The Galaxy Population of the Core of Coma Cluster

Abstract

In this paper we present the structural properties and morphology of galaxies in the central region of the Coma Cluster brighter than $19.5^m$ in the $F814W$ band. from the HST/ACS Coma Cluster Treasury Survey. Using mainly spectroscopic redshifts, we find 132 members from our sample of 219 galaxies. In our sample of 132 members, we find 51 non-dwarfs and 81 dwarfs and amongst our 32 non-members, we find 4 dwarfs and 28 non dwarfs. We do not have redshifts for the remaining 55 galaxies. We present bulge-disc decomposition of the sample using GALFIT and obtain parameters for our sample. Using visual inspection of residuals, we do a a morphological classification of the galaxies. We studied the relation of morphological types with Bulge to Total Light Ratio ($B/T$), color magnitude relation (CMR), Sérsic index ($n$), Kormendy relation and cross-correlations between these parameters for the bulges and galaxies. %Of the members, six galaxies have been classified as E/SBO on the basis of their residuals and contour maps which show a boxy/peanut bulge at the center of galaxy. So we have little confusion to classify the elliptical or SBO, we have given E/SBO. This work helps us understand important relations between various parameters like $B/T$, color and $n$ as well as insights into the merger history of these galaxies in terms of their positions in the Kormendy Diagram and their Sérsic indices. Using statistical methods, we find that the there are significantly more E/SO, ESOs galaxies in the member population compared to non-members.

arXiv commentv2, Accepted 2021 November 22 in MNRAS, 10 pages

References in corpus (37)

• The Seventh Data Release of the Sloan Digital Sky Survey
• Detailed Structural Decomposition of Galaxy Images
• The Eleventh and Twelfth Data Releases of the Sloan Digital Sky Survey: Final Data from SDSS-III
• Secular Evolution and the Formation of Pseudobulges in Disk Galaxies
• Galaxy Zoo : Morphologies derived from visual inspection of galaxies from the Sloan Digital Sky Survey
• Structural Properties of Pseudo-Bulges, Classical Bulges and Elliptical Galaxies: an SDSS Perspective
• A new chemo-evolutionary population synthesis model for early-type galaxies. I: Theoretical basis
• The Structure of Classical Bulges And Pseudobulges: The Link Between Pseudobulges And Sersic Index
• The evolution of the galactic morphological types in clusters
• GEMS: The Size Evolution of Disk Galaxies
• The colour magnitude relation for galaxies in the Coma cluster
• The HST/ACS Coma Cluster Survey. X. Nuclear star clusters in low-mass early-type galaxies: scaling relations
• Quantitative Estimates of Environmental Effects on the Star Formation Rate of Disk Galaxies in Clusters of Galaxies
• The Dependence of Galaxy Morphology and Structure on Environment and Stellar Mass
• The HST/ACS Coma Cluster Survey: I - Survey Objectives and Design
• The HST/ACS Coma Cluster Survey III. Structural Parameters of Galaxies using single-Sérsic Fits
• The morphology-density relation in X-ray bright galaxy groups
• The HST/ACS Coma Cluster Survey: V - Compact Stellar Systems in the Coma Cluster
• Quantitative Morphology of Galaxies in the Core of the Coma Cluster
• A photometric and spectroscopic study of dwarf and giant galaxies in the Coma cluster - II. Spectroscopic observations
• Environmental Effects in the Structural Parameters of Galaxies in the Coma Cluster
• Dissecting the Red Sequence: The Bulge and Disc Colours of Early-Type Galaxies in the Coma Cluster
• Ultra-Compact Dwarfs in the Coma Cluster
• The HST/ACS Coma Cluster Survey. II. Data Description and Source Catalogs
• The HST/ACS Coma Cluster Survey: VII - Colour Gradients in Giant and Dwarf Early-Type Galaxies
• Colours of Bulges and Discs within Galaxy Clusters and the Signature of Disc Fading on Infall
• The HST/ACS Coma Cluster Survey. VIII. Barred Disk Galaxies in the Core of the Coma Cluster
• Formation of central massive objects via tidal compression
• Star formation, starbursts and quenching across the Coma supercluster
• The HST/ACS Coma Cluster Survey - VII. Structure and Assembly of Massive Galaxies in the Center of the Coma Cluster
• The Morphology Dependence of Luminosity Segregation in the Coma Cluster
• A Spitzer Study of Pseudobulges in S0 Galaxies : Secular Evolution of Disks
• Morphology of galaxies in the Coma cluster region down to M_B=-14.25. I. A catalog of 473 members
• The entropy of elliptical galaxies in Coma: a clue for a distance indicator
• Beyond Sérsic + exponential disc morphologies in the Coma Cluster
• The evolution of dwarf galaxies in the Coma supercluster
• Morphologies of AGN host galaxies using HST/ACS in the CDFS-GOODS field

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• A deep near-infrared view of the Ophiuchus galaxy cluster