2011ApJ...726...48H

Query : 2011ApJ...726...48H

2011ApJ...726...48H - Astrophys. J., 726, 48 (2011/January-1)

The mass-lx relation for moderate luminosity X-ray clusters.

HOEKSTRA H., DONAHUE M., CONSELICE C.J., McNAMARA B.R. and VOIT G.M.

Abstract (from CDS):

We present measurements of the masses of a sample of 25 moderate X-ray luminosity clusters of galaxies from the 160 square degree ROSAT survey. The masses were obtained from a weak-lensing analysis of deep F814W images obtained using the Advanced Camera for Surveys. We present an accurate empirical correction for the effect of charge transfer (in)efficiency on the shapes of faint galaxies. A significant lensing signal is detected around most of the clusters. The lensing mass correlates tightly with the cluster richness. We measured the intrinsic scatter in the scaling relation between M2500 and LX to be. The best-fit power-law slope and normalization are found to be α = 0.68±0.07 and MX= (1.2±0.12)xh–1701014 M ☉(for LX= 2x1044 h –270 erg/s). These results agree well with a number of recent studies, but the normalization is lower compared to the study of Rykoff et al. One explanation for this difference may be the fact that (sub)structures projected along the line of sight boost both the galaxy counts and the lensing mass. Such superpositions lead to an increased mass at a given LX when clusters are binned by richness.

Abstract Copyright: ∼

Journal keyword(s): cosmology: observations - dark matter - X-rays: galaxies: clusters

Simbad objects: 32

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Number of rows : 32
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 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
2 ZwCl 0024+1652 ClG 00 26 35.6 +17 09 32     18.35     ~ 648 1
3 ClG 0055-2754 ClG 00 56 56.8 -27 40 29   21.9       ~ 86 0
4 BAX 017.5750+19.6397 ClG 01 10 18.0 +19 38 23           ~ 19 0
5 ACO 209 ClG 01 31 52.9 -13 36 53           ~ 326 0
6 BAX 028.5617-59.6300 ClG 01 54 12.5 -59 37 33           ~ 13 0
7 ACO 370 ClG 02 39 50.5 -01 35 08           ~ 825 0
8 ACO 383 ClG 02 48 03.3915 -03 31 45.228           ~ 389 0
9 ClG J0522-3624 ClG 05 22 13.8 -36 24 49           ~ 41 0
10 BAX 126.5267+26.4297 ClG 08 26 09.6 +26 24 54           ~ 13 0
11 BAX 130.2808+64.3786 ClG 08 41 07.4 +64 22 41           ~ 15 0
12 ClG J0847+3449 ClG 08 47 11.3 +34 49 16           ~ 27 0
13 MCXC J0910.6+4248 ClG 09 10 39.7 +42 48 41           ~ 10 0
14 [VV2006] J092112.8+452905 QSO 09 21 12.8304560016 +45 29 03.987252096   19.09 18.71     ~ 38 2
15 ClG J0926+1242 ClG 09 26 36.6 +12 42 59           ~ 43 0
16 BAX 149.4717+65.5750 ClG 09 57 53.2 +65 34 30           ~ 16 0
17 [VMF98] 88 ClG 10 15 08.5 +49 31 32           ~ 11 0
18 BAX 169.3000+17.7400 ClG 11 17 12.0 +17 44 24           ~ 11 0
19 BAX 169.3587+07.7264 ClG 11 17 26.1 +07 43 35           ~ 33 0
20 ZwCl 1120+1425 ClG 11 23 10.6 +14 09 40           ~ 13 0
21 ClG 1231+15 ClG 12 33 55.3 +15 25 58     18.5     ~ 54 0
22 ClG J1354-0221 ClG 13 54 17.00 -02 22 13.1           ~ 52 0
23 ClG J1524+0957 ClG 15 24 40.3 +09 57 35           ~ 64 0
24 BAX 235.2221+14.7594 ClG 15 40 53.3 +14 45 34           ~ 16 0
25 BAX 250.6621+39.5981 ClG 16 42 38.9 +39 35 53           ~ 16 0
26 1AXG J205950-4245 ClG 20 59 50.7 -42 45 38           ~ 13 0
27 [VMF98] 200 ClG 21 08 51.2 -05 16 49           ~ 14 0
28 BAX 324.9937-43.0872 ClG 21 39 58.5 -43 05 14           ~ 12 0
29 ClG J2146+0422 ClG 21 46 04.8 +04 23 19           ~ 25 0
30 BAX 330.6871-19.0361 ClG 22 02 44.9 -19 02 10           ~ 16 0
31 NAME HDF-S reg 22 32 56 -60 33.0           ~ 580 0
32 ClG J2328+1453 ClG 23 28 52.3 +14 52 43           ~ 25 0

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