J/MNRAS/448/3484ivo://CDS.VizieR/J/MNRAS/448/3484doi:10.26093/cds/vizier.74483484CDSMcDermid R.M.Alatalo K.Blitz L.Bournaud F.Bureau M.Cappellari M.,Crocker A.F.Davies R.L.Davis T.A.De Zeeuw P.T.Duc P.-A.,Emsellem E.Khochfar S.Krajnovic D.Kuntschner H.Morganti R.,Naab T.Oosterloo T.Sarzi M.Scott N.Serra P.Weijmans A.-M.,Young L.M.2024-08-14T20:20:29Z2015-12-18T15:38:40ZCDS support team

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

cds-question@unistra.frgalaxiescatalogschemical-abundancesWe present the stellar population content of early-type galaxies from the ATLAS3D survey. Using spectra integrated within apertures covering up to one effective radius, we apply two methods: one based on measuring line-strength indices and applying single stellar population (SSP) models to derive SSP-equivalent values of stellar age, metallicity, and alpha enhancement; and one based on spectral fitting to derive non-parametric star formation histories, mass-weighted average values of age, metallicity, and half-mass formation time-scales. Using homogeneously derived effective radii and dynamically determined galaxy masses, we present the distribution of stellar population parameters on the Mass Plane (M_JAM_, {sigma}_e_, R^maj^_e_), showing that at fixed mass, compact early-type galaxies are on average older, more metal-rich, and more alpha-enhanced than their larger counterparts. From non-parametric star formation histories, we find that the duration of star formation is systematically more extended in lower mass objects. Assuming that our sample represents most of the stellar content of today's local Universe, approximately 50 percent of all stars formed within the first 2Gyr following the big bang. Most of these stars reside today in the most massive galaxies (>10^10.5^M_{sun}_), which themselves formed 90 percent of their stars by z~2. The lower mass objects, in contrast, have formed barely half their stars in this time interval. Stellar population properties are independent of environment over two orders of magnitude in local density, varying only with galaxy mass. In the highest density regions of our volume (dominated by the Virgo cluster), galaxies are older, alpha-enhanced, and have shorter star formation histories with respect to lower density regions.2015MNRAS.448.3484Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/448/3484CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/413/813 : ATLAS3D project. I (Cappellari+, 2011)J/MNRAS/414/888 : ATLAS3D project. III (Emsellem+, 2011)J/MNRAS/414/940 : ATLAS3D project. IV (Young+, 2011)J/MNRAS/416/1680 : ATLAS3D project. VII (Cappellari+, 2011)J/MNRAS/433/2812 : ATLAS3D project. XXIII (Krajnovic+, 2013)J/MNRAS/446/120 : ATLAS3D project. XXIX (Duc+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/448/3484https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/448/3484http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/448/3484https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/448/3484https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/448/3484http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/448/3484GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/448/3484/table4 (Mass-weighted stellar population properties measured within Re)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/448/3484/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/448/3484/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/448/3484/table4?GETtext/xml+votable180.050000true146.4722333-0.26912220.0055555555555555565/4581 6941 6/664 697 2145 2374 4439 4447 4565 4807 4829 4840 4869 4930 4989 5021 5075 5125 5134 5182 5196 5198 5288 5398 5429 5474 5599 5608 5745 5773 5975 5999 6012 6082 6087 6089-6090 6093 6097 6099 6103 6162 7214 7287 7355 7374 7385 7424 7442 7460 7560 8193 8195-8197 8208 8228 8533 9186 10454 10501 10523 10551 10616 10637 10714 10720 10739 10845 10924 10980 11026 11246 11253 11418 11435 11443 11457 11776 11791 11800 11824 13336 13401 15056 15204 17744 17761 18002 18209 18269 18755 18766 19442 20014 20070 20101 22740 22914 23177-23178 25571 25893 25907 25979 26055 26065 26125 26149 26157 26166 26173 26210 26285 26307 26313 26316 26361-26362 26530 26542 27079 27135 27186 27199 27255 27367 27480 27515 27518 27578 27582 27595 27604 27669 27671 27712-27714 27718-27720 27722-27723 27728 27734-27736 27738-27739 27743 27755 27758 27773-27774 27802 27857 27861 27905 27907-27908 