Coma cluster object populations down to M_R~-9.5

Abstract

This study follows a recent analysis of the galaxy luminosity functions and colour-magnitude red sequences in the Coma cluster (Adami et al. 2007). We analyze here the distribution of very faint galaxies and globular clusters in an east-west strip of $\sim 42\times 7$ arcmin${}^2$ crossing the Coma cluster center (hereafter the CS strip) down to the unprecedented faint absolute magnitude of M${}_R\sim -9.5$. This work is based on deep images obtained at the CFHT with the CFH12K camera in the B, R, and I bands. The analysis shows that the observed properties strongly depend on the environment, and thus on the cluster history. When the CS is divided into four regions, the westernmost region appears poorly populated, while the regions around the brightest galaxies NGC 4874 and NGC 4889 (NGC 4874 and NGC 4889 being masked) are dominated by faint blue galaxies. They show a faint luminosity function slope of -2, very significantly different from the field estimates. Results are discussed in the framework of galaxy destruction (which can explain part of the very faint galaxy population) and of structures infalling on to Coma.

To be published in A&A

References in corpus (20)

• The VIMOS-VLT Deep Survey: Evolution of the galaxy luminosity function up to z=2 in first epoch data
• The Luminosity Function of the Coma Cluster Core for -25<M_R<-11
• The strong transformation of spiral galaxies infalling into massive clusters at z~0.2
• The Globular Cluster Systems of the Early-type Galaxies NGC3379, NGC4406, and NGC4594 and Implications for Galaxy Formation
• The fate of spiral galaxies in clusters: the star formation history of the anemic Virgo cluster galaxy NGC 4569
• The VIRMOS deep imaging survey II: CFH12K BVRI optical data for the 0226-04 deep field
• The colour magnitude relation for galaxies in the Coma cluster
• The dynamical state of the Coma cluster with XMM-Newton
• The Hawaii K-Band Galaxy Survey. II. Bright K-band Imaging
• The Effects of Photoionization on Galaxy Formation -- III: Environmental Dependence in the Luminosity Function
• U, B and r band luminosity functions of galaxies in the Coma cluster
• The dwarf galaxy population of the Coma cluster to M_R=-11
• Large scale diffuse light in the Coma cluster: a multi-scale approach
• Dissecting the luminosity function of the Coma cluster of galaxies using CFHT wide field images
• Deep and wide field imaging of the Coma cluster: the data
• 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 r'-band luminosity function of Abell1367: a comparison with Coma
• The Faint End of the Luminosity Function in the Core of the Coma Cluster

Cited by in corpus (11)

• From dwarf spheroidals to cDs: Simulating the galaxy population in a LCDM cosmology
• Ultraviolet tails and trails in cluster galaxies: A sample of candidate gaseous stripping events in Coma
• Strange filamentary structures ("fireballs") around a merger galaxy in the Coma cluster of galaxies
• The Next Generation Virgo Cluster Survey (NGVS). XIII. The Luminosity and Mass Function of Galaxies in the Core of the Virgo Cluster and the Contribution from Disrupted Satellites
• Very deep spectroscopy of the Coma cluster line of sight: exploring new territories
• K2: A new method for the detection of galaxy clusters based on CFHTLS multicolor images
• The evolution of the cluster optical galaxy luminosity function between z=0.4 and 0.9 in the DAFT/FADA survey
• Photometric redshifts as a tool to study the Coma cluster galaxy populations
• The luminosity function of galaxies to $M_{BgVriz}\sim -14$ in $z\sim 0.3$ clusters
• Star formation history of KDG 61 and KDG 64 from spectroscopy and colour-magnitude diagrams
• The cluster Abell 780: an optical view