Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Evolution in cluster cores since z ∼ 1
AU - Burke, Claire
AU - Collins, Chris
AU - Stott, John
AU - Hilton, Matt
PY - 2012/8
Y1 - 2012/8
N2 - A large fraction of the stellar mass in galaxy clusters is thought to be contained in the diffuse low surface brightness intracluster light (ICL). Being bound to the gravitational potential of the cluster rather than any individual galaxy, the ICL contains much information about the evolution of its host cluster and the interactions between the galaxies within. However due its low surface brightness it is notoriously difficult to study. We present the first detection and measurement of the flux contained in the ICL at z ∼ 1. We find that the fraction of the total cluster light contained in the ICL may have increased by factors of 2-4 since z ∼ 1, in contrast to recent findings for the lack of mass and scale size evolution found for brightest cluster galaxies. Our results suggest that late time build-up in cluster cores may occur more through stripping than merging and we discuss the implications of our results for hierarchical simulations.
AB - A large fraction of the stellar mass in galaxy clusters is thought to be contained in the diffuse low surface brightness intracluster light (ICL). Being bound to the gravitational potential of the cluster rather than any individual galaxy, the ICL contains much information about the evolution of its host cluster and the interactions between the galaxies within. However due its low surface brightness it is notoriously difficult to study. We present the first detection and measurement of the flux contained in the ICL at z ∼ 1. We find that the fraction of the total cluster light contained in the ICL may have increased by factors of 2-4 since z ∼ 1, in contrast to recent findings for the lack of mass and scale size evolution found for brightest cluster galaxies. Our results suggest that late time build-up in cluster cores may occur more through stripping than merging and we discuss the implications of our results for hierarchical simulations.
KW - cD
KW - galaxies: clusters: general
KW - galaxies: elliptical and lenticular
KW - galaxies: evolution
KW - galaxies: halos
KW - galaxies: interactions
U2 - 10.1017/S1743921313004602
DO - 10.1017/S1743921313004602
M3 - Journal article
AN - SCOPUS:84880409920
VL - 8
SP - 172
EP - 173
JO - Proceedings of the International Astronomical Union
JF - Proceedings of the International Astronomical Union
SN - 1743-9213
IS - S295
ER -