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The Broadband Optical Properties of Galaxies with Redshifts 0.02 < z < 0.22
- Source :
- The Astrophysical Journal. 594:186-207
- Publication Year :
- 2003
- Publisher :
- American Astronomical Society, 2003.
-
Abstract
- 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 Sersic 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 < M-0,M-1i < - 17.0 mag and 17 < mu(0.1i) < 24 mag in 1 arcsec(2) [ the notation (z)b 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.
- Subjects :
- Physics
Absolute magnitude
Brightness
media_common.quotation_subject
Astronomy and Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
Galaxy
Redshift
Photometry (optics)
Space and Planetary Science
Sky
Surface brightness
Spectroscopy
Astrophysics::Galaxy Astrophysics
media_common
Subjects
Details
- ISSN :
- 15384357 and 0004637X
- Volume :
- 594
- Database :
- OpenAIRE
- Journal :
- The Astrophysical Journal
- Accession number :
- edsair.doi.dedup.....8dfcc4d0ada4e7ffb53769791d49e1f6
- Full Text :
- https://doi.org/10.1086/375528