J/ApJS/186/191ivo://CDS.VizieR/J/ApJS/186/191doi:10.26093/cds/vizier.21860191CDSCurrie T.Hernandez J.Irwin J.Kenyon S.J.Tokarz S.Balog Z.,Bragg A.Berlind P.Calkins M.2018-01-11T13:48:55Z2010-05-31T20:31:42ZCDS support team

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

cds-question@unistra.frstellar-associationsinfrared-photometryvisible-astronomyphotometryopen-star-clustersFrom photometric observations of ~47000 stars and spectroscopy of ~11000 stars, we describe the first extensive study of the stellar population of the famous Double Cluster, h and {chi} Persei, down to subsolar masses. By analyzing optical spectra and optical/infrared photometry, we constrain the distance moduli (dM), reddening (E(B-V)), and ages for h Persei, {chi} Persei, and the low-density halo population surrounding both cluster cores. With the exception of mass and spatial distribution, the clusters are nearly identical in every measurable way. From these data, we establish the first spectroscopic and photometric membership lists of cluster stars down to early/mid M dwarfs. At minimum, there are ~5000 members within 10' of the cluster centers, while the entire h and {chi} Persei region has at least ~13000 and as many as 20000 members. The Double Cluster contains ~8400M_{sun}_ of stars within 10' of the cluster centers. We estimate a total mass of at least 20000M_{sun}_. We conclude our study by outlining outstanding questions regarding the past and present properties of h and {chi} Persei. From comparing recent work, we compile a list of intrinsic colors and derive a new effective temperature scale for O-M dwarfs, giants, and supergiants.2010ApJS..186..191Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/186/191CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/122/248 : h and chi Per UBVI,H{alpha} photometry (Keller+, 2001)J/PASP/114/233 : h and {chi} Per memberships (Uribe+, 2002)J/ApJ/576/880 : CCD UBV photometry of h and {chi} Per (Slesnick+, 2002)J/ApJ/659/599 : IRAC and JHKs photometry of h and chi Persei (Currie+, 2007)http://tdc-www.cfa.harvard.edu/instruments/hectospec/progs/HXP/ : Hectospechttp://tdc-www.cfa.harvard.edu/instruments/hectospec/progs/hxp/hydra.html :http://tdc-www.cfa.harvard.edu/instruments/fast/progs/ : FAST, programs 83https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/186/191https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/186/191http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/186/191https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/186/191https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/186/191http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/186/191GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/186/191/table1 (Optical photometry catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/186/191/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/186/191/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/186/191/table1?GETtext/xml+votable180.050000true35.601857.10950.005555555555555556Cone search capability for table J/ApJS/186/191/table2 (Spectroscopy catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/186/191/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/186/191/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/186/191/table2?GETtext/xml+votable180.050000true35.48557.14710.005555555555555556Cone search capability for table J/ApJS/186/191/table3 (Combined catalog for stars with optical photometry and spectroscopy (spectral types and extinction))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/186/191/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/186/191/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/186/191/table3?GETtext/xml+votable180.050000true35.468456.9050.005555555555555556Cone search capability for table J/ApJS/186/191/table6 (Combined list of h and {chi} Persei