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Measurement of the intracluster light at z∼1

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Measurement of the intracluster light at z∼1. / Burke, Claire; Collins, Chris A.; Stott, John P. et al.
In: Monthly Notices of the Royal Astronomical Society, Vol. 425, No. 3, 21.09.2012, p. 2058-2068.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Burke, C, Collins, CA, Stott, JP & Hilton, M 2012, 'Measurement of the intracluster light at z∼1', Monthly Notices of the Royal Astronomical Society, vol. 425, no. 3, pp. 2058-2068. https://doi.org/10.1111/j.1365-2966.2012.21555.x

APA

Burke, C., Collins, C. A., Stott, J. P., & Hilton, M. (2012). Measurement of the intracluster light at z∼1. Monthly Notices of the Royal Astronomical Society, 425(3), 2058-2068. https://doi.org/10.1111/j.1365-2966.2012.21555.x

Vancouver

Burke C, Collins CA, Stott JP, Hilton M. Measurement of the intracluster light at z∼1. Monthly Notices of the Royal Astronomical Society. 2012 Sept 21;425(3):2058-2068. doi: 10.1111/j.1365-2966.2012.21555.x

Author

Burke, Claire ; Collins, Chris A. ; Stott, John P. et al. / Measurement of the intracluster light at z∼1. In: Monthly Notices of the Royal Astronomical Society. 2012 ; Vol. 425, No. 3. pp. 2058-2068.

Bibtex

@article{4fb26918c8b043ecae910e10ee8acb07,
title = "Measurement of the intracluster light at z∼1",
abstract = "A significant fraction of the total photospheric light in nearby galaxy clusters is thought to be contained within the diffuse intracluster light (ICL), which extends hundreds of kpc from cluster cores. The study of the ICL can reveal details of the evolutionary histories and processes occurring within galaxy clusters; however, since it has a very low surface brightness, it is often difficult to detect. We present here the first measurements of the ICL as a fraction of the total cluster light at z ∼ 1 using deep J-band (1.2 μm) imaging from a high-acuity wide-field K-band imager on the Very Large Telescope. We investigate the ICL in six X-ray selected galaxy clusters at 0.8 ≤ z ≤ 1.2 and find that the ICL below isophotes μ J = 22 magarcsec -2 constitutes 1-4 per cent of the total cluster light within a radius R 500. This is broadly consistent with simulations of the ICL at a similar redshift and when compared to nearby observations suggests that the fraction of the total cluster light that is in the ICL has increased by a factor of 2-4 since z ∼ 1. We also find the fraction of the total cluster light contained within the brightest cluster galaxy (BCG) to be 2.0-6.3 per cent at these redshifts, which in five out of six cases is larger than the fraction of the ICL component, in contrast to the results from nearby clusters. This suggests that the evolution in cluster cores involves substantial stripping activity at late times, in addition to the early build-up of the BCG stellar mass through merging. The presence of significant amount of stellar light at large radii from these BCGs may help towards solving the recent disagreement between the semi-analytic model predictions of BCG mass growth and the observed large masses and scale sizes reported for BCGs at high redshift.",
keywords = "Clusters, Elliptical and lenticular, cD, Evolution, Galaxies, General, Interactions, Intracluster medium",
author = "Claire Burke and Collins, {Chris A.} and Stott, {John P.} and Matt Hilton",
year = "2012",
month = sep,
day = "21",
doi = "10.1111/j.1365-2966.2012.21555.x",
language = "English",
volume = "425",
pages = "2058--2068",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "OXFORD UNIV PRESS",
number = "3",

}

RIS

TY - JOUR

T1 - Measurement of the intracluster light at z∼1

AU - Burke, Claire

AU - Collins, Chris A.

AU - Stott, John P.

AU - Hilton, Matt

PY - 2012/9/21

Y1 - 2012/9/21

N2 - A significant fraction of the total photospheric light in nearby galaxy clusters is thought to be contained within the diffuse intracluster light (ICL), which extends hundreds of kpc from cluster cores. The study of the ICL can reveal details of the evolutionary histories and processes occurring within galaxy clusters; however, since it has a very low surface brightness, it is often difficult to detect. We present here the first measurements of the ICL as a fraction of the total cluster light at z ∼ 1 using deep J-band (1.2 μm) imaging from a high-acuity wide-field K-band imager on the Very Large Telescope. We investigate the ICL in six X-ray selected galaxy clusters at 0.8 ≤ z ≤ 1.2 and find that the ICL below isophotes μ J = 22 magarcsec -2 constitutes 1-4 per cent of the total cluster light within a radius R 500. This is broadly consistent with simulations of the ICL at a similar redshift and when compared to nearby observations suggests that the fraction of the total cluster light that is in the ICL has increased by a factor of 2-4 since z ∼ 1. We also find the fraction of the total cluster light contained within the brightest cluster galaxy (BCG) to be 2.0-6.3 per cent at these redshifts, which in five out of six cases is larger than the fraction of the ICL component, in contrast to the results from nearby clusters. This suggests that the evolution in cluster cores involves substantial stripping activity at late times, in addition to the early build-up of the BCG stellar mass through merging. The presence of significant amount of stellar light at large radii from these BCGs may help towards solving the recent disagreement between the semi-analytic model predictions of BCG mass growth and the observed large masses and scale sizes reported for BCGs at high redshift.

AB - A significant fraction of the total photospheric light in nearby galaxy clusters is thought to be contained within the diffuse intracluster light (ICL), which extends hundreds of kpc from cluster cores. The study of the ICL can reveal details of the evolutionary histories and processes occurring within galaxy clusters; however, since it has a very low surface brightness, it is often difficult to detect. We present here the first measurements of the ICL as a fraction of the total cluster light at z ∼ 1 using deep J-band (1.2 μm) imaging from a high-acuity wide-field K-band imager on the Very Large Telescope. We investigate the ICL in six X-ray selected galaxy clusters at 0.8 ≤ z ≤ 1.2 and find that the ICL below isophotes μ J = 22 magarcsec -2 constitutes 1-4 per cent of the total cluster light within a radius R 500. This is broadly consistent with simulations of the ICL at a similar redshift and when compared to nearby observations suggests that the fraction of the total cluster light that is in the ICL has increased by a factor of 2-4 since z ∼ 1. We also find the fraction of the total cluster light contained within the brightest cluster galaxy (BCG) to be 2.0-6.3 per cent at these redshifts, which in five out of six cases is larger than the fraction of the ICL component, in contrast to the results from nearby clusters. This suggests that the evolution in cluster cores involves substantial stripping activity at late times, in addition to the early build-up of the BCG stellar mass through merging. The presence of significant amount of stellar light at large radii from these BCGs may help towards solving the recent disagreement between the semi-analytic model predictions of BCG mass growth and the observed large masses and scale sizes reported for BCGs at high redshift.

KW - Clusters

KW - Elliptical and lenticular, cD

KW - Evolution

KW - Galaxies

KW - General

KW - Interactions

KW - Intracluster medium

U2 - 10.1111/j.1365-2966.2012.21555.x

DO - 10.1111/j.1365-2966.2012.21555.x

M3 - Journal article

AN - SCOPUS:84865588797

VL - 425

SP - 2058

EP - 2068

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 3

ER -