Investigating the large-scale environment of wide-angle tailed radio galaxies in the local Universe
arXiv:2304.09192 · doi:10.1051/0004-6361/202245257
Abstract
We present a statistical analysis of the large-scale (up to 2 Mpc) environment of an homogeneous and complete sample, both in radio and optical selection, of wide-angle tailed radio galaxies (WATs) in the local Universe (i.e., with redshifts 0.15). The analysis is carried out using the parameters obtained from cosmological neighbors within 2 Mpc of the target source. Results on WATs large-scale environments are then compared with that of Fanaroff-Riley type I (FR Is) and type II (FR IIs) radio galaxies, listed in two others homogeneous and complete catalogs, and selected with the same criterion adopted for the WATs catalog. We obtain indication that at low redshift WATs inhabit environments with a larger number of galaxies than that of FR Is and FR IIs. In the explored redshift range, the physical size of the galaxy group/cluster in which WATs reside appears to be almost constant with respect to FR Is and FR IIs, being around 1 Mpc. From the distribution of the concentration parameter, defined as the ratio between the number of cosmological neighbors lying within 500 kpc and within 1 Mpc, we conclude that WATs tend to inhabit the central region of the group/cluster in which they reside, in agreement with the general paradigm that WATs are the cluster BCG.
arXiv comment8 pages, 5 figures, 1 table. Accepted for publication on A&A
References in corpus (24)
- The Sloan Digital Sky Survey: Technical Summary
- On the fundamental dichotomy in the local radio-AGN population: accretion, evolution, and host galaxy properties
- The 1% Concordance Hubble Constant
- Percolation Galaxy Groups and Clusters in the SDSS Redshift Survey: Identification, Catalogs, and the Multiplicity Function
- The origin of cold fronts in the cores of relaxed galaxy clusters
- A pilot study of the radio-emitting AGN population: the emerging new class of FR0 radio-galaxies
- Groups and clusters of galaxies in the SDSS DR8. Value-added catalogues
- Radio Galaxy Zoo: host galaxies and radio morphologies derived from visual inspection
- The environmental dependence of radio-loud AGN activity and star formation in the 2dFGRS
- FRII{\sl{CAT}}: A FIRST catalog of FR~II radio galaxies
- FR0CAT: a FIRST catalog of FR0 radio galaxies
- FRICAT: A FIRST catalog of FRI radio galaxies
- Galaxy Cluster Environments of Radio Sources
- X-ray-emitting Atmospheres of B2 Radio Galaxies
- The environments of radio-loud AGN from the LOFAR Two-Metre Sky Survey (LoTSS)
- The Environments of a Complete, Moderate-Redshift Sample of FIRST Bent-Double Radio Sources
- A wide angle tail radio galaxy in the COSMOS field: evidence for cluster formation
- Radio Galaxy Zoo: The Distortion of Radio Galaxies by Galaxy Clusters
- WATCAT: a tale of wide-angle tailed radio galaxies
- Making Faranoff-Riley I radio sources II. The effects of jet magnetization
- Deciphering the large-scale environment of radio galaxies in the local Universe: where do they born, grow and die?
- Tailed radio galaxies as tracers of galaxy clusters. Serendipitous discoveries with the GMRT
- A closer look at the deep radio sky: Multi-component radio sources at 3-GHz VLA-COSMOS
- The High-Redshift Clusters Occupied by Bent Radio AGN (COBRA) Survey: Radio Source Properties