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Structural Analysis of Brightest Cluster Galaxies in Poor and Rich Clusters

Eman ShaabanSinan AlisMehmet Bektasoglu ...+3 Suleyman Fisek
Dec 2022
摘要
Studying structural parameters of brightest cluster galaxies (BCGs) providesimportant clues to understand their formation and evolution. We present theresults of the surface brightness profile fitting of 1685 brightest clustergalaxies (BCGs) drawn from the Canada-France-Hawaii Telescope Legacy Survey inthe redshift range of $0.1 < z < 1.0$. We fit $r$-band images of BCGs with asingle S\'ersic profile. The sample is splitted into two groups based on thehost cluster richness to investigate the impact of the environment. Our resultssuggest that BCGs in rich clusters are statistically larger than theircounterparts in poor clusters. We provide best-fit linear regressions for theKormendy, the $log \ R_e - log \ n$, and the size-luminosity relations. Inaddition, we examined the evolution of the structural parameters, however theBCGs in our sample do not show a significant size change since z$\sim$1.
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