Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 401, Issue 1, Pages L39-L43Publisher
WILEY-BLACKWELL PUBLISHING, INC
DOI: 10.1111/j.1745-3933.2009.00782.x
Keywords
galaxies: evolution; galaxies: formation; galaxies: fundamental parameters; galaxies: photometry
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Funding
- Council of Scientific and Industrial Research (CSIR)
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Using archival data from the Hubble Space Telescope, we study the quantitative morphological evolution of spectroscopically confirmed bright galaxies in the core regions of nine clusters ranging in redshift from z = 0.31 to 0.84. We use morphological parameters derived from two-dimensional bulge-disc decomposition to study the evolution. We find an increase in the mean bulge-to-total luminosity ratio as the Universe evolves. We also find a corresponding increase in the fraction of early-type galaxies and in the mean Sersic index. We discuss these results and their implications to physical mechanisms for evolution of galaxy morphology.
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