-14753 14755-14757 14759-14760 14762-14765 14767 14769-14771 14781-14783 14792 14794-14795 14830 14921-14922 14924-14925 14928-14929 14931 14938-14942 14945 14947 14952 14954 14956 14958 14960-14961 14963 14965 14967-14969 14971 15041 15043 15057 15060-15061 15081 15096 15104-15105 15107 15109-15111 15113-15115 15118-15119 15128-15129 15133 15136-15138 15140-15141 15143 15145-15146 15148-15150 15153-15154 15172-15173 15200 18035 18038 18098 18225 18257 18324 18368 18412 18683 18797 18889 18959 19138 19149 19243 19307 19363 19387 19407 19438 19899 19922 19943 19975 20065 20097 20163 20207 20222 20276 20361 20476 21432 21493 21749 21761 21806 21821 21851 21859 21873 21883 21926 21959 21967 22074 22078 22125 22161 22174 22181 22213 22251 22264 22318 22348 22371 22435 22482 22513 22889 23112 23159 23231 23273 23337 23531 23548 23637 23736-23737 23760 23811 23835 23902-23903 23920 23922 23954 23981 23984 23995 24001 24007 24051 24061 24183 24293 24324 24338 24343 24348 24355 24358-24359 24368 24371 24381-24382 24424 24469 24492 24506 24517 24522 25565 25844 25919 25946 26049 26132 26188 26247 26249 26256 26296 26310 26328 26421 26483 26486 26536 26609 26866 26982 27015 27018 27020 27059 27072 27117 27287 27303 27344 27411 27496 27536 27547 27550 27607 27661 27749 27758 27819 27905 27935 28018 28097 28136 28203 28235 28239 28288 28383 28425 28490 28496 28595 28628 30405 30443 31062 31109 31292 31295 31357 31451-31452 31489 31491 31510 31582 31586 31612 31688 31704 31734 31801 31809 31811 31848 31875 31950 32164 32274 32287 32342 32464 32505 32553 32749 36853 40945 45050 49018https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/475/478?format=asciidefaultJ/MNRAS/475/478/table1Mean stellar atmospheric parameters for 32 delta Scuti stars observed 4 times or more and their standard errorsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameVariable star identifiermeta.id;meta.maincharPerPerioddtime.perioddoubleNNumber of observationmeta.numberintTAverage temperatureKphys.temperature;stat.meaninte_Trms uncertainty on TKstat.errorintloggAverage gravitational accelerationlog(cm.s**-2)phys.gravityfloate_loggrms uncertainty on logglog(cm.s**-2)stat.errorfloat[Fe/H]Average metallicityphys.abund.Z;stat.meanfloate_[Fe/H]rms uncertainty on [Fe/H]stat.error;phys.abund.FefloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/MNRAS/475/478/table2Stellar atmospheric parameters for the 131 UCVs detected by LAMOSTrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameVariable star identifiermeta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainPeriod? Orbital perioddtime.perioddoublenullableSpTypeSpectral typesrc.spTypecharTeffEffective temperatureKphys.temperature.effectiveinte_Teff? Error of the effective temperatureKstat.error;phys.temperature.effectiveintnullableloggGravitational accelerationlog(cm.s**-2)phys.gravityfloate_logg? Error of the gravitational acceleration logglog(cm.s**-2)stat.errorfloatnullable[Fe/H]Metallicityphys.abund.Zfloate_[Fe/H]? Error of metallicitystat.error;phys.abund.FefloatnullableJ/MNRAS/475/478/table3Catalogue of NDSTs observed by LAMOSTSpTypeSpectral typesrc.spTypecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameVariable star identifiermeta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainPeriod? Orbital perioddtime.perioddoublenullableTeffEffective temperatureKphys.temperature.effectiveinte_Teff? Error of the effective temperatureKstat.error;phys.temperature.effectiveintnullableloggGravitational accelerationlog(cm.s**-2)phys.gravityfloate_logg? Error of the gravitational acceleration logglog(cm.s**-2)stat.errorfloatnullable[Fe/H]Metallicityphys.abund.Zfloate_[Fe/H]? Error of metallicitystat.error;phys.abund.FefloatnullableJ/MNRAS/475/478/table410 delta Scuti variable stars with the highest metallicitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameVariable star identifiermeta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainPerPerioddtime.perioddoubleSpTypeSpectral typesrc.spTypecharTeffEffective temperatureKphys.temperature.effectiveintloggGravitational accelerationlog(cm.s**-2)phys.gravityfloat[Fe/H]Metallicityphys.abund.ZfloatRVRadial velocitykm/sphys.veloc;pos.heliocentricintSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/475/478/table550 delta Scuti pulsating stars with the difference of radial velocity larger than 15km/sNNumber of observationmeta.numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameVariable star identifiermeta.id;meta.maincharPerPerioddtime.perioddoubleDate1Lower value of observation date intervaltime.epoch;obs;stat.minnullableDate2Upper value of observation date intervaltime.epoch;obs;stat.maxnullableTeffEffective temperatureKphys.temperature.effectiveintloggGravitational accelerationlog(cm.s**-2)phys.gravityfloat[Fe/H]Metallicityphys.abund.ZfloatVLowLower velocity valuekm/sphys.velocfloatVHighHight velocity valuekm/sphys.velocfloatDVVelocity differencekm/sphys.veloc;arith.difffloat_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/MNRAS/475/478/table638 delta Scuti variable stars with radial velocities higher than 70km/sNameVariable star identifiermeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPerPerioddtime.perioddoubleSpTypeSpectral typesrc.spTypecharTeffEffective temperatureKphys.temperature.effectiveintloggGravitational accelerationlog(cm.s**-2)phys.gravityfloat[Fe/H]Metallicityphys.abund.ZfloatRVRadial velocitykm/sphys.veloc;pos.heliocentricfloat_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/MNRAS/475/478/table7LAMOST observations of delta Scuti variable stars without periods listed in VSXrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameVariable star identifiermeta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainObs.dateObservation datetime.epoch;obsnullableSpTypeSpectral typesrc.spTypecharTeffEffective temperatureKphys.temperature.effectiveintloggGravitational accelerationlog(cm.s**-2)phys.gravityfloat[Fe/H]Metallicityphys.abund.ZfloatRVRadial velocitykm/sphys.veloc;pos.heliocentricfloatSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/475/478/lamostCatalogue of delta Scuti pulsating stars observed by LAMOST (for 774 individual stars)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameVariable star identifiermeta.id;meta.maincharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainVTypeVariability type, as in GCVS catalogmeta.idcharPorb? Orbital period in daysdtime.perioddoublenullablen_PorbUncertainty flag on Porbmeta.notecharDistDistance between LAMOST and the input objectarcsecpos.angDistancefloatDateObserved datetime.epochnullableSpTypeSpectral typesrc.spTypecharTeff? Effective temperatureKphys.temperature.effectivefloatnullablee_Teff? Error of the effective temperatureKstat.error;phys.temperature.effectivefloatnullablelogg? Gravitational accelerationlog(cm.s**-2)phys.gravityfloatnullablee_logg? Error of the gravitational acceleration logglog(cm.s**-2)stat.errorfloatnullable[Fe/H]? Metallicityphys.abund.Zfloatnullablee_[Fe/H]? Error of metallicitystat.error;phys.abund.FefloatnullableRV? Radial velocitykm/sphys.veloc;pos.heliocentricfloatnullablee_RV? Error of radial velocitykm/sstat.errorfloatnullable