J/A+A/713/A301ivo://CDS.VizieR/J/A+A/713/A301CDSHaberle M.Bizyaev D.Boecker A.Clontz C.Dias B.Dumont A.,Egorova E.Feldmeier-Krause A.Fernandez-Trincado J.G.Garcia P.,Herbst T.M.Hilder T.Ibarra-Medel H.J.Jones A.M.Klessen R.,Konidaris N.P IIKreckel K.Lugo-Aranda A.Mejia-Narvaez A.,Neumayer N.Rix H.-W.Roman-Lopes A.Sanchez S.Sasi S.Seth A.,Singh A.Smith P.Zermeno R. de J.Wang Z.Blanc G.A.Brownstein J.R.,Drory N.Egorov O.Johnston E.J.Katkov I.Kollmeier J.A.Lambert S.2026-09-24T07:40:33Z2026-09-24T08:39:23ZCDS support team

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

cds-question@unistra.frglobular-star-clustersvisible-astronomyspectroscopyradial-velocityThe Sloan Digital Sky Survey (SDSS)-V Local Volume Mapper (LVM) is a wide-field integral field spectroscopic survey of the Southern Milky Way plane, the Magellanic Clouds, and nearby Local Group galaxies. We use Early Science observations of the whole body of the nearest nuclear cluster, Omega Centauri, to extend the LVM beyond its primary interstellar-medium science case. The wide LVM field allows us to precisely map Omega Cen's line-of-sight rotation out to 3 rHL or 15 arcmin, reaching a maximum value of (8.4+/-0.8)km/s at r=4.7 arcmin. Within the central region, comparisons with existing VLT MUSE oMEGACat data show explicitly that the unresolved-light signal is dominated by a small number of bright stars, with an effective sample size of only around 12 per resolution element. Using Gaia DR3 as an external reference, we verify that the SDSS-V LVM reduction pipeline recovers integrated stellar fluxes to 1-4% across six magnitudes of surface brightness. Our resulting total spectrum of Omega Cen is one of the highest S/N integrated spectrum for any globular or nuclear star cluster. We use it to test four widely-used SSP template libraries against resolved age-metallicity ground truth from oMEGACat. All templates recover an old, metal-poor population. But, even at S/N around 1300, the inferred mean ages and mean [Fe/H] vary by around 7 Gyr and around 0.4dex, respectively, across libraries and wavelength ranges, reflecting a systematic floor for integrated-light studies of old multi-population systems.2026A&A...713A.301Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/713/A301CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/958/8 : VLT MUSE catalog of 300000 stars in Omega Cen (Nitschai+2023)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/713/A301https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/713/A301http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/713/A301https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/713/A301https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/713/A301http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/713/A301GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/713/A301/rotmap (2D line-of-sight velocity map (table B2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/713/A301/rotmap?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/713/A301/rotmap?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/713/A301/rotmap?GETtext/xml+votable180.050000true201.69605149-47.481720890.0055555555555555566/43225 43227https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/713/A301?format=asciiOpticaldefaultJ/A+A/713/A301/rotmap2D line-of-sight velocity map (table B2)RAJ2000Mean right ascension of spatial bin (J2000)degpos.eq.ra;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDEJ2000Mean declination of spatial bin (J2000)degpos.eq.dec;meta.maindxClustercentric coordinate xarcsecpos.cartesian.xfloatdyClustercentric coordinate yarcsecpos.cartesian.y;instr.detfloatVlosMean LOS velocitykm/sphys.veloc;stat.meanfloatVlosCorrPerspective rot. corr. mean LOS velocitykm/sphys.veloc;stat.meanfloate_VlosUncertainty of LOS velocitykm/sstat.errorfloatNNumber of stars or fibers in spatial binmeta.numberfloatInstInstrument (MUSE center, LVM outskirts)meta.id;instrcharJ/A+A/713/A301/rotprof1D rotation profile (table 1)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintrminLower radius limit of binarcsecstat.fit.paramfloatrmedMedian radius within binarcsecstat.fit.paramfloatrmaxUper radius limit of binarcsecspect.binSize;em.binfloatRotAmpLOS rotation velocity amplitudekm/sphys.veloc.rotatfloate_RotAmpUncertainty of velocity amplitudekm/sstat.errorfloatPAPosition angle of rotation axis (theta)degpos.posAngfloate_PAUncertainty of position angledegstat.errorfloatNNumber of measurements in binmeta.numberint