论文标题
贫穷和丰富簇中最亮星系星系的结构分析
Structural Analysis of Brightest Cluster Galaxies in Poor and Rich Clusters
论文作者
论文摘要
研究最亮星系星系（BCG）的结构参数提供了了解其形成和进化的重要线索。我们介绍了从加拿大 - 弗朗西 - 弗朗西·霍瓦伊望远镜传统调查中绘制的1685个最亮星系星系（BCG）的表面亮度曲线拟合的结果，红移范围为0.1美元<z <z <1.0 $。我们拟合具有单个Sérsic个人资料的BCG的$ R $ band图像。根据宿主簇丰富度将样品分为两组，以研究环境的影响。我们的结果表明，丰富的簇中的BCG在统计学上比较差的群集中的BCG大。我们为Kormendy，$ log \ r_e-log \ n $和尺寸左度关系提供最佳合适的线性回归。此外，我们检查了结构参数的演变，但是由于z $ \ sim $ 1，样本中的BCG并未显示出很大的变化。
Studying structural parameters of brightest cluster galaxies (BCGs) provides important clues to understand their formation and evolution. We present the results of the surface brightness profile fitting of 1685 brightest cluster galaxies (BCGs) drawn from the Canada-France-Hawaii Telescope Legacy Survey in the redshift range of $0.1 < z < 1.0$. We fit $r$-band images of BCGs with a single Sérsic profile. The sample is splitted into two groups based on the host cluster richness to investigate the impact of the environment. Our results suggest that BCGs in rich clusters are statistically larger than their counterparts in poor clusters. We provide best-fit linear regressions for the Kormendy, the $log \ R_e - log \ n$, and the size-luminosity relations. In addition, we examined the evolution of the structural parameters, however the BCGs in our sample do not show a significant size change since z$\sim$1.
