Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...455l.103b&link_type=abstract
Astrophysical Journal Letters v.455, p.L103
Astronomy and Astrophysics
Astronomy
28
Cosmology: Observations, Cosmology: Large-Scale Structure Of Universe, Galaxies: Distances And Redshifts
Scientific paper
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.
Bellanger Christele
de Lapparent Valerie
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