2025MNRAS.543.3684C


Query : 2025MNRAS.543.3684C

2025MNRAS.543.3684C - Mon. Not. R. Astron. Soc., 543, 3684-3697 (2025/November-2)

Distribution of metals and multitemperature gas in the cores of nearby galaxy groups.

CHATZIGIANNAKIS D., SIMIONESCU A. and MERNIER F.

Abstract (from CDS):

Previous studies of galaxy clusters have focused extensively on the effects of active galactic nuclei (AGNs) feedback on the chemical evolution of the intra-cluster medium (ICM). However, similar studies on the atmospheres of lower mass systems, such as galaxy groups and giant ellipticals, remain limited. In this work, we present a systematic analysis of the chemical and multitemperature structure of the intra-group medium (IGrM), using a subsample of nearby galaxy groups and ellipticals from the CHEERS catalogue. By comparing areas with and without AGN feedback related features, such as cavities or extended radio lobes, we find clear evidence of an excess of multiphase gas along the path of recent AGN feedback. However, its distribution exceeds the length of the radio lobes, since we recover a non-negligible amount of multiphase gas at larger radii. In contrast to the clear asymmetry in the thermal structure, we find no directional enhancement in the distribution of Fe, with little to no differences in the Fe abundances of the on- and off-lobe directions. Our analysis suggests that the metals in the IGrM of our targets are well-mixed and decoupled from the effects of recent AGN feedback, as indicated by radio lobes and cavities.

Abstract Copyright: © The Author(s) 2025. Published by Oxford University Press on behalf of Royal Astronomical Society.

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

Simbad objects: 9

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Number of rows : 9
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 NAME NGC 1550 Group ClG 04 19 37.93 +02 24 34.1           ~ 45 0
2 NAME NGC 4325 Group GrG 12 23 18.2 +10 37 19           ~ 55 0
3 NAME Vir B Cluster GrG 12 33 39.3 +10 10 57           ~ 143 0
4 NAME NGC 4636 Group GrG 12 42 49.5 +02 41 08           ~ 570 0
5 HCG 62 CGG 12 53 05.6 -09 12 21           ~ 313 0
6 NAME NGC 5044 Group GrG 13 14 22.7 -16 32 04           ~ 186 0
7 BAX 225.2969+01.7020 ClG 15 01 11.86 +01 41 53.2           ~ 48 0
8 NAME NGC 5846 Group GrG 15 05 47.0 +01 34 25           ~ 165 0
9 NAME LHB X 16 42.0 +02 19           ~ 414 0

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