Implications of the Environments of Radio-detected Active Galactic Nuclei in a Complex Protostructure at z ? 3.3

Radio Active Galactic Nuclei (RAGNs) are mainly found in dense structures (i.e., clusters/groups) at redshifts of z$<$2 and commonly used to detect protoclusters higher redshift. Here, we attempt study the host environmental properties two relatively faint ($\mathrm L_\mathrm{1.4GHz} \sim10^{25}$ W Hz$^{-1}$) RAGNs a known protocluster z=3.3 PCl J0227-0421 field, detected using latest radio observation obtained as part Observations Redshift Evolution Large-Scale Environments (ORELSE) Survey. Using new spectroscopic observations from Keck/MOSFIRE Charting Cluster Construction with VIMOS Ultra-Deep Survey (VUDS) ORELSE (C3VO) survey previous data VIMOS-VLT Deep (VVDS) VUDS, revise three-dimensional overdensity field around this protocluster. The is embedded large scale protostructure. This protostructure has an estimated total mass $\sim$2.6$\times10^{15} M_\odot$ contains several peaks. Both hosted by very bright massive galaxies, while their hosts show extreme differences color, indicating that they have different ages evolutionary stages. Furthermore, find not most locally parts protostructure, but fairly close centers parent We propose scenario where merging might already happened both cases, which lowered local density surrounding area boosted stellar mass. work first time low luminosity been studied within high redshift