J/ApJ/748/107ivo://CDS.VizieR/J/ApJ/748/107doi:10.26093/cds/vizier.17480107CDSPejcha O.Kochanek C.S.2017-09-22T16:16:40Z2013-11-18T09:59:12ZCDS support team

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

cds-question@unistra.frastronomical-modelsvariable-starsradial-velocityinterstellar-reddeningstellar-distancemagellanic-cloudsWe perform a global fit to ~5000 radial velocity and ~177000 magnitude measurements in 29 photometric bands covering 0.3{mu}m to 8.0{mu}m distributed among 287 Galactic, Large Magellanic Cloud, and Small Magellanic Cloud Cepheids with P>10 days. We assume that the Cepheid light curves and radial velocities are fully characterized by distance, reddening, and time-dependent radius and temperature variations. We construct phase curves of radius and temperature for periods between 10 and 100 days, which yield light-curve templates for all our photometric bands and can be easily generalized to any additional band. With only four to six parameters per Cepheid, depending on the existence of velocity data and the amount of freedom in the distance, the models have typical rms light and velocity curve residuals of 0.05mag and 3.5km/s. The model derives the mean Cepheid spectral energy distribution and its derivative with respect to temperature, which deviate from a blackbody in agreement with metal-line and molecular opacity effects. We determine a mean reddening law toward the Cepheids in our sample, which is not consistent with standard assumptions in either the optical or near-IR. Based on stellar atmosphere models, we predict the biases in distance, reddening, and temperature determinations due to the metallicity and quantify the metallicity signature expected for our fit residuals.2012ApJ...748..107Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/748/107CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/229 : Radial Velocities of Cepheids (Gorynya+ 1992-98)J/A+A/550/A70 : Galactic & MC Cepheids distance (Groenewegen 2013)J/MNRAS/420/585 : AKARI observations of SMC Cepheids (Ngeow+, 2012)J/AcA/61/285 : VI light curves of Galactic Bulge Cepheids (Soszynski+, 2011)J/A+A/534/A95 : LMC Cepheids radial velocities (Storm+, 2011)J/ApJ/743/76 : Spitzer photometry of LMC Cepheids (Scowcroft+, 2011)J/AcA/60/17 : VI light curves of SMC classical Cepheids (Soszynski+, 2010)J/AcA/60/91 : VI light curves of SMC type II Cepheids (Soszynski+, 2010)J/AcA/58/163 : VI light curves of LMC classical Cepheids (Soszynski+, 2008)J/ApJ/679/71 : Mid-IR period-luminosity relations (Freedman+, 2008)J/A+A/462/599 : JHKs photometry of LMC cluster Cepheids (Testa+, 2007)J/AJ/128/2239 : JHKs photometry of 92 LMC Cepheids (Persson+, 2004)J/A+A/415/531 : Radial velocities of 10 Galactic Cepheids (Storm+, 2004)J/A+A/415/521 : BVRIJK and velocities for MC Cepheids (Storm+, 2004)J/A+A/404/423 : BVI photometry of Galactic Cepheids (Tammann+, 2003)J/A+A/385/793 : Cepheids in Magellanic Clouds. II. (Antonello+, 2002)J/ApJS/142/71 : BVRI observations of LMC Cepheids (Sebo+, 2002)J/A+AS/143/211 : Galactic Cepheids BVRI photometry (Berdnikov+, 2000)J/AcA/49/543 : OGLE LMC + SMC Cepheids VI photometry (Pietrzynski+, 1999)J/AcA/49/223 : BVI photometry of OGLE LMC Cepheids (Udalski+, 1999)J/AcA/49/437 : BVI photometry of OGLE SMC Cepheids (Udalski+, 1999)J/PASP/111/812 : V(RI)C Phot of Cepheids in the MC (Barnes+ 1999)J/ApJS/117/135 : Photometry of Cepheids in Magellanic Clouds (Moffett+ 1998)J/AJ/116/469 : VI photometry of galactic cepheids (Metzger+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/748/107https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/748/107http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/748/107https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/748/107https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/748/107http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/748/107GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/748/107/table5 (Galactic Cepheids)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/748/107/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/748/107/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/748/107/table5?GETtext/xml+votable180.050000true311.499184245.30698890.005555555555555556Cone search capability for table J/ApJ/748/107/table6 (LMC Cepheids)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/748/107/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/748/107/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/748/107/table6?GETtext/xml+votable180.050000true84.8565833-70.34969440.005555555555555556Cone search capability for table J/ApJ/748/107/table7 (SMC