Mapping the Galaxy Distribution at Large Distances

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Abstract
We present the first results of the ESO-Sculptor Faint Galaxy Redshift Survey designed to study the large-scale galaxy distribution at large distances in the direction of the southern Galactic pole. The galaxy catalog is based on deep multicolor CCD photometry. To date, 353 galaxies with R ≤ 20.5 have a reliable redshift, representing a ~52% complete sample over 0.28 deg2. By its combination of angular coverage and high sampling rate, this survey provides the first detailed maps of the galaxy distribution in the redshift interval 0.1 z 0.5. These maps reveal a large number of sharp walls separated by vast regions devoid of galaxies with diameters 50 h-1 Mpc (using H0 = 100 h km s-1 Mpc-1 and q0 = 0.5). We find no evidence for periodic structure on scales ~130 h-1 Mpc as suggested by Koo et al. (1993). From the ESO-Sculptor Survey, the large-scale structure at z 0.5 appears to be consistent with the results of the nearby surveys (Geller & Huchra 1989). These new data underline the essential role of densely sampled redshift surveys for understanding the large-scale clustering at large distances.

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