Year: 2003
Type: article
Abstract: We present a first morphometric investigation of a preliminary sample from the SDSS of 154287 galaxies with apparent magnitude $14.5 < m_r < 17.5$ and redshift $0.001 < z < 0.4$. We measure the Minkowski Functionals, which are a complete set of morphological descriptors. To account for the complicated wedge-like geometry of the present survey data, we construct isodensity contour surfaces from the galaxy positions in redshift space and employ two complementary methods of computing the Minkowski Functionals. We find that the observed Minkowski Functionals for SDSS galaxies are consistent with the prediction of a $\Lambda$-dominated spatially-flat Cold Dark Matter model with random-Gaussian initial conditions, within the cosmic variance estimated from the corresponding mock catalogue. We expect that future releases of the SDSS survey will allow us to distinguish morphological differences in the galaxy distribution with regard to different morphological types and luminosity ranges.
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funders: National Science Foundation, U.S. Department of Energy, National Aeronautics and Space Administration, Alfred P. Sloan Foundation, John Templeton Foundation, Princeton University, University of Chicago, University of Washington, Johns Hopkins University, University of Pittsburgh, New Mexico State University, Deutsche Forschungsgemeinschaft, Ministry of Education, Culture, Sports, Science and Technology, Max-Planck-Gesellschaft, University of Tokyo, National Astronomical Observatory of Japan, Max-Planck-Institut für Astronomie, Japan Society for the Promotion of Science, U.S. Naval Observatory, Fermilab, Los Alamos National Laboratory
OpenAlex ID: W2029475199