2000ApJ...545..141Z

Query : 2000ApJ...545..141Z

2000ApJ...545..141Z - Astrophys. J., 545, 141-144 (2000/December-2)

A comparison of central temperatures of the intracluster gas determined from X-ray and Sunyaev-Zeldovich measurements.

ZHANG T.-J. and WU X.-P.

Abstract (from CDS):

A combination of the X-ray imaging and Sunyaev-Zeldovich (SZ) measurements of clusters permits an indirect determination of the radial temperature profiles of intracluster gas, which requires no assumption about the dynamical properties and the equation of state for clusters. A comparison of such a derived gas temperature with that given by the X-ray spectral analysis constitutes an effective probe of properties of intracluster gas. Using the available data of 31 clusters in literature, we have performed the first comparison of the central gas temperatures provided by the two methods. The good agreement between these two independent temperature estimates suggests that the distribution of intracluster gas is essentially consistent with isothermality characterized by a mean polytropic index of γ=0.9±0.1.

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

Simbad objects: 31

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Number of rows : 31
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 ACO 85 ClG 00 41 36.21 -09 19 30.4           ~ 974 0
3 ACO 399 ClG 02 57 56.4 +13 00 59           ~ 420 0
4 ACO 401 ClG 02 58 50.3 +13 34 07           ~ 592 0
5 ACO 3112 ClG 03 17 52.9 -44 15 06           ~ 329 1
6 ACO 3158 ClG 03 43 07.5 -53 38 09           ~ 327 0
7 ACO 478 ClG 04 13 24.8 +10 27 52           ~ 522 0
8 ACO 3266 ClG 04 31 26.4 -61 25 17           ~ 447 0
9 ACO 665 ClG 08 30 45.2 +65 52 55           ~ 457 0
10 ACO 754 ClG 09 09 14.8 -09 40 35           ~ 695 1
11 ACO 773 ClG 09 17 51.3 +51 43 20           ~ 308 0
12 ACO 780 ClG 09 18 30 -12 15.7           ~ 469 0
13 ZwCl 1021+0426 ClG 10 23 39.0 +04 11 14   15.6 17.95     ~ 297 0
14 ACO 1413 ClG 11 55 12.87 +23 23 46.9           ~ 456 0
15 ACO 1651 ClG 12 59 27.3 -04 10 49           ~ 307 0
16 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
17 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
18 ACO 3558 ClG 13 28 03.2 -31 31 35           ~ 476 2
19 ACO 3571 ClG 13 47 32.4 -32 50 12           ~ 308 2
20 ACO 1795 ClG 13 48 47.4 +26 34 55           ~ 1330 0
21 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 727 1
22 ACO 2029 ClG 15 10 54.2 +05 44 23           ~ 1020 0
23 ACO 2142 ClG 15 58 26.5 +27 13 52           ~ 825 0
24 ACO 2163 ClG 16 15 46.1 -06 08 50           ~ 586 0
25 ACO 2204 ClG 16 32 47.7 +05 34 18           ~ 457 0
26 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 827 1
27 ACO 2256 ClG 17 03 37.5 +78 37 23           ~ 928 1
28 ACO 2255 ClG 17 12 56.0 +64 04 06           ~ 605 0
29 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 676 1
30 ACO 3921 ClG 22 49 59.0 -64 25 48           ~ 165 1
31 ACO 2597 ClG 23 25 19.70 -12 07 27.7           ~ 572 0

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