2007A&A...472..749A


Query : 2007A&A...472..749A

2007A&A...472..749A - Astronomy and Astrophysics, volume 472, 749-755 (2007/9-4)

Coma cluster object populations down to MR ~-9.5.

ADAMI C., PICAT J.P., DURRET F., MAZURE A., PELLO R. and WEST M.

Abstract (from CDS):

This study follows a recent analysis of the galaxy luminosity functions and colour-magnitude red sequences in the Coma cluster. We analyze here the distribution of very faint galaxies and globular clusters in an east-west strip of ∼42x7arcmin2 crossing the Coma cluster center (hereafter the CS strip) down to the unprecedented faint absolute magnitude of MR~-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.
Result. 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.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: individual: Coma - galaxies: luminosity function, mass function

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 1054 1
2 NGC 4858 EmG 12 59 02.0718950520 +28 06 56.228264028 15.33 15.5 15.02     ~ 108 0
3 NGC 4860 GiG 12 59 03.9057463440 +28 07 25.326557148 14.84 14.7 13.24     ~ 151 0
4 NGC 4874 LIN 12 59 35.7093764280 +27 57 33.293892204 13.01 13.7 11.40 12.122 11.386 ~ 766 3
5 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4606 2
6 NGC 4889 EmG 13 00 08.097 +27 58 37.29 12.93 13.0 11.30 11.652 10.906 ~ 684 1

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2023.02.08-02:10:44

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