## Abstract

We have investigated the statistical clustering properties of galaxies by calculating the two-point galaxy correlation function from the optically selected Durham/ UKST Galaxy Redshift Survey. This survey is magnitude-limited to b_{J} ∼ 17, contains ∼ 2500 galaxies sampled at a rate of one-in-three and surveys a ∼ 4 × 10^{6} (h^{-1} Mpc)^{3} volume of space. We have empirically determined the optimal method of estimating the two-point correlation function from just such a magnitude-limited survey. Applying our methods to this survey, we find that our redshift-space results agree well with those from previous optical surveys. In particular, we confirm the previously claimed detections of large-scale power out to ∼40 h^{-1} Mpc scales. We compare with two common models of cosmological structure formation and find that our two-point correlation function has power significantly in excess of the standard cold dark matter model in the 10-30 h^{-1} Mpc region. We therefore support the observational results of the APM galaxy survey. Given that only the redshift-space clustering can be measured directly, we use standard modelling methods and indirectly estimate the real-space two-point correlation function from the projected two-point correlation function. We then invert this projected correlation function to obtain an estimate of the spatial two-point correlation function in real space. This correlation function in real space has a lower amplitude than that in redshift space, but a steeper slope.

Original language | English |
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Pages (from-to) | 173-190 |

Number of pages | 18 |

Journal | Monthly Notices of the Royal Astronomical Society |

Volume | 296 |

Issue number | 1 |

Publication status | Published - 1 May 1998 |

## Keywords

- Cosmology: observations
- Galaxies: clusters: general
- Galaxies: general
- Large-scale structure of Universe
- Surveys