SIMBAD references

2019MNRAS.485.4550K - Mon. Not. R. Astron. Soc., 485, 4550-4558 (2019/June-1)

A pre-merger stage galaxy cluster: Abell 3733.


Abstract (from CDS):

The galaxy cluster Abell 3733 (A3733) is a very suitable candidate in addressing dynamical processes throughout galaxy cluster mergers. This study shows structural analysis results of A3733 (z = 0.038) based on X-ray and optical data. According to X-ray luminosity map, A3733 hosts two sub-structures separated in the sky by 0.25 Mpc, and the two distinct clumps are located in the East (A3733E) and the West (A3733W) directions. Both sub-structures are centred on two different brightest cluster galaxies (BCGs), and the X-ray and optical centroids of both BCGs substantially coincide with each other. The intracluster medium (ICM) temperatures of the sub-structures are estimated to be 2.79 keV for A3733E and 3.28 keV for A3733W. Both sub-structures are found to be hosting cool central gas (kT ∼ 1.5-2.5 keV) surrounded by hotter gas (kT ∼ 3.0-3.5 keV). Besides, the X-ray concentration parameters are found to be c ∼ 0.3 for each sub-structure. These results indicate the existence of cool centres for both sub-structures. The optical density map reveals a crowded galaxy population within the vicinity of A3733W. The high probable (per cent 88.2) dynamical binding model of A3733 suggests that the cores of sub-structures have a 3D separation of 0.27 Mpc and will collide in 0.14 Gyr with the relative in-falling velocity of 1936 km s–1. As a conclusion, this study demonstrates some evidence suggesting that the A3733 system is in the pre-merger state.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: individual: Abell 3733 - galaxies: clusters: intracluster medium - X-rays: galaxies: clusters

Status at CDS : Examining the need for a new acronym.

Simbad objects: 3

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2019MNRAS.485.4550K and select 'bookmark this link' or equivalent in the popup menu


© Université de Strasbourg/CNRS

    • Contact