J/MNRAS/426/975ivo://CDS.VizieR/J/MNRAS/426/975doi:10.26093/cds/vizier.74260975CDSForbes D.A.Cortesi A.Pota V.Foster C.Romanowsky A.J.,Merrifield M.R.Brodie J.P.Strader J.Coccato L.Napolitano N.2024-07-19T20:16:56Z2013-08-02T10:30:04ZCDS support team

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

cds-question@unistra.frgalaxiesplanetary-nebulaegalaxy-kinematicsThere are only a few tracers available to probe the kinematics of individual early-type galaxies beyond one effective radius. Here we directly compare a sample of planetary nebulae (PNe), globular clusters (GCs) and galaxy starlight velocities out to approximately four effective radii, in the S0 galaxy NGC 2768. Using a bulge-to-disc decomposition of a K-band image we assign PNe and starlight to either the disc or the bulge. We show that the bulge PNe and bulge starlight follow the same radial density distribution as the red subpopulation of GCs, whereas the disc PNe and disc starlight are distinct components. We find good kinematic agreement between the three tracers to several effective radii (and with stellar data in the inner regions). Further support for the distinct nature of the two galaxy components comes from our kinematic analysis. After separating the tracers into bulge and disc components we find the bulge to be a slowly rotating pressure-supported system, whereas the disc reveals a rapidly rising rotation curve with a declining velocity dispersion profile. The resulting Vrot/{sigma} ratio for the disc resembles that of a spiral galaxy and hints at an origin for NGC 2768 as a transformed late-type galaxy. A two-component kinematic analysis for a sample of S0s will help to elucidate the nature of this class of galaxy.2012MNRAS.426..975Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/426/975CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/635/290 : PNe and stellar kinematics in NGC1344 (Teodorescu+, 2005)J/ApJS/175/522 : Catalog of PNe in NGC 4697 (Mendez+, 2008)J/ApJ/691/228 : Velocities of PNe in NGC 4697 (Mendez+, 2009)J/ApJ/721/369 : PNe in the elliptical galaxy NGC 821 (Teodorescu+, 2010)J/ApJ/736/65 : PNe in Virgo elliptical galaxy NGC 4649 (Teodorescu+, 2011)J/A+A/549/A115 : Planetary Nebula Spectrograph survey (Cortesi+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/426/975https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/426/975http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/426/975https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/426/975https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/426/975http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/426/975GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/426/975/tablea1 (Galaxy kinematic data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/426/975/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/426/975/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/426/975/tablea1?GETtext/xml+votable180.050000true137.8695958360.046683330.0055555555555555566/7384-7385https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/426/975?format=asciiOpticaldefaultJ/MNRAS/426/975/tablea1Galaxy kinematic datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMask[Y1 Y2 Z] Mask identification (1)meta.id;instrcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000declination (J2000)pos.eq.dec;meta.mainr[14/677] Galactocentric radiusarcsecphys.angSize;pos.galactocentricfloatPAPosition angledegpos.posAngintVobsObserved rotation velocitykm/sphys.veloc.rotatinte_Vobsrms uncertainty on Vobskm/sstat.errorintsigmaVelocity dispersion {sigma}km/sphys.veloc.dispersioninte_sigmarms uncertainty on sigmakm/sstat.errorinth3h3 Gauss-Hermite coefficient (3rd-order moment)stat.fit.paramfloate_h3rms uncertainty on h3stat.errorfloath4h4 Gauss-Hermite coefficient (4th-order moment)stat.fit.paramfloate_h4rms uncertainty on h4stat.errorfloat