2017MNRAS.467.4410A


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.28CET14:03:32

2017MNRAS.467.4410A - Mon. Not. R. Astron. Soc., 467, 4410-4423 (2017/June-1)

Deep spectroscopy of nearby galaxy clusters - II. The Hercules cluster.

AGULLI I., AGUERRI J.A.L., DIAFERIO A., DOMINGUEZ PALMERO L. and SANCHEZ-JANSSEN R.

Abstract (from CDS):

We carried out the deep spectroscopic observations of the nearby cluster A 2151 with AF2/WYFFOS@WHT. The caustic technique enables us to identify 360 members brighter than Mr = -16 and within 1.3R200. We separated the members into subsamples according to photometrical and dynamical properties such as colour, local environment and infall time. The completeness of the catalogue and our large sample allow us to analyse the velocity dispersion and the luminosity functions (LFs) of the identified populations. We found evidence of a cluster still in its collapsing phase. The LF of the red population of A 2151 shows a deficit of dwarf red galaxies. Moreover, the normalized LFs of the red and blue populations of A 2151 are comparable to the red and blue LFs of the field, even if the blue galaxies start dominating 1 mag fainter and the red LF is well represented by a single Schechter function rather than a double Schechter function. We discuss how the evolution of cluster galaxies depends on their mass: bright and intermediate galaxies are mainly affected by dynamical friction and internal/mass quenching, while the evolution of dwarfs is driven by environmental processes that need time and a hostile cluster environment to remove the gas reservoirs and halt the star formation.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: clusters: individual: A 2151 - galaxies: evolution - galaxies: luminosity function, mass function - galaxies: luminosity function, mass function

Simbad objects: 9

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Number of rows : 9

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 ACO 85 ClG 00 41 37.8 -09 20 33           ~ 774 0
2 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 978 1
3 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5704 0
4 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4134 2
5 NAME HERCULES SUPERCL SCG 15 47 +18.2           ~ 137 1
6 ACO 2147 ClG 16 02 17.2 +15 53 43           ~ 368 0
7 ACO 2151 ClG 16 05 15.0 +17 44 55           ~ 547 3
8 ACO 2152 ClG 16 05 22.4 +16 26 55           ~ 151 0
9 ACO 2199 ClG 16 28 37.0 +39 31 28           ~ 1088 1

    Equat.    Gal    SGal    Ecl

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2020.01.28-14:03:32

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