1999ApJ...520...78H

Query : 1999ApJ...520...78H

1999ApJ...520...78H - Astrophys. J., 520, 78-86 (1999/July-3)

Observational tests of the mass-temperature relation for galaxy clusters.

HORNER D.J., MUSHOTZKY R.F. and SCHARF C.A.

Abstract (from CDS):

We examine the relationship between the mass and X-ray gas temperature of galaxy clusters using data drawn from the literature. Simple theoretical arguments suggest that the mass of a cluster is related to the X-ray temperature as M∝T3/2X. Virial theorem mass estimates based on cluster galaxy velocity dispersions seem to be accurately described by this scaling with a normalization consistent with that predicted by the simulations of Evrard, Metzler, and Navarro. X-ray mass estimates that employ spatially resolved temperature profiles also follow a T3/2X scaling although with a normalization about 40% lower than that of the fit to the virial masses. However, the isothermal β-model and X-ray surface brightness deprojection masses follow a steeper ∝T1.8–2.0X scaling. The steepness of the isothermal estimates is due to their implicitly assumed dark matter density profile of ρ(r)∝r–2 at large radii, whereas observations and simulations suggest that clusters follow steeper profiles [e.g., ρ(r)∝r–2.4].

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Clusters: General - X-Rays: Galaxies

Simbad objects: 50

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Number of rows : 50
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 ACO 85 ClG 00 41 36.21 -09 19 30.4           ~ 974 0
2 ACO 119 ClG 00 56 08.57 -01 12 00.8           ~ 577 2
3 NAME NGC 507 Group GrG 01 23 39.91 +33 15 21.8           ~ 82 0
4 ACO 194 ClG 01 26 01.3 -01 22 02           ~ 363 2
5 ACO 262 ClG 01 52 50.4 +36 08 46           ~ 727 1
6 ACO 400 ClG 02 57 37.4 +06 00 45           ~ 408 3
7 ACO 399 ClG 02 57 56.4 +13 00 59           ~ 420 0
8 ACO 401 ClG 02 58 50.3 +13 34 07           ~ 592 0
9 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
10 ZwCl 0335+0956 ClG 03 38 35.3 +09 57 54           ~ 402 1
11 ACO 478 ClG 04 13 24.8 +10 27 52           ~ 522 0
12 ACO 3266 ClG 04 31 26.4 -61 25 17           ~ 447 0
13 ACO 496 ClG 04 33 40.8 -13 14 34           ~ 728 2
14 ACO 539 ClG 05 16 35.1 +06 27 14           ~ 255 2
15 ACO 3376 ClG 06 01 25.000 -39 59 51.00           ~ 334 0
16 ACO 3391 ClG 06 26 15.4 -53 40 52           ~ 222 1
17 ACO 3395 ClG 06 27 31.1 -54 23 58           ~ 229 0
18 NAME NGC 2300 Group GrG 07 32 22.84 +85 42 26.3           ~ 59 0
19 ACO 754 ClG 09 09 14.8 -09 40 35           ~ 695 1
20 ACO 780 ClG 09 18 30 -12 15.7           ~ 469 0
21 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 905 1
22 HCG 51 CGG 11 22 21.6 +24 19 41   14.9       ~ 86 0
23 MKW 3 ClG 11 48 29 -03 10.7     14.88     ~ 52 1
24 NAME NGC 4073 Group GrG 12 04 44.08 +01 48 40.9     13.53     ~ 292 0
25 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
26 ACO 3526 ClG 12 48 49.2 -41 18 17           ~ 1154 2
27 HCG 62 CGG 12 53 05.6 -09 12 21           ~ 313 0
28 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
29 NAME NGC 5044 Group GrG 13 14 22.7 -16 32 04           ~ 186 0
30 ACO 3558 ClG 13 28 03.2 -31 31 35           ~ 476 2
31 ACO 3571 ClG 13 47 32.4 -32 50 12           ~ 308 2
32 ACO 1795 ClG 13 48 47.4 +26 34 55           ~ 1330 0
33 ACO S 753 ClG 14 03 35.9 -33 59 16           ~ 91 1
34 ACO 2029 ClG 15 10 54.2 +05 44 23           ~ 1020 0
35 ACO 2063 ClG 15 23 01.8 +08 38 22           ~ 414 2
36 BAX 233.1222+04.6817 ClG 15 32 32.02 +04 40 51.6     15.13     ~ 66 0
37 ACO 2107 ClG 15 39 39.04 +21 46 57.8           ~ 270 0
38 ACO 2142 ClG 15 58 26.5 +27 13 52           ~ 825 0
39 ACO 2147 ClG 16 02 11.96 +15 55 11.5           ~ 416 0
40 AWM 4 ClG 16 04 52.01 +23 56 26.9     14.38     ~ 141 0
41 ACO 2163 ClG 16 15 46.1 -06 08 50           ~ 586 0
42 ACO 2199 ClG 16 28 34.5 +39 32 26           ~ 1206 1
43 BAX 249.5848-64.5165 ClG 16 38 13.2 -64 21 21           ~ 123 0
44 ACO 2256 ClG 17 03 37.5 +78 37 23           ~ 928 1
45 BAX 258.1082-23.3759 ClG 17 12 26.3 -23 21 38           ~ 303 0
46 ACO 2319 ClG 19 21 14.0 +43 56 57           ~ 495 1
47 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 676 1
48 ACO 2634 ClG 23 38 18.4 +27 01 37           ~ 515 2
49 ACO 2670 ClG 23 54 10.51 -10 23 06.8           ~ 364 0
50 ACO 4059 ClG 23 57 02.2 -34 45 58           ~ 400 1

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