J/MNRAS/491/4752ivo://CDS.VizieR/J/MNRAS/491/4752doi:10.26093/cds/vizier.74914752CDSBellinger E.P.Kanbur S.M.Bhardwaj A.Marconi M.2024-08-20T20:14:56Z2023-04-28T12:46:06ZCDS support team

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

cds-question@unistra.frvariable-starsmagellanic-cloudsastronomical-modelsstellar-massesstellar-radiieffective-temperaturevisible-astronomyThe period of pulsation and the structure of the light curve for Cepheid and RR Lyrae variables depend on the fundamental parameters of the star: mass, radius, luminosity, and effective temperature. Here, we train artificial neural networks on theoretical pulsation models to predict the fundamental parameters of these stars based on their period and light-curve structure. We find significant improvements to estimates of these parameters made using light-curve structure and period over estimates made using only the period. Given that the models are able to reproduce most observables, we find that the fundamental parameters of these stars can be estimated up to 60 per cent more accurately when light-curve structure is taken into consideration. We quantify which aspects of light-curve structure are most important in determining fundamental parameters, and find, for example, that the second Fourier amplitude component of RR Lyrae light curves is even more important than period in determining the effective temperature of the star. We apply this analysis to observations of hundreds Cepheids in the Large Magellanic Cloud and thousands of RR Lyrae in the Magellanic Clouds and Galactic bulge to produce catalogues of estimated masses, radii, luminosities, and other parameters of these stars. As an example application, we estimate Wesenheit indices and use those to derive distance moduli to the Magellanic Clouds of {mu}_LMC,CEP_=18.688+/-0.093, {mu}_LMC,RRL_=18.52+/-0.14, and {mu}_SMC,RRL_=18.88+/-0.17mag.2020MNRAS.491.4752Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/491/4752CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/491/4752https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/491/4752http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/491/4752https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/491/4752https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/491/4752http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/491/4752GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/491/4752/table3 (Masses, radii, luminosities, effective temperatures, I- and V-band magnitudes, colour, and Wesenheit indices estimated using machine learning for Cepheids in the LMC)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/491/4752/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/491/4752/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/491/4752/table3?GETtext/xml+votable180.050000true70.4913497-69.43357750.005555555555555556Cone search capability for table J/MNRAS/491/4752/table4 (Masses, radii, luminosities, effective temperatures, I- and V-band magnitudes, colour, and Wesenheit indices estimated using machine learning for RR Lyrae in the LMC)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/491/4752/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/491/4752/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/491/4752/table4?GETtext/xml+votable180.050000true67.240675-70.28797830.005555555555555556Cone search capability for table J/MNRAS/491/4752/table5 (Masses, radii, luminosities, effective temperatures, I- and V-band magnitudes, colour, and Wesenheit indices estimated using machine learning for RR Lyrae in the SMC)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/491/4752/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/491/4752/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/491/4752/table5?GETtext/xml+votable180.050000true4.9780481-74.70117470.005555555555555556Cone search capability for table J/MNRAS/491/4752/table6 (Masses, radii, luminosities, effective temperatures, I- and V-band magnitudes, colour, and Wesenheit indices estimated using machine learning for RR Lyrae in the Galactic bulge)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/491/4752/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/491/4752/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/491/4752/table6?GETtext/xml+votable180.050000true258.4322231-29.82152080.0055555555555555564/1795 2067-2069 2082 5/7178-7179 7192 7194-7195 7205 7210-7211 7214 7216-7217 7220 7227 7313 8238 8261-8263 8265 8267 8280-8282 8284 8321-8324 8326-8327 8332 8334 8352 8448 9354 9376 9378 6/28687 28703 28709-28711 28747 28772 28774-28775 28792 28794-28795 28800-28801 28804-28805 28816-28817 28819 28828-28829 28835 28838-28839 28850-28851 28854-28855 28860 28872-28873 28876-28877 28884 28886 28888-28889 28905-28907 28922-28923 28966 28973 29184-29185 29248-29249 29251 29260-29261 29264-29266 32877 32889 32941-32943 32945-32946 32949 32977 32983 32992 32996 33001 33037 33039 33041 33043 33057-33059 33064-33065 33067 33132-33133 33140 