The galaxy luminosity function of the Abell 496 cluster and its spatial variations
نویسندگان
چکیده
منابع مشابه
The galaxy luminosity function of the Abell 496 cluster and its spatial variations ⋆
Context. The faint-end slopes of galaxy luminosity functions (LFs) in clusters of galaxies have been observed in some cases to vary with clustercentric distance and should be influenced by physical processes (mergers, tides) affecting cluster galaxies. However, there is a wide disagreement on the values of the faint-end LF slopes, ranging from −1 to −2.3 in the magnitude range −18 < M r < −14. ...
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Spatial variations of the optical galaxy luminosity functions and red sequences in the Coma cluster : clues to its assembly history ⋆
1 The aim of this paper is to sample the Coma cluster building history, based on the analysis of galaxy luminosity functions (LFs) and red sequences (RSs) in the Color Magnitude Relation (CMR) down to faint magnitudes, which are privileged tools for this purpose. The present analysis is based on deep (R∼24), wide (∼0.5 deg 2) multiband (BVRI Vega system) images of the Coma cluster obtained with...
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Deep photometric observations in three colours of the cluster A 496 show that the luminosity function is bimodal with a deep gap at g ∼ 19.0. That is there is a net separation between E/SO galaxies that are nicely fitted by a gaussian distribution curve and the dwarfs that better match a Shechter function. This is the first cluster observed and reduced out of a sample of 19 clusters which we ha...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2007
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20077723