J/ApJ/743/167ivo://CDS.VizieR/J/ApJ/743/167doi:10.26093/cds/vizier.17430167CDSBradford J.D.Geha M.Munoz R.R.Santana F.A.Simon J.D.Cote P.,Stetson P.B.Kirby E.Djorgovski S.G.2017-11-10T11:16:46Z2013-06-27T10:09:13ZCDS support team

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

cds-question@unistra.frglobular-star-clustersradial-velocityphotometryWe present Keck/DEIMOS spectroscopy and Canada-France-Hawaii Telescope/MegaCam photometry for the Milky Way globular cluster Palomar 13. We triple the number of spectroscopically confirmed members, including many repeat velocity measurements. Palomar 13 is the only known globular cluster with possible evidence for dark matter, based on a Keck/High Resolution Echelle Spectrometer 21 star velocity dispersion of {sigma}=2.2+/-0.4km/s. We reproduce this measurement, but demonstrate that it is inflated by unresolved binary stars. For our sample of 61 stars, the velocity dispersion is {sigma}=0.7^+0.6^_-0.5_km/s. Combining our DEIMOS data with literature values, our final velocity dispersion is {sigma}=0.4^+0.4^_-0.3_km/s. We determine a spectroscopic metallicity of [Fe/H]=-1.6+/-0.1 dex, placing a 1{sigma} upper limit of {sigma}_[Fe/H]_~0.2dex on any internal metallicity spread. We determine Palomar 13's total luminosity to be M_V_=-2.8+/-0.4, making it among the least luminous known globular clusters.2011ApJ...743..167Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/743/167CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/cfht : Log of CFHT Exposures (CADC, 1979-)VII/202 : Globular Clusters in the Milky Way (Harris, 1997)VII/103 : Galactic Globular Clusters (Monella 1985)J/ApJS/191/352 : Abundances in stars of MW dwarf satellites (Kirby+, 2010)J/ApJS/180/54 : GC candidates in ACS Virgo survey. (Jordan+, 2009)J/ApJS/161/304 : Star clusters in the MW & satellites (McLaughlin+, 2005)J/AJ/128/3019 : Pal 13 blue stragglers and MS binaries (Clark+, 2004)J/A+A/419/533 : Pal 13 UBV, proper motions and RVs (Blecha+, 2004)J/AJ/121/935 : UBV and proper motions of Palomar 13 (Siegel+, 2001)J/A+AS/121/499 : BV and rg photometry of Pal 13 (Borissova+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/743/167https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/743/167http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/743/167https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/743/167https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/743/167http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/743/167GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/743/167/table3 (Keck/DEIMOS velocity measurements for Palomar 13)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/743/167/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/743/167/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/743/167/table3?GETtext/xml+votable180.050000true346.679791712.74730560.0055555555555555566/19978 19979 20000 200012.880140407986642e-19 3.4980478996961454e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/743/167?format=asciiOpticaldefaultJ/ApJ/743/167/table3Keck/DEIMOS velocity measurements for Palomar 13SimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[0/299] Index number (1)meta.id;meta.maininto_SeqNumber of different observations of the sourcemeta.numberintNameSource namemeta.idcharRAJ2000[23] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[12] Degree of Declination (J2000)pos.eq.dec;meta.mainrmag[14.6/22.87] CFHT/Megacam r band magnitudemagphot.mag;em.opt.Rfloatg-rCFHT/Megacam (g-r) color indexmagphot.color;em.opt.B;em.opt.Rfloat<HRV>[-508.93/112.59] Average heliocentric radial velocity (2)km/sspect.dopplerVeloc;pos.heliocentric;stat.meanfloate_<HRV>Uncertainty in <HRV>km/sstat.errorfloatHRVD? DEIMOS heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloatnullablee_HRVD? Uncertainty in HRVDkm/sstat.errorfloatnullableHRVH? HIRES heliocentric radial velocity (3)km/sspect.dopplerVeloc;pos.heliocentricfloatnullablee_HRVH? Uncertainty in HRVHkm/sstat.errorfloatnullablefM[NY] "full" member status (Y=Yes; N=No) (4)meta.code.membercharcM[NY] "clean" member status (Y=Yes; N=No) (4)meta.code.membercharS01Cross-match within 1.5" with other Pal 13 catalogs (J/AJ/121/935, J/A+A/419/533 and J/AJ/128/3019)meta.ref.urlintnullable