2000MNRAS.313...21F

Query : 2000MNRAS.313...21F

2000MNRAS.313...21F - Mon. Not. R. Astron. Soc., 313, 21-31 (2000/March-3)

Statistical properties of metal abundances of the intracluster medium in the central region of clusters.

FUKAZAWA Y., MAKISHIMA K., TAMURA T., NAKAZAWA K., EZAWA H., IKEBE Y., KIKUCHI K. and OHASHI T.

Abstract (from CDS):

We measured metal abundances of the intracluster medium in the central regions of 34 nearby clusters of galaxies, using ASCA data. Clusters that have a sharp X-ray emission centred on a cD galaxy are commonly found to exhibit a central increment in the Fe abundance, which is more pronounced in lower temperature clusters; +(0.1-0.2) solar at kT>5keV, compared with +(0.2-0.3) solar at 1.5<kT<4keV. These central excess metals are thought to be ejected from cD galaxies. Several low-temperature cD type clusters also show significant Si abundance increase by +(0.1-0.2) solar at the central region. Compared with the Si-rich abundances observed in the outer regions of rich clusters, the Si to Fe abundance ratio of central excess metals tends to be near the solar ratio, implying that type Ia products from cD galaxies are dominant for the central excess metals. On the other hand, some other clusters do not show the central Fe abundance increase. As these clusters tend to contain two or three central giant galaxies, it is suggested that galaxy interactions have removed the central abundance increase.

Abstract Copyright: 2000, Royal Astronomical Society

Journal keyword(s): galaxies: abundances - galaxies: clusters: general - galaxies: elliptical and lenticular, cD - X-rays: galaxies

Simbad objects: 35

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Number of rows : 35
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 ZwCl 0120+3300 ClG 01 23 36.9 +33 15 03           ~ 80 0
4 NGC 507 rG 01 23 39.950 +33 15 22.22   13.0       ~ 459 1
5 ACO 262 ClG 01 52 50.4 +36 08 46           ~ 727 1
6 2A 0251+413 ClG 02 54 26.6 +41 33 25           ~ 328 1
7 ACO 400 ClG 02 57 37.4 +06 00 45           ~ 408 3
8 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
9 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
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 496 ClG 04 33 40.8 -13 14 34           ~ 728 2
13 ACO 539 ClG 05 16 35.1 +06 27 14           ~ 255 2
14 ACO 780 ClG 09 18 30 -12 15.7           ~ 469 0
15 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 905 1
16 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1127 1
17 NAME NGC 4073 Group GrG 12 04 44.08 +01 48 40.9     13.53     ~ 292 0
18 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
19 ACO 3526 ClG 12 48 49.2 -41 18 17           ~ 1154 2
20 HCG 62 CGG 12 53 05.6 -09 12 21           ~ 313 0
21 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
22 NAME NGC 5044 Group GrG 13 14 22.7 -16 32 04           ~ 186 0
23 NGC 5044 BiC 13 15 23.9607836592 -16 23 07.547751744   11.9   10.74   ~ 531 0
24 ACO 3558 ClG 13 28 03.2 -31 31 35           ~ 476 2
25 ACO 3571 ClG 13 47 32.4 -32 50 12           ~ 308 2
26 ACO 1795 ClG 13 48 47.4 +26 34 55           ~ 1330 0
27 ACT-CL J1521.8+0742 ClG 15 21 48.8 +07 43 41     15.13     ~ 326 0
28 ACO 2063 ClG 15 23 01.8 +08 38 22           ~ 414 2
29 ACO 2147 ClG 16 02 11.96 +15 55 11.5           ~ 416 0
30 AWM 4 ClG 16 04 52.01 +23 56 26.9     14.38     ~ 141 0
31 ACO 2199 ClG 16 28 34.5 +39 32 26           ~ 1206 1
32 ACO 2256 ClG 17 03 37.5 +78 37 23           ~ 928 1
33 ACO 2319 ClG 19 21 14.0 +43 56 57           ~ 495 1
34 ACO 2634 ClG 23 38 18.4 +27 01 37           ~ 515 2
35 ACO 4059 ClG 23 57 02.2 -34 45 58           ~ 400 1

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