Abstract
The Void Spectrum and Properties of Void Galaxies in the SDSS
Bulletin of the American Astronomical Society, Vol.36, pp.1496-1496
Dec 2004
Abstract
We measure the distribution of void sizes in the SDSS using an objective void finding algorithm and statistically characterize the spectrum of voids by measuring the Void Probability Function for volume-limited samples of this survey. These void statistics provide powerful constraints on models that describe the relationship between luminous and dark matter. The properties of galaxies in voids provide further contraints on galaxy formation models: On average, galaxies in the rarified environments of voids exhibit bluer colors, higher specific star formation rates, lower dust content, and more disk-like morphology than objects in denser regions. This trend persists in comparisons of samples in low vs. high-density regions with similar luminosity and morphology. Large-scale modulation of the halo mass function partially explains this dependence of galaxy evolution on environment.
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Details
- Title
- The Void Spectrum and Properties of Void Galaxies in the SDSS
- Creators
- Michael S Vogeley - Drexel UniversityFiona Hoyle - Drexel UniversityRandall R. Rojas - Drexel UniversityDavid M Goldberg - Drexel University
- Publication Details
- Bulletin of the American Astronomical Society, Vol.36, pp.1496-1496
- Conference
- 205th Meeting of the American Astronomical Society (San Diego, California, United States, 09 Jan 2005 - 13 Jan 2005)
- Number of pages
- 1
- Resource Type
- Abstract
- Language
- English
- Academic Unit
- Physics
- Identifiers
- 991021906510704721