Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007chjaa...7..620x&link_type=abstract
Chinese Journal of Astronomy and Astrophysics, Volume 7, Issue 5, pp. 620-628 (2007).
Astronomy and Astrophysics
Astrophysics
Scientific paper
We investigate the Luminosity Function (LF) of the cluster of galaxies Abell 566. The photometric data of 15 intermediate-bands are obtained from the Beijing-Arizona-Taiwan-Connecticut (BATC) photometric sky survey. For each of the 15 wavebands, the LF of cluster galaxies is well modelled by the Schechter function, with characteristic luminosities from 18.0 to 21.9 magnitude, from the a- to the p-band. Morphological dependence of the LF is investigated by separating the cluster members into `red' and `blue' subsamples. It is clear that late type galaxies have a steeper shape of LF than the early type galaxies. We also divided the sample galaxies by their local environment. It was found that galaxies in the sparser region have steeper shape of LF than galaxies in the denser region. Combining the results of morphological and environmental dependence of LFs, we show that Abell 566 is a well relaxed cluster with positive evidence of galaxy interaction and merger, and excess number of bright early type galaxies located in its denser region.
Shao Zheng-Yi
Xiao Quan-Bao
Zhou Xu
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