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

Abstract

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.