2014A&A...570A.117G


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.10CEST12:58:23

2014A&A...570A.117G - Astronomy and Astrophysics, volume 570A, 117-117 (2014/10-1)

Metal distribution in sloshing galaxy clusters: the case of A 496.

GHIZZARDI S., DE GRANDI S. and MOLENDI S.

Abstract (from CDS):

We report results from a detailed study of the sloshing gas in the core of A496. We detected the low-temperature/entropy spiral feature found in several cores. We also found that conduction between the gas in the spiral and the ambient medium must be suppressed by more than one order of magnitude compared with the Spitzer conductivity. Intriguingly, while the gas in the spiral pattern features a higher metal abundance than the surrounding medium, it follows the relation of entropy vs metal abundance defined by gas outside the spiral. The most plausible explanation for this behavior is that the low-entropy metal-rich plasma that is lifted up through the cluster atmosphere by sloshing suffers little heating or mixing with the ambient medium. While sloshing appears to be capable of lifting up significant amount of gas, the limited heat exchange and mixing between gas within and outside the spiral implies that this mechanism is not at all effective in 1) permanently redistributing metals within the core region and 2) heating up the coolest and densest gas, thereby providing little or no contribution to the staving off of catastrophic cooling in cool cores.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: intracluster medium - X-rays: galaxies: clusters - galaxies: clusters: individual: A496

CDS comments: Regions E, S1 to S3, #2 and #71 not in SIMBAD.

Simbad objects: 16

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Number of rows : 16

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 IC 1860 BiC 02 49 33.878 -31 11 21.94   13.00   11.47   ~ 60 0
2 ACO 426 ClG 03 19 47.2 +41 30 47           ~ 1948 1
3 ACO 496 ClG 04 33 30.3838 -13 14 21.584           ~ 661 2
4 ACO 1201 ClG 11 12 54.4 +13 26 08           ~ 89 1
5 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6233 3
6 ACO 3526 ClG 12 48 51.8 -41 18 21           ~ 973 2
7 NGC 5044 BiC 13 15 23.969 -16 23 08.00   11.9   10.74   ~ 452 0
8 NGC 5098 BiC 13 20 14.728 +33 08 36.25   15.0       ~ 95 2
9 ACO 3581 ClG 14 07 29.8 -27 01 04           ~ 165 3
10 NGC 5846 BiC 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 773 1
11 ACO 2052 ClG 15 16 45.5 +07 00 01           ~ 676 1
12 ACO 2142 ClG 15 58 20.00 +27 14 00.3           ~ 674 0
13 ACO 2204 ClG 16 32 45.7 +05 34 43           ~ 398 0
14 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 567 1
15 NAME 3C 449 Cluster ClG 22 32 +39.4           ~ 6 0
16 NAME NGC 7619 Group GrG 23 20 32.1 +08 22 26           ~ 44 0

    Equat.    Gal    SGal    Ecl

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2020.08.10-12:58:23

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