Cepheids)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/748/107/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/748/107/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/748/107/table7?GETtext/xml+votable180.050000true2.6004167-75.17702780.0055555555555555565/8263 8269 8274 8275 8280 8329 9482 6/1340 1426 1429 1431 1432 1445 1467 1824 1836 3263 3285 3361 3600 3616 12970 13288 13310 14205 14262 14328 14402 14407 14411 14427 14431 14449 14625 14630 14653 14690 14698 14709 14718 15360 15461 15618 23619 23622 23922 24372 28717 28916 29089 29095 29166 29533 29665 30222 30245 30258 30270 30321 30322 30646 32955 33001 33046 33051 33073 33074 33075 33085 33088 33090 33091 33093 33094 33095 33105 33106 33107 33108 33110 33112 33113 33124 33126 33127 33290 33294 33295 33297 33298 33299 33304 33306 33328 37223 37235 37245 37303 37340 37741 37746 37757 37867 37888 37917 37923 37927 38020 38023 38049 39244 39766 39771 39790 39796 39892 39908 39933 41631 41673 41674 41681 41722 41768 41810 42153 42185 42378 42445 42500 43017 43023https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/748/107?format=asciiOpticaldefaultJ/ApJ/748/107/table4Template coefficientsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlogP[0/1] Log of period divided by 10 days (1)log(10d)time.periodfloatj[1/20] Coefficient number (1)stat.fit.paramintctauj[-0.73/0.22] The c_{tau},j_ coefficient (1)stat.fit.paramdoublestauj[-0.80/0.24] The s_{tau},j_ coefficient (1)stat.fit.paramdoublecrhoj[-0.23/1] The c_{rho},j_ coefficient (1)stat.fit.paramdoublesrhoj[-0.05/0.12] The s_{rho},j_ coefficient (1)stat.fit.paramdoubleJ/ApJ/748/107/table5Galactic CepheidsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCepheid namemeta.id;meta.mainPer[10/100] Perioddtime.periodfloatDM[7.8/19.5] Distance modulusmagphot.mag.distModfloate_DM? Uncertainty in DMmagstat.errorfloatnullableE(B-V)The E(B-V) reddeningmagphot.color.excessfloate_E(B-V)Uncertainty in E(B-V)magstat.errorfloat<RVel>? Mean radial velocitykm/sphys.veloc;pos.heliocentricfloatnullablee_<RVel>? Uncertainty in <RVel>km/sstat.error;spect.dopplerVelocfloatnullable<R>[0.65/1.53] Mean log radius {rho} (1)log(10solRad)phys.size.radius;stat.meanfloate_<R>Uncertainty in <R>log(10solRad)stat.errorfloat<T>[-0.1/0.2] Mean log temperature {tau} (1)log(5400K)phys.temperature.effectivefloate_<T>Uncertainty in <T>log(5400K)stat.errorfloatA2[0.7/7.4] Dimensionless amplitude A^2^ (1)%src.var.amplitudefloate_A2Uncertainty in A2%stat.errorfloatSimbadSimbad column added by the CDSmeta.refchar_RAPositions from SIMBAD name (right ascension part)degpos.eq.ra;meta.main_DEPositions from SIMBAD name (declination part)degpos.eq.dec;meta.mainJ/ApJ/748/107/table6LMC CepheidsSimbadNameSimbad column added by the CDSmeta.idchare_A2Uncertainty in A2%stat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCepheid namemeta.id;meta.maincharPer[10/100] Perioddtime.periodfloatDM[7.8/19.5] Distance modulusmagphot.mag.distModfloate_DM? Uncertainty in DMmagstat.errorfloatnullableE(B-V)The E(B-V) reddeningmagphot.color.excessfloate_E(B-V)Uncertainty in E(B-V)magstat.errorfloat<RVel>? Mean radial velocitykm/sphys.veloc;pos.heliocentricfloatnullablee_<RVel>? Uncertainty in <RVel>km/sstat.error;spect.dopplerVelocfloatnullable<R>[0.65/1.53] Mean log radius {rho} (1)log(10solRad)phys.size.radius;stat.meanfloate_<R>Uncertainty in <R>log(10solRad)stat.errorfloat<T>[-0.1/0.2] Mean log temperature {tau} (1)log(5400K)phys.temperature.effectivefloate_<T>Uncertainty in <T>log(5400K)stat.errorfloatA2[0.7/7.4] Dimensionless amplitude A^2^ (1)%src.var.amplitudefloat_RAPositions from SIMBAD name (right ascension part)degpos.eq.ra;meta.main_DEPositions from SIMBAD name (declination part)degpos.eq.dec;meta.mainJ/ApJ/748/107/table7SMC CepheidsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCepheid namemeta.id;meta.maincharPer[10/100] Perioddtime.periodfloatDM[7.8/19.5] Distance modulusmagphot.mag.distModfloate_DM? Uncertainty in DMmagstat.errorfloatnullableE(B-V)The E(B-V) reddeningmagphot.color.excessfloate_E(B-V)Uncertainty in E(B-V)magstat.errorfloat<RVel>? Mean radial velocitykm/sphys.veloc;pos.heliocentricfloatnullablee_<RVel>? Uncertainty in <RVel>km/sstat.error;spect.dopplerVelocfloatnullable<R>[0.65/1.53] Mean log radius {rho} (1)log(10solRad)phys.size.radius;stat.meanfloate_<R>Uncertainty in <R>log(10solRad)stat.errorfloat<T>[-0.1/0.2] Mean log temperature {tau} (1)log(5400K)phys.temperature.effectivefloate_<T>Uncertainty in <T>log(5400K)stat.errorfloatA2[0.7/7.4] Dimensionless amplitude A^2^ (1)%src.var.amplitudefloate_A2Uncertainty in A2%stat.errorfloatSimbadSimbad column added by the CDSmeta.refchar_RAPositions from SIMBAD name (right ascension part)degpos.eq.ra;meta.main_DEPositions from SIMBAD name (declination part)degpos.eq.dec;meta.main