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Title: Galaxies in X-ray selected clusters and groups in dark energy survey data. I. Stellar mass growth of bright central galaxies since z ∼ 1.2

Journal Article · · Astrophysical Journal
; ; ; ; ;  [1]; ; ;  [2];  [3];  [4]; ; ;  [5]; ; ;  [6]; ;  [7];
  1. Department of Physics, University of Michigan, Ann Arbor, MI 48109 (United States)
  2. Department of Physics and Astronomy, Pevensey Building, University of Sussex, Brighton, BN1 9QH (United Kingdom)
  3. Department of Astronomy, Yale University, New Haven, CT, 06511-8903 (United States)
  4. Korea Astronomy and Space Science Institute, 776, Daedeokdae-ro,Yuseong-gu, Daejeon, 305-348 (Korea, Republic of)
  5. Department of Physics, Ludwig-Maximilians-Universität, Scheinerstr. 1, D-81679 München (Germany)
  6. Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth, PO1 3FX (United Kingdom)
  7. Department of Physics and Santa Cruz Institute for Particle Physics, University of California, Santa Cruz, CA 95064 (United States)

Using the science verification data of the Dark Energy Survey for a new sample of 106 X-ray selected clusters and groups, we study the stellar mass growth of bright central galaxies (BCGs) since redshift z ∼ 1.2. Compared with the expectation in a semi-analytical model applied to the Millennium Simulation, the observed BCGs become under-massive/under-luminous with decreasing redshift. We incorporate the uncertainties associated with cluster mass, redshift, and BCG stellar mass measurements into an analysis of a redshift-dependent BCG-cluster mass relation, m{sub ∗}∝(((M{sub 200})/(1.5×10{sup 14}M{sub ⊙}))){sup 0.24±0.08}(1+z){sup −0.19±0.34}, and compare the observed relation to the model prediction. We estimate the average growth rate since z = 1.0 for BCGs hosted by clusters of M{sub 200,z} = 10{sup 13.8} M{sub ⊙}; at z = 1.0: m{sub *,BCG} appears to have grown by 0.13 ± 0.11 dex, in tension at the ∼2.5σ significance level with the 0.40 dex growth rate expected from the semi-analytic model. We show that the build-up of extended intracluster light after z = 1.0 may alleviate this tension in BCG growth rates.

OSTI ID:
22882302
Journal Information:
Astrophysical Journal, Vol. 816, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Since 2009, the country of publication for this journal is the UK.; ISSN 0004-637X
Country of Publication:
United Kingdom
Language:
English

Cited By (20)

The evolution in the stellar mass of brightest cluster galaxies over the past 10 billion years journal May 2016
The Dark Energy Survey: more than dark energy – an overview journal March 2016
Selection bias in dynamically measured supermassive black hole samples: its consequences and the quest for the most fundamental relation journal March 2016
The spatial correlation of bent-tail galaxies and galaxy clusters journal October 2018
Dark Energy Surveyed Year 1 results: calibration of cluster mis-centring in the redMaPPer catalogues journal May 2019
Galaxies in X-ray selected clusters and groups in Dark Energy Survey data – II. Hierarchical Bayesian modelling of the red-sequence galaxy luminosity function journal June 2019
Dark Energy Survey Year 1 results: the effect of intracluster light on photometric redshifts for weak gravitational lensing journal July 2019
The growth of brightest cluster galaxies and intracluster light over the past 10 billion years journal November 2019
The Impact of Environment on the Stellar Mass–Halo Mass Relation journal June 2018
Evidence for the Existence of Abundant Intracluster Light at z = 1.24 journal July 2018
Dark Energy Survey Year 1 Results: Detection of Intracluster Light at Redshift ∼ 0.25 journal April 2019
The Impact of Environment on Late-time Evolution of the Stellar Mass–Halo Mass Relation journal June 2019
The Dark Energy Survey: more than dark energy - an overview text January 2016
Selection bias in dynamically-measured super-massive black hole samples: its consequences and the quest for the most fundamental relation text January 2016
The evolution in the stellar mass of Brightest Cluster Galaxies over the past 10 billion years text January 2016
Galaxies in X-ray Selected Clusters and Groups in Dark Energy Survey Data II: Hierarchical Bayesian Modeling of the Red-Sequence Galaxy Luminosity Function preprint January 2017
The Impact of Environment on the Stellar Mass - Halo Mass Relation text January 2017
Evidence for the existence of abundant intracluster light at z= 1.24 text January 2018
Dark Energy Survey Year 1 results: Detection of Intra-cluster Light at Redshift $\sim$ 0.25 text January 2018
The Impact of Environment on Late Time Evolution of the Stellar Mass - Halo Mass Relation text January 2019