期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 380, 期 3, 页码 1036-1040出版社
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2007.12136.x
关键词
galaxies : dwarf; galaxies : luminosity function; mass function
We derive deep luminosity functions (LFs) (to M-z = -15) for galaxies in Abell 1835 (z 0.25) and AC 114 (z = 0.3 1), and compare these with the local z' LF for 69 clusters. The data show that the faint-end upturn, the excess of galaxies above a single Schechter function at M-z < - 17, does not exist in the higher redshift clusters. This suggests that the faint-end upturn galaxies have been created recently, by infall into clusters of star-forming field populations or via tidal disruption of brighter objects.
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