33152 33173 33216 33281 33283 33300 33302 33332 33334 33340 33352 33412-33414 33416-33417 33422 33424-33425 33800 37410-37411 37536 37538-37539 37544 37546 38912 38914 42365 42367 42837 45332https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/491/4752?format=asciiOpticaldefaultJ/MNRAS/491/4752/table3Masses, radii, luminosities, effective temperatures, I- and V-band magnitudes, colour, and Wesenheit indices estimated using machine learning for Cepheids in the LMCrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSimbadSimbad column added by the CDSmeta.ref.urlcharNameStar name (OGLE-LMC-CEP-NNNN)meta.id;meta.maincharMassStar masssolMassphys.massfloate_MassError on MasssolMassstat.error;phys.massfloatlogRLogaritm of star radiuslog(solRad)phys.size.radiusfloate_logRError on logRlog(solRad)stat.errorfloatlogLLogarithm of star luminositylog(solLum)phys.luminosityfloate_logLError on logLlog(solLum)stat.errorfloatTeffEffective temperatureKphys.temperature.effectiveinte_TeffError on TeffKstat.error;phys.temperature.effectiveintIMAGAbsolute I-band magnitudemagphot.magfloate_IMAGError on IMAGmagstat.errorfloatVMAGAbsolute V-band magnitudemagphot.magfloate_VMAGError on VMAGmagstat.errorfloatV-IV-I colour indexmagphot.color;em.opt.V;em.opt.Ifloate_V-IError on V-Imagstat.error;phot.color;em.opt.VfloatWWesenheit index (W=I-1.55(V-I))magphot.color.reddFreefloate_WError on Wmagstat.error;pos.cartesian.zfloat_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/491/4752/table4Masses, radii, luminosities, effective temperatures, I- and V-band magnitudes, colour, and Wesenheit indices estimated using machine learning for RR Lyrae in the LMCe_logRError on logRlog(solRad)stat.errorfloatlogLLogarithm of star luminositylog(solLum)phys.luminosityfloate_logLError on logLlog(solLum)stat.errorfloatTeffEffective temperatureKphys.temperature.effectiveinte_TeffError on TeffKstat.error;phys.temperature.effectiveintIMAGAbsolute I-band magnitudemagphot.magfloate_IMAGError on IMAGmagstat.errorfloatVMAGAbsolute V-band magnitudemagphot.magfloate_VMAGError on VMAGmagstat.errorfloatV-IV-I colour indexmagphot.color;em.opt.V;em.opt.Ifloate_V-IError on V-Imagstat.error;phot.color;em.opt.VfloatWWesenheit index (W=I-1.55(V-I))magphot.color.reddFreefloate_WError on Wmagstat.error;pos.cartesian.zfloat_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.mainSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar name (OGLE-LMC-RRLYR-NNNNN)meta.id;meta.maincharMassStar masssolMassphys.massfloate_MassError on MasssolMassstat.error;phys.massfloatlogRLogaritm of star radiuslog(solRad)phys.size.radiusfloatJ/MNRAS/491/4752/table5Masses, radii, luminosities, effective temperatures, I- and V-band magnitudes, colour, and Wesenheit indices estimated using machine learning for RR Lyrae in the SMCrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar name (OGLE-SMC-RRLYR-NNNN)meta.id;meta.maincharMassStar masssolMassphys.massfloate_MassError on MasssolMassstat.error;phys.massfloatlogRLogaritm of star radiuslog(solRad)phys.size.radiusfloate_logRError on logRlog(solRad)stat.errorfloatVMAGAbsolute V-band magnitudemagphot.magfloate_VMAGError on VMAGmagstat.errorfloatV-IV-I colour indexmagphot.color;em.opt.V;em.opt.Ifloate_V-IError on V-Imagstat.error;phot.color;em.opt.VfloatWWesenheit index (W=I-1.55(V-I))magphot.color.reddFreefloate_WError on Wmagstat.error;pos.cartesian.zfloat_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.mainSimbadSimbad column added by the CDSmeta.ref.urlcharlogLLogarithm of star luminositylog(solLum)phys.luminosityfloate_logLError on logLlog(solLum)stat.errorfloatTeffEffective temperatureKphys.temperature.effectiveinte_TeffError on TeffKstat.error;phys.temperature.effectiveintIMAGAbsolute I-band magnitudemagphot.magfloate_IMAGError on IMAGmagstat.errorfloatJ/MNRAS/491/4752/table6Masses, radii, luminosities, effective temperatures, I- and V-band magnitudes, colour, and Wesenheit indices estimated using machine learning for RR Lyrae in the Galactic bulgee_WError on Wmagstat.error;pos.cartesian.zfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar name (OGLE-BLG-RRLYR-NNNNN)meta.id;meta.maincharMassStar masssolMassphys.massfloate_MassError on MasssolMassstat.error;phys.massfloatlogRLogaritm of star radiuslog(solRad)phys.size.radiusfloate_logRError on logRlog(solRad)stat.errorfloatlogLLogarithm of star luminositylog(solLum)phys.luminosityfloate_logLError on logLlog(solLum)stat.errorfloatTeffEffective temperatureKphys.temperature.effectiveinte_TeffError on TeffKstat.error;phys.temperature.effectiveintIMAGAbsolute I-band magnitudemagphot.magfloate_IMAGError on IMAGmagstat.errorfloatVMAGAbsolute V-band magnitudemagphot.magfloate_VMAGError on VMAGmagstat.errorfloatV-IV-I colour indexmagphot.color;em.opt.V;em.opt.Ifloate_V-IError on V-Imagstat.error;phot.color;em.opt.VfloatWWesenheit index (W=I-1.55(V-I))magphot.color.reddFreefloat_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.mainSimbadSimbad column added by the CDSmeta.ref.urlchar