1999ApJ...527...80W

Query : 1999ApJ...527...80W

1999ApJ...527...80W - Astrophys. J., 527, 80-85 (1999/December-2)

Temperature map of the Coma cluster of galaxies.

WATANABE M., YAMASHITA K., FURUZAWA A., KUNIEDA H., TAWARA Y. and HONDA H.

Abstract (from CDS):

We present a temperature map of the Coma Cluster of galaxies with an angular resolution of 8' corresponding to 320 kpc (H0=50 km.s–1.Mpc–1) and an angular extent of 1°.5. The temperature was derived from the hardness ratio of two energy bands, 0.5-3 and 3-10 keV. The X-ray image in the 0.5-10 keV band was also deconvolved from the observed data with the angular resolution of 2'. We have refined the complex response function of the ASCA telescope, taking into account the off-axis angle and the energy of incident X-rays in this analysis. The temperature map indicates that a hot region (kT=11-14 keV) is largely extended to the northwest 15'-40' off from the cluster center, while a cool region (kT∼5 keV) is 20' off to the southeast. Another cool region is identified with the subcluster associated with the cD galaxy NGC 4839. These observational features can be interpreted in the context of the subcluster-cluster merging.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: individual (Coma) - X-Rays: Galaxies

Simbad objects: 15

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Number of rows : 15
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 3391 ClG 06 26 15.4 -53 40 52           ~ 222 1
3 ACO 754 ClG 09 09 14.8 -09 40 35           ~ 695 1
4 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 6022 1
5 NGC 4839 BiC 12 57 24.3563164776 +27 29 52.203087132 13.56 13.02 12.06     ~ 482 3
6 NGC 4874 LIN 12 59 35.7093764280 +27 57 33.293892204 13.01 13.7 12.71 12.27 11.386 ~ 814 3
7 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
8 NGC 4889 EmG 13 00 08.097 +27 58 37.29 12.93 13.0 11.30 11.652 10.906 ~ 742 1
9 NGC 4911 LIN 13 00 56.0616749160 +27 47 27.152821212 14.58 13.7 13.33 12.601 12.068 ~ 218 1
10 ACO 2065 ClG 15 22 22.7 +27 44 20           ~ 398 0
11 ACO 2256 ClG 17 03 37.5 +78 37 23           ~ 928 1
12 ACO 2319 ClG 19 21 14.0 +43 56 57           ~ 495 1
13 MCG+07-41-003 Bla 19 59 28.35656837 +40 44 02.0972325   16.22 15.10     ~ 2537 2
14 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 676 1
15 ACO 2657 ClG 23 44 51.0 +09 08 40           ~ 280 3

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