27913-27915 27921 27931 27936 27938 27944 27946 28033 28037-28038 28045 28142 28200 28221 28264 28300 28311 28362 28491 28495 28524 28538 28601 28653 31340 31404 31418 31453-31454 31499 31624 32168-32169 32482 32539 36819 36831 40952https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/448/3484?format=asciidefaultJ/MNRAS/448/3484/table4Mass-weighted stellar population properties measured within RerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharAgeMass-weighted ageGyrtime.agefloate_Agerms uncertainty on AgeGyrstat.error;time.agefloat[Z/H]Mass-weighted metallicityphys.abund.Zfloate_[Z/H]rms uncertainty on [Z/H]stat.error;src.redshiftfloatt50Half-mass formation timeGyrphys.SFRfloate_t50rms uncertainty on t50Gyrstat.errorfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/MNRAS/448/3484/table1Measured Lick index measurements and SSP parameters measured within Re/8recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharHbetaHbeta Lick index measurements within Re/8, Re/2 or Re (1)0.1nmspect.index;em.line.Hbetafloate_Hbetarms uncertainty on Hbeta0.1nmstat.errorfloatFe5015Fe5015 Lick index measurements within Re/8, Re/2 or Re (1)0.1nmmeta.code;spect.indexfloate_Fe5015rms uncertainty on Fe50150.1nmstat.errorfloatMgbMgb Lick index measurements within Re/8, Re/2 or Re (1)0.1nmmeta.code;spect.indexfloate_Mgbrms uncertainty on Mgb0.1nmstat.errorfloatFe5270? Fe5270 Lick index measurements within Re/8, Re/2 or Re (1)0.1nmmeta.code;spect.indexfloatnullablee_Fe5270? rms uncertainty on Fe52700.1nmstat.errorfloatnullableAge? Estimates of SSP-equivalent age (2)Gyrtime.agefloatnullablee_Age? rms uncertainty on AgeGyrstat.error;time.agefloatnullable[Z/H]? Estimates of SSP-equivalent metallicity (2)phys.abund.Zfloatnullablee_[Z/H]? rms uncertainty on [Z/H]stat.error;src.redshiftfloatnullable[a/Fe]? Estimates of SSP-equivalent abundance ratio (2)phys.abundfloatnullablee_[a/Fe]? rms uncertainty on [a/Fe]stat.error;phys.abundfloatnullableQual[1/4] Quality flag (3)meta.code.qualintJ/MNRAS/448/3484/table2Measured Lick index measurements and SSP parameters measured within Re/2recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharHbetaHbeta Lick index measurements within Re/8, Re/2 or Re (1)0.1nmspect.index;em.line.Hbetafloate_Hbetarms uncertainty on Hbeta0.1nmstat.errorfloatFe5015Fe5015 Lick index measurements within Re/8, Re/2 or Re (1)0.1nmmeta.code;spect.indexfloate_Fe5015rms uncertainty on Fe50150.1nmstat.errorfloatMgbMgb Lick index measurements within Re/8, Re/2 or Re (1)0.1nmmeta.code;spect.indexfloate_Mgbrms uncertainty on Mgb0.1nmstat.errorfloatFe5270? Fe5270 Lick index measurements within Re/8, Re/2 or Re (1)0.1nmmeta.code;spect.indexfloatnullablee_Fe5270? rms uncertainty on Fe52700.1nmstat.errorfloatnullableAge? Estimates of SSP-equivalent age (2)Gyrtime.agefloatnullablee_Age? rms uncertainty on AgeGyrstat.error;time.agefloatnullable[Z/H]? Estimates of SSP-equivalent metallicity (2)phys.abund.Zfloatnullablee_[Z/H]? rms uncertainty on [Z/H]stat.error;src.redshiftfloatnullable[a/Fe]? Estimates of SSP-equivalent abundance ratio (2)phys.abundfloatnullablee_[a/Fe]? rms uncertainty on [a/Fe]stat.error;phys.abundfloatnullableQual[1/4] Quality flag (3)meta.code.qualintJ/MNRAS/448/3484/table3Measured Lick index measurements and SSP parameters measured within RerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharHbetaHbeta Lick index measurements within Re/8, Re/2 or Re (1)0.1nmspect.index;em.line.Hbetafloate_Hbetarms uncertainty on Hbeta0.1nmstat.errorfloatFe5015Fe5015 Lick index measurements within Re/8, Re/2 or Re (1)0.1nmmeta.code;spect.indexfloate_Fe5015rms uncertainty on Fe50150.1nmstat.errorfloatMgbMgb Lick index measurements within Re/8, Re/2 or Re (1)0.1nmmeta.code;spect.indexfloate_Mgbrms uncertainty on Mgb0.1nmstat.errorfloatFe5270? Fe5270 Lick index measurements within Re/8, Re/2 or Re (1)0.1nmmeta.code;spect.indexfloatnullablee_Fe5270? rms uncertainty on Fe52700.1nmstat.errorfloatnullableAge? Estimates of SSP-equivalent age (2)Gyrtime.agefloatnullablee_Age? rms uncertainty on AgeGyrstat.error;time.agefloatnullable[Z/H]? Estimates of SSP-equivalent metallicity (2)phys.abund.Zfloatnullablee_[Z/H]? rms uncertainty on [Z/H]stat.error;src.redshiftfloatnullable[a/Fe]? Estimates of SSP-equivalent abundance ratio (2)phys.abundfloatnullablee_[a/Fe]? rms uncertainty on [a/Fe]stat.error;phys.abundfloatnullableQual[1/4] Quality flag (3)meta.code.qualint