J/MNRAS/442/533ivo://CDS.VizieR/J/MNRAS/442/533doi:10.26093/cds/vizier.74420533CDSMcIntosh D.H.Wagner C.Cooper A.Bell E.F.Keres D.,van den Bosch F.C.Gallazzi A.Haines T.Mann J.Pasquali A.,Christian A.M.2024-08-09T20:15:36Z2015-06-05T13:44:18ZCDS support team

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

cds-question@unistra.frgalaxiescatalogsgalaxy-classification-systemsWe use the Sloan Digital Sky Survey to investigate the properties of massive elliptical galaxies in the local Universe (z<=0.08) that have unusually blue optical colours. Through careful inspection, we distinguish elliptical from non-elliptical morphologies among a large sample of similarly blue galaxies with high central light concentrations (c_r_>=2.6). These blue ellipticals comprise 3.7 per cent of all c_r>=2.6 galaxies with stellar masses between 10^10^ and 10^11^h^-2^M_{sun}_. Using published fibre spectrum diagnostics, we identify a unique subset of 172 non-star-forming ellipticals with distinctly blue urz colours and young (<3Gyr) light-weighted stellar ages. These recently quenched ellipticals (RQEs) have a number density of 2.7-4.7x10^-5^h^3^/Mpc^3^ and sufficient numbers above 2.5x10^10^h^-2^M_{sun}_ to account for more than half of the expected quiescent growth at late cosmic time assuming that this phase lasts 0.5Gyr. RQEs have properties that are consistent with a recent merger origin (i.e. they are strong 'first-generation' elliptical candidates), yet few involved a starburst strong enough to produce an E+A signature. The preferred environment of RQEs (90 per cent reside at the centres of <3x10^12^h^-1^M_{sun}_ groups) agrees well with the 'small group scale' predicted for maximally efficient spiral merging on to their halo centre and rules out satellite-specific quenching processes. The high incidence of Seyfert and LINER activity in RQEs and their plausible descendants may heat the atmospheres of small host haloes sufficiently to maintain quenching.2014MNRAS.442..533Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/442/533CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/442/533https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/442/533http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/442/533https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/442/533https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/442/533http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/442/533GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/442/533/table3 (Catalog of recently quenched ellipticals (RQEs))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/442/533/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/442/533/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/442/533/table3?GETtext/xml+votable180.050000true7.15144083-9.9311450.0055555555555555566/1 548 4145 4169 4178 4188 4236-4237 4256 4258 4841 5025 5462 5470 5484 5490 5515 5547 5559 5585 5591 5595 5608 5664 5686 5757 5781 5839 5849 5911 5989 5995 6045 6117 6135 6253 6261 6352 6356 6421 6514 6520 6546 7188 7206 7216 7223 7234 7246 7425 7473 7538 8745 9156 9201 9267 9333 9353 9394 9402 9438 9615 9644 9765 9768 9872 9878 9982 9992-9993 10020 10182 10212 10495 10603 10641 10658 10876 10905 10922 10932 10949 10967 10999 11017 11038 11122 11127 11248 11291 11387 11399 11471 11776 11790 11794 11802 11842 11854 11948 11970 12379 17239-17240 17558 17575 17580 17663 17771 18073 18587 18852 19042 19105 19112 19115 19383 19737 19761 19776 19990 21886 23202 25903 25930 25964 25967 25969 26008 26042 26058 26089 26235 26242 26280 26287 26327 26389 26559 26572 26603 27043-27044 27131 27244 27405 27418 27449-27450 27463 27530-27531 27565 27662 27668 27674 27769-27770 27795 27808 27827 27857 27915 31309 31370 31420 32414-32415 32674 45050https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/442/533?format=asciiOpticaldefaultJ/MNRAS/442/533/table3Catalog of recently quenched ellipticals (RQEs)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNYUNYUID galaxy identification number from NYU-VAGC (Blanton et al. 2005AJ....129.2562B)meta.id;meta.mainintRAJ2000Right ascension (J2000) from SDSSdegpos.eq.ra;meta.mainDEJ2000Declination (J2000) from SDSSdegpos.eq.dec;meta.mainzsp[0.01/0.08] SDSS spectroscopic redshift, from the NYU-VAGC (2005AJ....129.2562B)src.redshiftdoublelogM*[10/11.2] Stellar mass estimates (1)log(solMass)phys.massfloatType[pE E] Visual classification type (2)src.morph.typecharETypeOptical emission type (3)src.morph.typechar