The Space Density of Galaxies in the Local Universe

Details The Space Density of Galaxies in the Local Universe The Space Density of Galaxies in the Local Universe

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...19512903o&link_type=abstract

American Astronomical Society, 195th AAS Meeting, #129.03; Bulletin of the American Astronomical Society, Vol. 31, p.1559

Astronomy and Astrophysics

Astronomy

Scientific paper

Using the catalog of O'Neil, Bothun, & Schombert (1999), we examine the central surface brightness distribution (φ (μ B(0))) of galaxies in the 22.0 <= μ B(0) <= 25.0 mag arcsec-2 range. Taking advantage of having a catalog in which each galaxy has a known central surface brightness, scale length, and redshift, we apply a bi-variate volume correction to the data and extend the surface brightness distribution function by one magnitude, to 25.0 B mag arcsec-2. The result is a flat (slope = 0) surface brightness distribution function from the Freeman value of 21.65 +/- 0.30 to the survey limit of 25.0 mag arcsec-2, more than 11σ away. This indicates that a significant percentage of the baryonic content of the universe is likely in potentials only dimly lit by the embedded galaxy.

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