2011MNRAS.413.2467J


Query : 2011MNRAS.413.2467J

2011MNRAS.413.2467J - Mon. Not. R. Astron. Soc., 413, 2467-2480 (2011/June-1)

Abundance profiles and cool cores in galaxy groups.

JOHNSON R., FINOGUENOV A., PONMAN T.J., RASMUSSEN J. and SANDERSON A.J.R.

Abstract (from CDS):

Using data from the two-dimensional XMM–Newton Group Survey (2dXGS), we have examined the abundance profile properties of both cool core (CC) and non-cool core (NCC) galaxy groups. The 10 NCC systems in our sample represent a population which to date has been poorly studied in the group regime. Fitting the abundance profiles as a linear function of log radius, we find steep abundance gradients in CC systems, with a slope of -0.54 ± 0.07. In contrast, NCC groups have profiles consistent with uniform metallicity. Many CC groups show a central abundance dip or plateau, and we find evidence for anticorrelation between the core abundance gradient and the 1.4-GHz radio power of the brightest group galaxy (BGG) in CC systems. This may indicate the effect of active galactic nuclei (AGN)-driven mixing within the central ∼ 0.1r500. It is not possible to discern whether such behaviour is present in the NCC groups, due to the small and diverse sample with the requisite radio data. The lack of strong abundance gradients in NCC groups, coupled with their lack of CC, and evidence for enhanced substructure lead us to favour merging as the mechanism for disrupting CCs, although we cannot rule out disruption by a major AGN outburst. Given the implied time-scales, the disruptive event must have occurred within the past few Gyr in most NCC groups. Galaxy counterparts of metal-rich damped Lyα absorbers – II. A solar-metallicity and dusty DLA at zabs= 2.58

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): galaxies: clusters: intracluster medium - galaxies: groups: general - X-rays: galaxies: clusters

Simbad objects: 30

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Number of rows : 30
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 NAME NGC 507 Group GrG 01 23.7 +33 15           ~ 79 0
2 NAME NGC 533 Group GrG 01 25 29.1 +01 48 17           ~ 57 0
3 ACO 194 ClG 01 26 01.3 -01 22 02           ~ 346 2
4 NAME NGC 741 Group GrG 01 56 22 +05 37.6     14.3     ~ 52 0
5 HCG 15 CGG 02 07 39.0 +02 08 18           ~ 73 0
6 ACO 426 ClG 03 19 47.2 +41 30 47           ~ 2170 1
7 NAME NGC 2300 Group GrG 07 32 22.84 +85 42 26.3           ~ 55 0
8 NAME NGC 2563 Group GrG 08 20 24.4 +21 05 46           ~ 39 0
9 ACO 780 ClG 09 18 30 -12 15.7           ~ 449 0
10 HCG 42 CGG 10 00 13.1 -19 38 24           ~ 98 0
11 NAME NGC 3411 Group GrG 10 50 26.9 -12 50 26           ~ 46 0
12 HCG 51 CGG 11 22 21.6 +24 19 41   14.9       ~ 82 0
13 NAME NGC 4073 Group GrG 12 04 21.7 +01 50 19     13.53     ~ 257 0
14 RASSCALS NRGb184 GrG 12 08 01.0 +25 15 13           ~ 8 0
15 NAME NGC 4168 Group GrG 12 12.0 +13 24           ~ 59 0
16 NAME NGC 4261 Group GrG 12 20 02.3 +05 20 24     12.9     ~ 40 0
17 NAME NGC 4325 Group GrG 12 23 18.2 +10 37 19           ~ 53 0
18 NAME NGC 4636 Group GrG 12 42 49.5 +02 41 08           ~ 558 0
19 HCG 62 CGG 12 53 05.6 -09 12 21           ~ 304 0
20 NAME NGC 5044 Group GrG 13 14 22.7 -16 32 04           ~ 177 0
21 NAME NGC 5098 Group GrG 13 20 15.4 +33 08 30           ~ 58 0
22 NAME NGC 5129 Group GrG 13 24 36.0 +13 55 40           ~ 37 0
23 NAME NGC 5171 Group GrG 13 29 22.3 +11 47 31     4.7     ~ 72 0
24 HCG 68 CGG 13 53 40.9 +40 19 07     12.4     ~ 112 0
25 NAME NGC 5846 Group GrG 15 05 47.0 +01 34 25           ~ 144 0
26 NAME Pavo Cluster ClG 20 18 14.2 -70 50 41           ~ 48 0
27 NAME UGC 12064 Group GrG 22 31 30.76 +39 21 03.5           ~ 11 0
28 NAME Stephan's Quintet CGG 22 35 57.5 +33 57 36           ~ 415 1
29 NAME IC 1459 Group GrG 22 57 16 -36 25.4           ~ 34 0
30 HCG 97 CGG 23 47 24.0 -02 19 08           ~ 97 0

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2023.06.01-21:58:48

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