The build-up of the colour-magnitude relation in galaxy clusters since z ∼ 0.8

Gabriella De Lucia, Bianca M. Poggianti, Alfonso Aragón-Salamanca, Simon D M White, Dennis F Zaritsky, Douglas Clowe, Claire Halliday, Pascale Jablonka, Anja Von Der Linden, Bo Milvang-Jensen, Roser Pelló, Gregory Rudnick, Roberto P. Saglia, Luc Simard

Research output: Contribution to journalArticle

170 Citations (Scopus)

Abstract

Using galaxy clusters from the ESO Distant Cluster Survey, we study how the distribution of galaxies along the colour-magnitude relation has evolved since z ∼ 0.8. While red-sequence galaxies in all these clusters are well described by an old, passively evolving population, we confirm our previous finding of a significant evolution in their luminosity distribution as a function of redshift. When compared to galaxy clusters in the local Universe, the high-redshift EDisCS clusters exhibit a significant deficit of faint red galaxies. Combining clusters in three different redshift bins, and defining as 'faint' all galaxies in the range 0.4 ≳ L/L≳ 0.1, we find a clear decrease in the luminous-to-faint ratio of red galaxies from z ∼ 0.8 to ∼0.4. The amount of such a decrease appears to be in qualitative agreement with predictions of a model where the blue bright galaxies that populate the colour-magnitude diagram of high-redshift clusters, have their star formation suppressed by the hostile cluster environment. Although model results need to be interpreted with caution, our findings clearly indicate that the red-sequence population of high-redshift clusters does not contain all progenitors of nearby red-sequence cluster galaxies. A significant fraction of these must have moved on to the red sequence below z ∼ 0.8.

Original languageEnglish (US)
Pages (from-to)809-822
Number of pages14
JournalMonthly Notices of the Royal Astronomical Society
Volume374
Issue number3
DOIs
StatePublished - Jan 2007

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galaxies
color
diagram
prediction
distribution
color-magnitude diagram
European Southern Observatory
star formation
universe
luminosity
predictions

Keywords

  • Galaxies: clusters: general
  • Galaxies: evolution
  • Galaxies: fundamental parameters
  • Galaxies: luminosity function, mass function

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

The build-up of the colour-magnitude relation in galaxy clusters since z ∼ 0.8. / De Lucia, Gabriella; Poggianti, Bianca M.; Aragón-Salamanca, Alfonso; White, Simon D M; Zaritsky, Dennis F; Clowe, Douglas; Halliday, Claire; Jablonka, Pascale; Von Der Linden, Anja; Milvang-Jensen, Bo; Pelló, Roser; Rudnick, Gregory; Saglia, Roberto P.; Simard, Luc.

In: Monthly Notices of the Royal Astronomical Society, Vol. 374, No. 3, 01.2007, p. 809-822.

Research output: Contribution to journalArticle

De Lucia, G, Poggianti, BM, Aragón-Salamanca, A, White, SDM, Zaritsky, DF, Clowe, D, Halliday, C, Jablonka, P, Von Der Linden, A, Milvang-Jensen, B, Pelló, R, Rudnick, G, Saglia, RP & Simard, L 2007, 'The build-up of the colour-magnitude relation in galaxy clusters since z ∼ 0.8', Monthly Notices of the Royal Astronomical Society, vol. 374, no. 3, pp. 809-822. https://doi.org/10.1111/j.1365-2966.2006.11199.x
De Lucia, Gabriella ; Poggianti, Bianca M. ; Aragón-Salamanca, Alfonso ; White, Simon D M ; Zaritsky, Dennis F ; Clowe, Douglas ; Halliday, Claire ; Jablonka, Pascale ; Von Der Linden, Anja ; Milvang-Jensen, Bo ; Pelló, Roser ; Rudnick, Gregory ; Saglia, Roberto P. ; Simard, Luc. / The build-up of the colour-magnitude relation in galaxy clusters since z ∼ 0.8. In: Monthly Notices of the Royal Astronomical Society. 2007 ; Vol. 374, No. 3. pp. 809-822.
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