Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006a%26at...25..455p&link_type=abstract
Astronomical and Astrophysical Transactions, vol. 25, Issue 5, p.455-462
Astronomy and Astrophysics
Astrophysics
1
Scientific paper
In this paper, the results of an analysis of galaxy positions and magnitudes in European Southern Observatory (ESO) field 606 are presented. This 5° × 5° field centred at 23.8 h,-19°.53, contains 29 313 galaxies with magnitudes mF between 12.97 and 20.64. An automatic search of galaxy clusters and groups in the field was made using the Voronoi tessellation technique for two cases: firstly, for all galaxies in the field and, secondly, for galaxies within a magnitude limit of 18.3. We found 37 clusters of galaxies in the field for the first case, and nine clusters for the second case. There are seven Abell-Corwin-Olowin (ACO) clusters in this ESO field. The location of the identified structures on the celestial sphere suggests the existence of a possible galaxy supercluster in the field that covers a region measuring 4°.8 by 2°.4 centred at 23.841 h and-20°.44. The largest clusters from both cases and five of the seven ACO clusters are in the region. The estimated size of the supercluster is 28 h- 1 × 14 h- 1 × 80 h- 1 Mpc for the supercluster 340 h- 1 Mpc distant.
Flin Piotr
Panko Elena
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