members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/186/191/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/186/191/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/186/191/table6?GETtext/xml+votable180.050000true34.752157.07420.0055555555555555565/814 6/32518.650015785639275e-20 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/186/191?format=asciiInfraredOpticaldefaultJ/ApJS/186/191/table1Optical photometry catalogf_VmagPhotometry flag on Vmag (1)meta.codeintVexpV band exposure timestime.duration;obs.exposure;em.opt.VintSeq[1/47060] Running index numbermeta.id;meta.mainintprimaryMmMembership code, from table6 (1=Spectroscopic Members; 2=Photometric Members; 3=1+2meta.code.memberintnullableRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainindexedDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainindexedVmagV band magnitudemagphot.mag;em.opt.Vfloate_Vmag1{sigma} error in Vmagmagstat.error;phot.mag;em.opt.VfloatIcTimeI_c_ band exposure timestime.duration;obs.exposureintIcmagCousins I band magnitudemagphot.mag;em.opt.Ifloate_Icmag1{sigma} error in Icmagmagstat.error;phot.mag;em.opt.Ifloatf_IcmagPhotometry flag on Icmag (1)meta.codeintJ/ApJS/186/191/table2Spectroscopy catalogSeq[1/11309] Running index numbermeta.id;meta.mainintprimaryMmMembership code, from table6 (1=Spectroscopic Members; 2=Photometric Members; 3=1+2meta.code.memberintnullables[1/4] Source of spectroscopic data (1)meta.id;instrintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainSpT? Numerical spectral type (G1)src.spTypefloatnullablee_SpT? Uncertainty in SpT; given in subclassesstat.errorfloatnullableJmag2MASS/J band magnitudemagphot.mag;em.IR.Jfloate_Jmag1{sigma} error in Jmagmagstat.error;phot.mag;em.IR.JfloatHmag2MASS/H band magnitudemagphot.mag;em.IR.Hfloate_Hmag1{sigma} error in Hmagmagstat.error;phot.mag;em.IR.HfloatKsmag2MASS Ks band magnitudemagphot.mag;em.IR.Kfloate_Ksmag1{sigma} error in Ksmagmagstat.error;phot.mag;em.IR.KfloatJ/ApJS/186/191/table3Combined catalog for stars with optical photometry and spectroscopy (spectral types and extinction)Seq[1/7465] Running index numbermeta.id;meta.mainintprimaryRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainSpTNumerical spectral type (G1)src.spTypefloate_SpTUncertainty in SpTstat.errorfloatE(B-V)E(B-V) interstellar reddeningmagphot.color.excessfloatLNumerical luminosity class (G1)src.class.luminosityintVmagJohnson V-band magnitudemagphot.mag;em.opt.Vfloate_Vmag1{sigma} error in Vmagmagstat.error;phot.mag;em.opt.VfloatIcmag? Cousins Ic band magnitudemagphot.mag;em.opt.Ifloatnullablee_Icmag? 1{sigma} error in Icmagmagstat.error;phot.mag;em.opt.IfloatnullableJmag2MASS/J band magnitudemagphot.mag;em.IR.Jfloate_Jmag1{sigma} error in Jmagmagstat.error;phot.mag;em.IR.JfloatHmag2MASS/H band magnitudemagphot.mag;em.IR.Hfloate_Hmag1{sigma} error in Hmagmagstat.error;phot.mag;em.IR.HfloatKsmag2MASS/Ks band magnitudemagphot.mag;em.IR.Kfloate_Ksmag1{sigma} error in Ksmagmagstat.error;phot.mag;em.IR.KfloatallShow details for all tables about this source (up to 1.5'')meta.ref.urlcharJ/ApJS/186/191/table6Combined list of h and {chi} Persei membersSimbadNameSimbad column added by the CDSmeta.idcharMmMembership type (2)meta.noteintPerh= h Persei ; x= {chi} Persei; column added by CDS (1)meta.codecharSeq[1/13424] Member identification number (1)meta.id;meta.mainintprimaryPhot? Photometry running index number (Seq from table 1)meta.idintnullableSpec? Spectroscopy running index number (Seq from table 3)meta.idintnullableRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainSpT[10.4/68.3]? Numerical spectral type (G1)src.spTypefloatnullableVmagV band magnitudemagphot.mag;em.opt.Vfloate_Vmag1{sigma} error in Vmagmagstat.error;phot.mag;em.opt.VfloatIcmag? I_c_ band magnitudemagphot.mag;em.opt.Ifloatnullablee_Icmag? 1{sigma} error in Icmagmagstat.error;phot.mag;em.opt.Ifloatnullable