A complete southern sky redshift survey

L. Nicolaci Da Costa, M. J. Geller, P. S. Pellegrini, D. W. Latham, A. P. Fairall, R. O. Marzke, C. N.A. Willmer, J. P. Huchra, J. H. Calderon, M. Ramella, M. J. Kurtz

Research output: Contribution to journalArticlepeer-review

127 Scopus citations

Abstract

We discuss a magnitude-limited redshift survey covering a region around the south Galactic pole (SSRS2). The survey includes 3592 galaxies and covers a region of 1.13 sr to a limiting mB(0) = 15.5, directly comparable to CfA2. Together, CfA2 and SSR2 cover more than a third of the sky. The northern and southern surveys are remarkably similar. Both contain voids with diameters as large as 5000 km s-1. The southern survey contains the Southern Wall, similar to the northern Great Wall. The distributions of velocity dispersions for systems extracted from the SSRS2 and CfA2 surveys are also remarkably similar. For the SSRS2, an inhomogeneity-independent technique yields Schechter luminosity function parameters M* = -19.50 and α = -1.20 (H0 = 100 h km s-1 Mpc-1; h = 1 unless otherwise specified). The steep faint-end slope is probably attributable to bluer galaxies. By examining the normalized density fluctuations in the SSRS2 and CfA2 surveys, we suggest that the combined sample is not yet large enough to be "fair." There are large fluctuations in shells at 10,000 km s-1.

Original languageEnglish (US)
Pages (from-to)L1-L4
JournalAstrophysical Journal
Volume424
Issue number1 PART 2
DOIs
StatePublished - Mar 20 1994
Externally publishedYes

Keywords

  • Cosmology: observations
  • Galaxies: clustering
  • Galaxies: distances and redshifts
  • Galaxies: luminosity function, mass function
  • Large-scale structure of universe

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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