The dependence of cluster galaxy properties on the central entropy of their host cluster

Abstract

We present a study of the connection between brightest cluster galaxies (BCGs) and their host galaxy clusters. Using galaxy clusters at $0.1<z<0.3$ from the Hectospec Cluster Survey (HeCS) with X-ray information from the Archive of {\it Chandra} Cluster Entropy Profile Tables (ACCEPT), we confirm that BCGs in low central entropy clusters are well aligned with the X-ray center. Additionally, the magnitude difference between BCG and the 2nd brightest one also correlates with the central entropy of the intracluster medium. From the red-sequence (RS) galaxies, we cannot find significant dependence of RS color scatter and stellar population on the central entropy of the intracluster medium of their host cluster. However, BCGs in low entropy clusters are systematically less massive than those in high entropy clusters, although this is dependent on the method used to derive the stellar mass of BCGs. In contrast, the stellar velocity dispersion of BCGs shows no dependence on BCG activity and cluster central entropy. This implies that the potential of the BCG is established earlier and the activity leading to optical emission lines is dictated by the properties of the intracluster medium in the cluster core.

16 pages, 9 figures, 2 tables. Published in ApJ

References in corpus (19)

• The Host Galaxies and Classification of Active Galactic Nuclei
• The propagation of uncertainties in stellar population synthesis modeling I: The relevance of uncertain aspects of stellar evolution and the IMF to the derived physical properties of galaxies
• K-corrections and filter transformations in the ultraviolet, optical, and near infrared
• An ultra-deep near-infrared spectrum of a compact quiescent galaxy at z=2.2
• Galaxy Evolution from Halo Occupation Distribution Modeling of DEEP2 and SDSS Galaxy Clustering
• Intracluster Medium Entropy Profiles for a Chandra Archival Sample of Galaxy Clusters
• A primer on hierarchical galaxy formation: the semi-analytical approach
• The Regulation of Cooling and Star Formation in Luminous Galaxies by AGN Feedback and the Cooling-Time/Entropy Threshold for the Onset of Star Formation
• An Entropy Threshold for Strong H-alpha and Radio Emission in the Cores of Galaxy Clusters
• The Galaxy Content of SDSS Clusters and Groups
• LoCuSS: Comparison of Observed X-ray and Lensing Galaxy Cluster Scaling Relations with Simulations
• Brightest Cluster Galaxies at the Present Epoch
• The evolution of the brightest cluster galaxies since z~1 from the ESO Distant Cluster Survey (EDisCS)
• Cosmology and Astrophysics from Relaxed Galaxy Clusters I: Sample Selection
• The Scaling of Stellar Mass and Central Stellar Velocity Dispersion for Quiescent galaxies at z < 0.7
• The Complex Structure of the Cl 1604 Supercluster at z~0.9
• A Large Mass of H2 in the Brightest Cluster Galaxy in Zwicky 3146
• Multiwavelength investigations of co-evolution of bright custer galaxies
• Linking galaxies to dark matter haloes at $z\sim 1$ : dependence of galaxy clustering on stellar mass and specific star formation rate

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• New observational recipes for measuring dynamical state of galaxy clusters
• Co-evolution of the Brightest Cluster Galaxies and their Host Clusters in IllustrisTNG