English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We investigate statistical properties of LRGs in a sample of X-ray selectedgalaxy clusters at intermediate redshift ($0.2\le z\le0.6$). The LRGs areselected based on carefully designed color criteria, and the cluster membershipis assessed via photometric redshifts. As clusters and LRGs are both viewed aspromising tracer of the underlying dark matter distribution, understanding thedistribution of LRGs within clusters is an important issue.  Our main findings include:  1. The halo occupation distribution of LRGs inside our cluster sample is$N(M) = k\times (M/10^{14})^{a}$ where $a=0.620\pm 0.105 $ and $k=1.425\pm0.285$ assuming a Poisson distribution for $N(M)$.  2. The halo occupation distribution of LRGs ($N(M)$) and the satellitedistribution of LRGs ($N-1(M)$) are both consistent with being Poisson. To bemore quantitative, we find $Var(N)/<N>= 1.428\pm 0.351$ and $Var(N-1)/<N-1> =1.823 \pm 0.496$  3. The radial profile of LRGs within clusters when fitted with a NFW profilegives a concentration of $17.5^{+7.1}_{-4.3}$ ($6.0^{+3.2}_{-1.9}$) including(excluding) BLRGs (Brightest LRGs).  We also discuss the implications of these observations on the evolution ofmassive galaxies in clusters.

Luminous Red Galaxy Population in Clusters at $0.2\le z\le 0.6$