J/PASP/133/H4201ivo://CDS.VizieR/J/PASP/133/H4201doi:10.26093/cds/vizier.61343201CDSPoro A.Paki E.Mazhari G.Sarabi S.Kahraman Alicavus F.,Ahangarani Farahani F.Guilani H.Popov A.A.Zubareva A.M.,Zarei Jalalabadi B.Nourmohammad M.Davoudi F.Sabaghpour Arani Z.,Ghalee A.2025-09-09T14:15:11Z2022-01-17T13:22:34ZCDS support team

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

cds-question@unistra.frvariable-starsccd-photometryephemeridesThe multi-color CCD photometric study of 27 delta Scuti stars is presented. By using approximately three years of photometric observations, we obtained the times of maxima and magnitude changes during the observation time interval for each star. The ephemeris of our delta Scuti star was calculated based on the Markov Chain Monte Carlo (MCMC) method using the observed times of maxima and the period of star' oscillations. We used the Gaia EDR3 parallaxes to calculate the luminosities and also the absolute magnitudes of these delta Scuti stars. The fundamental physical parameters of all studied stars, such as mass and radius, were estimated. We determined the pulsation modes of the stars based on the pulsation constants. Moreover, the period-luminosity relation of delta Scuti stars was investigated and discussed. Then, by using a machine learning classification, new P-L relations for fundamental and overtone modes are presented.2021PASP..133h4201Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/PASP/133/H4201CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/350 : Gaia EDR3 (Gaia Collaboration, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/PASP/133/H4201https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/PASP/133/H4201http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/PASP/133/H4201https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/PASP/133/H4201https://vizier.iucaa.in/viz-bin/votable?-source=J/PASP/133/H4201http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/PASP/133/H4201GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/PASP/133/H4201/table2 (The Coordinates, magnitude, and distance of our delta Scuti stars (from: Gaia EDR3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/PASP/133/H4201/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/PASP/133/H4201/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/PASP/133/H4201/table2?GETtext/xml+votable180.050000true306.2694906402805450.4494102316533950.0055555555555555566/15489-15491 15496-154971.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/PASP/133/H4201?format=asciidefaultJ/PASP/133/H4201/table2The Coordinates, magnitude, and distance of our delta Scuti stars (from: Gaia EDR3)_RA.icrsRight ascension (ICRS) at Epoch=J2016. (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2016. (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decnullableindexedSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS name (HHMMSSss+DDMMSSs)meta.id;meta.maincharRA_ICRSRight ascension (ICRS) a Ep=2016.0degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) a Ep=2016.0degpos.eq.dec;meta.mainGmagGaia EDR3 G magnitudemagphot.mag;em.opt.VfloatDist? Distancepcpos.distancedoublenullablee_Dist? rms uncertainty on Distpcstat.errorfloatnullableFileNameName of the file with times of maximum in subdirectory tmmeta.id;meta.filechar