The evolution of the red sequence slope in massive galaxy clusters

J Stott, Kevin Pimbblet, Alastair Edge, G Smith, J Wardlow

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41 Citations (Scopus)

Abstract

We investigate the evolution of the optical and near-infrared colour-magnitude relation in an homogeneous sample of massive clusters from z = 1 to the present epoch. By comparing deep Hubble Space Telescope Advanced Camera for Surveys imaging of X-ray selected MAssive Cluster Survey (MACS) clusters at z 0.5 to the similarly selected Las Campanas/AAT Rich Cluster Survey (LARCS) sample at z 0.1, we find that the rest-frame I (U - V)/I V slope of the colour-magnitude relation evolves with redshift which we attribute to the build up of the red sequence over time. This rest-frame slope evolution is not adequately reproduced by that predicted from semi-analytic models based on the Millennium Simulation despite a prescription for the build up of the red sequence by in-falling galaxies, strangulation .
Original languageEnglish
Pages (from-to)2098 - 2108
Number of pages11
JournalMonthly Notices of the Royal Astronomical Society
Volume394
Issue number4
DOIs
Publication statusPublished - 2009
Externally publishedYes

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