J/ApJS/185/1ivo://CDS.VizieR/J/ApJS/185/1doi:10.26093/cds/vizier.21850001CDSTojeiro R.Wilkins S.Heavens A.F.Panter B.Jimenez R.2011-07-09T18:35:21Z2011-06-21T13:57:31ZCDS support team

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

cds-question@unistra.frgalaxiescatalogsastronomical-modelsWe applied the VESPA algorithm to the Sloan Digital Sky Survey (DR7) of the Main Galaxies and Luminous Red Galaxies samples. The result is a catalog of stellar masses, detailed star formation and metallicity histories and dust content of nearly 800000 galaxies. We make the catalog public via a T-SQL database. We present the results using a range of stellar population and dust models, and will continue to update the catalog as new and improved models are made public. We also present a brief exploration of the catalog, and show that the quantities derived are robust: luminous red galaxies can be described by one to three populations, whereas a main galaxy sample galaxy needs on average two to five; red galaxies are older and less dusty; the dust values we recover are well correlated with measured Balmer decrements and star formation rates are also in agreement with previous measurements. We find that whereas some derived quantities are robust to the choice of modelling, many are still not.2009ApJS..185....1Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/185/1CatalogResearchIsServedByTAP VizieR generic servicerelated-toII/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)http://www-wfau.roe.ac.uk/vespa/ : VESPA home pagehttp://www.sdss.org/ : SDSS home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/185/1https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/185/1http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/185/1https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/185/1https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/185/1http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/185/1GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJS/185/1/galaxiesStar formation history for the SDSS galaxiesMJDModified Julian Date of SDSS observationtime.epoch;meta.mainintprimaryindexedplatePlate ID of SDSS spectrummeta.id;instr.plateintprimaryindexedfiberFiber ID of SDSS spectrummeta.id;meta.mainintprimaryindexedrunID[1,8] Gives detail of the run (G3)meta.id;stat.fitintprimaryMassStellar mass (M_*_) (1)solMassphys.massdoublee_MassStatistical error on Mass ({sigma}(M_*_)) (2)solMassstat.error;phys.massdoubletlbLook-back time of galaxy, assuming a WMAP5 cosmologyMyrtime.epochintchi2{chi}^2^ of the unmasked regions used for spectral fitstat.fit.chi2floatS/NSignal-to-noise ratio of the used (unmasked) spectrum, at the models' resolutionstat.snr;instr.setupfloatNb[0,16] Number of recovered bins in galaxy (G2)meta.number;phys.atmol.numberintNp[0,16] Number of recovered bins with non-zero mass (G2)meta.number;phys.massintzRedshiftsrc.redshiftfloatAllParameters in the various models for this galaxymeta.ref.urlcharSloanDisplay the SDSS data for this galaxymeta.ref.urlchar