We measure the two-dimensional galaxy-galaxy correlation function from the Muenster Red Sky Survey. This survey covers a slightly larger sky area compared with the APM survey and is complete to rF<18.3mag (zmed~0.14). The large dynamic range of the survey makes it possible to examine sub-catalogues with different limiting magnitudes. The positive parts of our measured angular correlation functions (after the colour correction) show excellent agreement with those measured by Maddox, Efstathiou & Sutherland from the APM galaxy catalogue. From the measured angular correlation functions, the three-dimensional two-point correlation function ξ(r) is calculated. We have chosen the evolution parameter ∊ so that the change of the correlation length r0 with the depth of the sub-catalogue is minimal. This prescription gives r0=5.82+/-0.05h-1Mpc and a very high, positive evolution parameter ∊=2.6. The position of the point where the three-dimensional correlation function breaks away from the power law depends on the depth of the sub-catalogues: the break comes earlier for lower magnitude limits, and later for higher magnitude limits.
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- August 2002
- galaxies: clusters: general;
- large-scale structure of Universe;
- Submitted to MNRAS, 30 pages, 14 figures