2015A&A...581A..31S


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.08CEST02:55:18

2015A&A...581A..31S - Astronomy and Astrophysics, volume 581A, 31-31 (2015/9-1)

The matter distribution in z ∼ 0.5 redshift clusters of galaxies. II. The link between dark and visible matter.

SOUCAIL G., FOEX G., POINTECOUTEAU E., ARNAUD M. and LIMOUSIN M.

Abstract (from CDS):

We present an optical analysis of a sample of 11 clusters built from the EXCPRES sample of X-ray selected clusters at intermediate redshift (z∼0.5). With a careful selection of the background galaxies, we provide the mass maps reconstructed from the weak lensing by the clusters. We compare them with the light distribution traced by the early-type galaxies selected along the red sequence for each cluster. The strong correlations between dark matter and galaxy distributions are confirmed, although some discrepancies arise, mostly for merging or perturbed clusters. The average M/L ratio of the clusters is found to be M/Lr=160±60 in solar units (with no evolutionary correction), in excellent agreement with similar previous studies. No strong evolutionary effects are identified, although the small sample size reduces the significance of the result. We also provide a individual analysis of each cluster in the sample with a comparison between the dark matter, the galaxies, and the gas distributions. Some of the clusters are studied in the optical for the first time.

Abstract Copyright:

Journal keyword(s): Gravitational lensing: weak - X-rays: galaxies: clusters - cosmology: observations - galaxies: clusters: general - matter dark

Simbad objects: 14

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Number of rows : 14

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 ClG 0016+16 ClG 00 18 33.3 +16 26 36           ~ 472 0
2 ClG 0451-03 ClG 04 54 10.9 -03 01 07     20.0     ~ 328 0
3 ClG 0657-56 ClG 06 58 29.6 -55 56 39           ~ 799 1
4 MCXC J0856.1+3756 ClG 08 56 08.5 +37 56 52           ~ 14 0
5 ACO 851 ClG 09 42 56.6 +46 59 22           ~ 308 0
6 RX J0943.0+4659 X 09 43 01.4 +46 59 43   18.9       ~ 3 0
7 ClG J1003+3253 ClG 10 03 04.1 +32 54 28           ~ 25 0
8 ClG J1120+4318 ClG 11 20 07.6 +43 18 07           ~ 53 0
9 MCS J1206.2-0847 ClG 12 06 12.2 -08 48 02           ~ 182 0
10 ClG 1241+17 ClG 12 44 02.6 +16 54 11     19.0     ~ 33 0
11 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1021 0
12 ClG J1347-1145 ClG 13 47 33.5 -11 45 42           ~ 469 0
13 ClG 1621+26 ClG 16 23 35.7 +26 33 50           G0V 133 0
14 1RXS J222834.4+203647 ClG 22 28 37.1 +20 36 31           ~ 102 0

    Equat.    Gal    SGal    Ecl

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2020.07.08-02:55:18

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