Photometric redshifts as a tool to study the Coma cluster galaxy populations

Abstract

We investigate the Coma cluster galaxy luminosity function (GLF) at faint magnitudes, in particular in the u* band by applying photometric redshift techniques applied to deep u*, B, V, R, I images covering a region of ~1deg2 (R 24). Global and local GLFs in the B, V, R and I bands obtained with photometric redshift selection are consistent with our previous results based on a statistical background subtraction. In the area covered only by the u* image, the GLF was also derived after applying a statistical background subtraction. The GLF in the u* band shows an increase of the faint end slope towards the outer regions of the cluster (from alpha~1 in the cluster center to alpha~2 in the cluster periphery). This could be explained assuming a short burst of star formation in these galaxies when entering the cluster. The analysis of the multicolor type spatial distribution reveals that late type galaxies are distributed in clumps in the cluster outskirts, where X-ray substructures are also detected and where the GLF in the u* band is steeper.

14 pages, 2 figures in jpeg format, accepted in A&A

References in corpus (23)

• Stellar population synthesis at the resolution of 2003
• Accurate photometric redshifts for the CFHT Legacy Survey calibrated using the VIMOS VLT Deep Survey
• Spectral Energy Distributions of Hard X-ray selected AGNs in the XMDS Survey
• The VIMOS-VLT Deep Survey: Evolution of the galaxy luminosity function up to z=2 in first epoch data
• The Vimos VLT Deep Survey: Stellar mass segregation and large-scale galaxy environment in the redshift range 0.2<z<1.4
• The strong transformation of spiral galaxies infalling into massive clusters at z~0.2
• EDisCS -- the ESO Distant Cluster Survey -- Sample Definition and Optical Photometry
• The dynamical state of the Coma cluster with XMM-Newton
• The build-up of the Coma cluster by infalling substructures
• The HST/ACS Coma Cluster Survey: I - Survey Objectives and Design
• The VIMOS-VLT Deep Survey - The evolution of galaxy clustering per spectral type to z~1.5
• Galaxy luminosity function per morphological type up to z=1.2
• On the luminosity function of galaxies in groups in the Sloan Digital Sky Survey
• Large scale diffuse light in the Coma cluster: a multi-scale approach
• Deep and wide field imaging of the Coma cluster: the data
• Clustering properties of a type-selected volume-limited sample of galaxies in the CFHTLS
• Galaxy groups in the 2dF redshift survey: Galaxy Spectral Type Segregation in Groups
• A deep wide survey of faint low surface brightness galaxies in the direction of the Coma cluster of galaxies
• The large extent of dark matter haloes probed by the formation of tidal dwarf galaxies
• Spatial variations of the optical galaxy luminosity functions and red sequences in the Coma cluster: clues to its assembly history
• The Early-type Dwarf-to-Giant Ratio and Substructure in the Coma Cluster
• The galaxy luminosity function of the Abell 496 cluster and its spatial variations
• Coma cluster object populations down to M_R~-9.5

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• The XMM-LSS survey: optical assessment and properties of different X-ray selected cluster classes
• J-PLUS: analysis of the intracluster light in the Coma cluster
• Detailed Cluster Mass and Light profiles of A1703, A370 and RXJ1347-11 from Deep Subaru Imaging
• Group-finding with photometric redshifts: The Photo-z Probability Peaks algorithm
• Very deep spectroscopy of the Coma cluster line of sight: exploring new territories
• The DAFT/FADA survey. I.Photometric redshifts along lines of sight to clusters in the z=[0.4,0.9] interval
• The evolution of the cluster optical galaxy luminosity function between z=0.4 and 0.9 in the DAFT/FADA survey
• The Galaxy Luminosity Functions down to M_R=-10 in the Coma Cluster
• Comparison of the properties of two fossil groups of galaxies with the normal group NGC 6034 based on multiband imaging and optical spectroscopy
• Galaxy Clusters in the IRAC Dark Field II: Mid-IR Sources
• The IRAC Dark Field; Far- Infrared to X-ray Data
• AKARI Observation of the North Ecliptic Pole (NEP) Supercluster at z = 0.087: mid-infrared view of transition galaxies
• Cluster and cluster galaxy evolution history from IR to X-ray observations of the young cluster RX J1257.2+4738 at z=0.866
• On the nature of faint Low Surface Brightness galaxies in the Coma cluster
• A search for faint low surface brightness galaxies in the relaxed cluster Abell 496