J/A+A/516/A4ivo://CDS.VizieR/J/A+A/516/A4doi:10.26093/cds/vizier.35160004CDSPu S.B.Saglia R.P.Thomas J.Fabricius M.Bender R.Han Z.2017-06-19T07:57:13Z2010-06-17T12:14:26ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopygalaxy-classification-systemsradial-velocitygalaxy-kinematicsWe present high quality long slit spectra along the major and minor axes out to 1.5-2R_e_ (14-22kpc) of three bright elliptical galaxies (NGC1600, NGC4125, NGC7619) obtained at the Hobby-Eberly Telescope (HET). We derive stellar kinematic profiles and Lick/IDS indices (H{beta}, Mgb, Fe_{5015}, Fe_{5270}, Fe_{5335}, Fe_{5406}). Moreover, for NGC4125 we derive gas kinematics and emission line strengths. We model the absorption line strengths using Simple Stellar Populations models that take into account the variation of {alpha}/Fe and derive ages, total metallicity and element abundances. Overall, we find that the three galaxies have old and {alpha}/Fe overabundant stellar populations with no significant gradients. The metallicity is supersolar at the center with a strong negative radial gradient. For NGC4125, several pieces of evidence point to a recent dissipational merger event. We calculate the broad band color profiles with the help of SSP models. All of the colors show sharp peaks at the center of the galaxies, mainly caused by the metallicity gradients, and agree well with the measured colors. Using the Schwarzschild's axisymmetric orbit superposition technique, we model the stellar kinematics to constrain the dark halos of the galaxies. We use the tight correlation between the Mgb strength and local escape velocity to set limits on their extent by testing different halo sizes. Logarithmic halos cut at 60kpc minimize the overall scatter of the Mgb-V_esc_ relation. Larger cutoff radii are found if the dark matter density profile is decreasing more steeply at large radii.2010A&A...516A...4Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/516/A4CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/516/A4https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/516/A4http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/516/A4https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/516/A4https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/516/A4http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/516/A4GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/516/A4/table3Stellar kinematics along major and minor axes of NGC1600, NGC4125, NGC7619recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxy namemeta.id;meta.maincharRDistance from the galaxy center (G1)arcsecpos.angDistancefloatPAPosition angle (G2)degpos.posAngintRVStellar radial velocity, positive receidingkm/sphys.veloc;pos.heliocentricfloate_RVError on stellar radial velocitykm/sstat.errorfloate:RVSystematic error on stellar radial velocity due to the sky subtractionkm/sstat.errorfloatsigmaStellar velocity dispersionkm/sphys.veloc.dispersionfloate_sigmaError on stellar velocity dispersionkm/sstat.errorfloate:sigmaSystematic error on stellar velocity dispersion to the sky subtractionkm/sstat.errorfloatH33rd order Hermite coefficientstat.fit.paramfloate_H3Error on 3rd order Hermite coefficientstat.errorfloate:H3Systematic error on 3rd order Hermite coefficient to the sky subtractionstat.errorfloatH44th order Hermite coefficientstat.fit.paramfloate_H4Error on 4th order Hermite coefficientstat.errorfloate:H4Systematic error on 4th order Hermite coefficient due to the sky subtractionstat.errorfloatJ/A+A/516/A4/table4Gas kinematics and emission equivalent width and ratios along major and minor axes of NGC4125recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxy namemeta.id;meta.maincharRDistance from the centerarcsecpos.angDistancefloatPAPosition angle (G2)degpos.posAngintVgasGas radial velocity, positive receidingkm/sphys.veloc;pos.heliocentricfloate_VgasError on gas radial velocitykm/sstat.errorfloatsig.gasGas velocity dispersionkm/sphys.veloc.dispersionfloate_sig.gasError on gas velocity dispersionkm/sstat.errorfloatHbeEquivalent width of the H{beta} gas emission0.1nmspect.line.eqWidth;em.line.Hbetafloate_HbeError on EW of the H{beta} gas emission0.1nmstat.errorfloatOHRatio [OIII]/H{beta} of the gas emission EWsspect.line.intensity;arith.ratiofloate_OHError on OHstat.errorfloatNHRatio [NI]/H{beta} of the gas emission EWsspect.line.intensity;arith.ratiofloate_NHError on NHstat.errorfloatJ/A+A/516/A4/table6Lick indices along major and minor axes of NGC1600, NGC4125, NGC7619recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxy namemeta.id;meta.maincharRDistance from the center (G1)arcsecpos.angDistancefloatPAPosition angle (G2)degpos.posAngintHbH{beta} line strength0.1nmspect.line.intensity;em.line.Hbetafloate_HbError on the H{beta} line strength0.1nmstat.errorfloate:HbSystematic error on the H{beta} line strength due to the sky subtraction0.1nmstat.errorfloatMgbMgb line strength0.1nmspect.line.strengthfloate_MgbError on the Mgb line strength0.1nmstat.errorfloate:MgbSystematic error on the Mgb line strength due to the sky subtraction0.1nmstat.errorfloatFe1Fe5015 line strength0.1nmspect.line.strengthfloate_Fe1Error on the Fe5015 line strength0.1nmstat.errorfloate:Fe1Systematic error on the Fe5015 line strength due to the sky subtraction0.1nmstat.errorfloatFe2Fe5270 line strength0.1nmspect.line.strengthfloate_Fe2Error on the Fe5270 line strength0.1nmstat.errorfloate:Fe2Systematic error on the Fe5270 line strength due to the sky subtraction0.1nmstat.errorfloatFe3Fe5335 line strength0.1nmspect.line.strengthfloate_Fe3Error on the Fe5335 line strength0.1nmstat.errorfloate:Fe3Systematic error on the Fe5335 line strength due to the sky subtraction0.1nmstat.errorfloatFe4Fe5406 line strength0.1nmspect.line.strengthfloate_Fe4Error on the Fe5406 line strength0.1nmstat.errorfloate:Fe4Systematic error on the Fe5406 line strength due to the sky subtraction0.1nmstat.errorfloat