2017A&A...597A..15D


C.D.S. - SIMBAD4 rel 1.7 - 2020.05.26CEST21:50:19

2017A&A...597A..15D - Astronomy and Astrophysics, volume 597A, 15-15 (2017/1-1)

Tracing low-mass galaxy clusters using radio relics: the discovery of Abell 3527-bis.

DE GASPERIN F., INTEMA H.T., RIDL J., SALVATO M., VAN WEEREN R., BONAFEDE A., GREINER J., CASSANO R. and BRUGGEN M.

Abstract (from CDS):

Context. Galaxy clusters undergo mergers that can generate extended radio sources called radio relics. Radio relics are the consequence of merger-induced shocks that propagate in the intra cluster medium (ICM).
Aims. In this paper we analyse the radio, optical and X-ray data from a candidate galaxy cluster that has been selected from the radio emission coming from a candidate radio relic detected in NRAO VLA Sky Survey (NVSS). Our aim is to clarify the nature of this source and prove that under certain conditions radio emission from radio relics can be used to trace relatively low-mass galaxy clusters.
Methods. We observed the candidate galaxy cluster with the Giant Meterwave Radio Telescope (GMRT) at three different frequencies. These datasets have been analysed together with archival data from ROSAT in the X-ray and with archival data from the Gamma-Ray Burst Optical/Near-Infrared Detector (GROND) telescope in four different optical bands.
Results. We confirm the presence of a 1Mpc long radio relic located in the outskirts of a previously unknown galaxy cluster. We confirm the presence of the galaxy cluster through dedicated optical observations and using archival X-ray data. Due to its proximity and similar redshift to a known Abell cluster, we named it Abell 3527-bis. The galaxy cluster is amongst the least massive clusters known to host a radio relic.
Conclusions. We showed that radio relics can be effectively used to trace a subset of relatively low-mass galaxy clusters that might have gone undetected in X-ray or Sunyaev-Zel'dovich (SZ) surveys. This technique might be used in future deep, low-frequency surveys such as those carried on by the Low Frequency Array (LOFAR), the Upgraded GMRT (uGMRT) and, ultimately, the Square Kilometre Array (SKA).

Abstract Copyright: © ESO, 2016

Journal keyword(s): galaxies: clusters: individual: Abell 3527-bis - large-scale structure of Universe - radio continuum: general

Nomenclature: NAME Abell 3527-bis N=1.

Simbad objects: 7

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Number of rows : 7

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 ACO 3365 ClG 05 48 12 -21 56.1           ~ 32 0
2 ACO 3376 ClG 06 01 42.1521 -39 59 06.227           ~ 267 0
3 ACO 3527 ClG 12 49 56 -36 45.3           ~ 6 0
4 NAME Abell 3527-bis ClG 12 50 30.900 -37 02 24.39           ~ 3 0
5 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825108   17.51 17.25     ~ 3698 1
6 ACO 2256 ClG 17 03 43.5 +78 43 03           ~ 829 1
7 NAME Sausage Cluster ClG 22 42 53.0 +53 01 05           ~ 154 0

    Equat.    Gal    SGal    Ecl

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2020.05.26-21:50:19

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