Bibcode
Ascaso, Begoña; Aguerri, J. L.; Moles, M.
Bibliographical reference
American Astronomical Society, AAS Meeting #213, #448.27; Bulletin of the American Astronomical Society, Vol. 41, p.340
Advertised on:
1
2009
Citations
0
Refereed citations
0
Description
Following the study already presented in our previous work, based on the
Nordic Optical Telescope (NOT) sample, which consists on five clusters
of galaxies within the redshift range 0.15$<$z$<$0.25, imaged
within the central 0.5-2 Mpc in very good seeing conditions, we have
studied the quantitative morphology of their bright galaxy population.
The surface brightness profiles of the galaxies have been decomposed in
the bulge and disc photometrical components. Previously, we have
performed simulations in order to check the reliability of the fits.
These data allow us to derive a quantitative morphological
classification of the galaxies, which has been compared with the
previous visual one.
Galaxies in clusters at this range of redshift do not present
appreciable evolution for the bulges scales. However, their disc scales
are different from those galaxies placed in clusters at low redshift and
more similar to the field galaxies at low redshift. This result suggests
that the evolution of the disc component in galaxy clusters is faster
than in field ones. Fast galaxy-galaxy encounters or interactions with
the global gravitational potential are pointing to be the mechanisms
responsible of this evolution in the last 2.5 Gyr.