2002A&A...396...65B


C.D.S. - SIMBAD4 rel 1.7 - 2020.12.02CET12:21:12

2002A&A...396...65B - Astronomy and Astrophysics, volume 396, 65-72 (2002/12-2)

Abell 3560, a galaxy cluster at the edge of a major merging event.

BARDELLI S., VENTURI T., ZUCCA E., DE GRANDI S., ETTORI S. and MOLENDI S.

Abstract (from CDS):

In this paper we study A3560, a rich cluster at the southern periphery of the A3558 complex, a chain of interacting clusters in the central part of the Shapley Concentration supercluster. From a ROSAT-PSPC map we find that the X-ray surface brightness distribution of A3560 is well described by two components, an elliptical King law and a more peaked and fainter structure, which has been modeled with a Gaussian. The main component, corresponding to the cluster, is elongated with the major axis pointing toward the A3558 complex. The second component, centered on the Dumb-bell galaxy which dominates the cluster, appears significantly offset (by ∼0.15h–1Mpc) from the cluster X-ray centroid. From a Beppo-SAX observation we derive the radial temperature profile, finding that the temperature is constant (at kT ∼3.7 keV) up to 8 arcmin, corresponding to 0.3h–1Mpc: for larger distances, the temperature significantly drops to kT∼1.7keV. We analyze also temperature maps, dividing the cluster into 4 sectors and deriving the temperature profiles in each sector: we find that the temperature drop is more sudden in the sectors which point towards the A3558 complex. From VLA radio data, at 20 and 6 cm, we find a peculiar bright extended radio source (J1332-3308), composed of a core (centered on the northern component of the Dumb-bell galaxy), two lobes, a ``filament" and a diffuse component. The morphology of the source could be interpreted either by a strong interaction of the radio source with the intracluster medium or by the model of intermittency of the central engine.

Abstract Copyright:

Journal keyword(s): X-rays: galaxies: clusters - galaxies: clusters: general - galaxies: clusters: individual: A3560

CDS comments: The 2 components of the Dumb-bell galaxy are WMMA 32 and WMMA 33.

Simbad objects: 13

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Number of rows : 13

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 RE J0131-053 X 01 32 -05.3           ~ 1 0
2 NAME SHAPLEY-CENTAURUS CL SCG 13 06.0 -33 04           ~ 514 0
3 ACO 3556 ClG 13 24 06.2 -31 39 38           ~ 140 0
4 [BZM96] 8 ClG 13 29 47 -31 36.5           ~ 59 1
5 ACO 3559 ClG 13 29 53.9 -29 31 29           ~ 67 0
6 BAX 202.9000-31.8128 ClG 13 31 36 -31 48.8           ~ 69 1
7 NGC 5193 BiC 13 31 53.5250724472 -33 14 03.581095928   12.69 11.92 11.31   ~ 98 0
8 LEDA 47626 PaG 13 32 23.60 -33 08 21.4           ~ 21 1
9 ACO 3560 ClG 13 32 23.7 -33 08 21           ~ 123 1
10 2MASX J13322533-3308164 BiC 13 32 25.35 -33 08 16.7           ~ 8 1
11 2MASX J13322574-3308100 GiP 13 32 25.748 -33 08 10.06   15.2       ~ 11 1
12 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 285 1
13 NAME ACO 3558 Complex SCG ~ ~           ~ 10 1

    Equat.    Gal    SGal    Ecl

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2020.12.02-12:21:12

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