English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Recent deep and wide radio surveys extend the studies for radio-excess activegalactic nuclei (radio-AGNs) to lower luminosities and higher redshifts,providing new insights into the abundance and physical origin of radio-AGNs.Here we focus on the cosmic evolution, physical properties and AGN-host galaxyconnections of radio-AGNs selected from a sample of ~ 500,000 galaxies at 0 < z< 4 in GOODS-N, GOODS-S, and COSMOS fields. Combining deep radio data withmulti-band, de-blended far-infrared (FIR) and sub-millimeter data, we identify1162 radio-AGNs through radio excess relative to the FIR-radio relation. Westudy the cosmic evolution of 1.4 GHz radio luminosity functions (RLFs) forstar-forming galaxies (SFGs) and radio-AGNs, which are well described by a pureluminosity evolution of $L_*\propto (1+z)^{-0.31z+3.41}$ and a pure densityevolution of $\Phi_*\propto (1+z)^{-0.80z+2.88}$, respectively. We derive theturnover luminosity above which the number density of radio-AGNs surpasses thatof SFGs. This crossover luminosity increases as increasing redshift, from$10^{22.9}$ W Hz$^{-1}$ at z ~ 0 to $10^{25.2}$ W Hz$^{-1}$ at z ~ 4. At fullredshift range (0 < z < 4), we further derive the probability ($p_{radio}$) ofSFGs and quiescent galaxies (QGs) hosting a radio-AGN as a function of stellarmass ($M_*$), radio luminosity ($L_R$), and redshift (z), which yields$p_{radio}\propto (1+z)^{3.54}M_*^{1.02}L_R^{-0.90}$ for SFGs, and$p_{radio}\propto (1+z)^{2.38}M_*^{1.39}L_R^{-0.60}$ for QGs, respectively. Itindicates that radio-AGNs in QGs prefer to reside in more massive galaxies withlarger $L_R$ than those in SFGs, and radio-AGN fraction increases towardshigher redshift in both SFGs and QGs with a more rapid increase in SFGs.Further, we find that the radio-AGN fraction depends on accretion states of BHsand redshift in SFGs, while in QGs it also depends on BH (or galaxy) mass.

Cosmic evolution of radio-excess AGNs in quiescent and star-forming galaxies across $0 < z < 4$