Revisiting the colour-magnitude relation of early-type galaxies in the Virgo cluster

GONZALEZ, N. M.; SMITH CASTELLI, A. V.; FAIFER, F. R.; FORTE, J. C.

Ciudad Autonoma de Bs. As.

Workshop; Second Workshop on Numerical and Observational Astrophysics: From the First Structures to the Universe Today; 2011

Institute for Astronomy and Space Physics (IAFE)

In this contribution, we revisit the colour-magnitude relation of the Virgo cluster by performing our own photometry and analysis on the images of 100 early-type galaxies observed as part of the Virgo Cluster Survey of the Advanced Camera for Surveys of the Hubble Space Telescope. We aim at disentangling whether the alleged non-linearity of the relation may be associated with an improper morphological classification of some galaxies of the sample.