The broadband optical properties of galaxies with redshifts 0.02 < Z < 0.22

Michael R. Blanton, David W. Hogg, Neta A. Bahcall, Ivan K. Baldry, J. Brinkmann, Istvan Csabai, Daniel Eisenstein, Masataka Fukugita, James E. Gunn, Zeljko Ivezić, D. Q. Lamb, Robert H. Lupton, Jon Loveday, Jeffrey A. Munn, R. C. Nichol, Sadanori Okamura, David J. Schlegel, Kazuhiro Shimasaku, Michael A. Strauss, Michael S. VogeleyDavid H. Weinberg

    Research output: Contribution to journalReview articlepeer-review


    Using photometry and spectroscopy of 183,487 galaxies from the Sloan Digital Sky Survey, we present bivariate distributions of pairs of seven galaxy properties: four optical colors, surface brightness, radial profile shape as measured by the Sérsic index, and absolute magnitude. In addition, we present the dependence of local galaxy density (smoothed on 8 h-1 Mpc scales) on all of these properties. Several classic, well-known relations among galaxy properties are evident at extremely high signal-to-noise ratio: the color-color relations of galaxies, the color-magnitude relations, the magnitude-surface brightness relation, and the dependence of density on color and absolute magnitude. We show that most of the i-band luminosity density in the universe is in the absolute magnitude and surface brightness ranges used: -23.5 < M0.1, < -17.0 mag and 17 < μ0.1 < 24 mag in 1 arcsec2 [the notation zb represents the b band shifted blueward by a factor (1 + z)]. Some of the relationships between parameters, in particular the color-magnitude relations, show stronger correlations for exponential galaxies and concentrated galaxies taken separately than for all galaxies taken together. We provide a simple set of fits of the dependence of galaxy properties on luminosity for these two sets of galaxies and other quantitative details of our results.

    Original languageEnglish (US)
    Pages (from-to)186-207
    Number of pages22
    JournalAstrophysical Journal
    Issue number1 I
    StatePublished - Sep 1 2003


    • Galaxies: fundamental parameters
    • Galaxies: photometry
    • Galaxies: statistics

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

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