2007MNRAS.379..317H

Query : 2007MNRAS.379..317H

2007MNRAS.379..317H - Mon. Not. R. Astron. Soc., 379, 317-330 (2007/July-3)

A comparison of weak-lensing masses and X-ray properties of galaxy clusters.

HOEKSTRA H.

Abstract (from CDS):

We present measurements of the masses of 20 X-ray luminous clusters of galaxies at intermediate redshifts, determined from a weak-lensing analysis of deep archival R-band data obtained using the Canada-France-Hawaii Telescope. Compared to previous work, our analysis accounts for a number of effects that are typically ignored, but can lead to small biases, or incorrect error estimates. We derive masses that are essentially model-independent and find that they agree well with measurements of the velocity dispersion of cluster galaxies and with the results of X-ray studies. Assuming a power law between the lensing mass and the X-ray temperature, M2500∝ Tα, we find a best-fitting slope of α = 1.34+0.30–0.28. This slope agrees with self-similar cluster models and studies based on X-ray data alone. For a cluster with a temperature of kT = 5 keV we obtain a mass M2500= (1.4±0.2)x1014h–1M☉ in fair agreement with recent Chandra and XMM studies.

Abstract Copyright: 2007 The Author. Journal compilation © 2007 RAS

Journal keyword(s): gravitational lensing - galaxies: clusters: general - cosmology: observations - dark matter

Simbad objects: 21

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Number of rows : 21
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 ClG 0016+16 ClG 00 18 33.3 +16 26 36           ~ 517 0
2 ZwCl 0024+1652 ClG 00 26 35.6 +17 09 32     18.35     ~ 648 1
3 ACO 68 ClG 00 37 06.2 +09 09 33           ~ 195 0
4 ACO 209 ClG 01 31 52.9 -13 36 53           ~ 326 0
5 ACO 267 ClG 01 52 43.016 +00 59 58.90           ~ 241 0
6 ACO 370 ClG 02 39 50.5 -01 35 08           ~ 825 0
7 ACO 383 ClG 02 48 03.3915 -03 31 45.228           ~ 389 0
8 ACO 750 ClG 09 09 06.7 +11 01 48           ~ 105 1
9 ACO 963 ClG 10 17 03.4 +39 02 56           ~ 414 0
10 ClG 1224+20 ClG 12 27 14.9 +19 51 06   19.0       ~ 96 0
11 ClG 1231+15 ClG 12 33 55.3 +15 25 58     18.5     ~ 54 0
12 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
13 ACO 1763 ClG 13 35 20.1 +41 00 04           ~ 335 0
14 ZwCl 1358+6245 ClG 13 59 54.3 +62 30 36     18.5     ~ 370 0
15 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 727 1
16 ZwCl 1455+2232 ClG 14 57 15.2 +22 20 30     18.62 20.04   ~ 309 0
17 ClG J1514+3636 ClG 15 14 22.0 +36 36 22     19.0     ~ 136 0
18 ClG 1621+26 ClG 16 23 35.7 +26 33 50           ~ 145 0
19 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 827 1
20 ACO 2219 ClG 16 40 22.1 +46 42 20           ~ 381 0
21 ACO 2390 ClG 21 53 37.4 +17 41 46           ~ 732 2

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