Size Measurements and Characterization of the Astrophysical Properties of Multiple-component Radio Active Galactic Nuclei in the ROGUE I Catalog

Abstract We present hand-curated size measurements for a sample of 2002 multiple-component radio active galactic nuclei (AGNs) in the Radio sources associated with Optical Galaxies and having Unresolved or Extended morphologies I (ROGUE I) catalog. The sources span total angular sizes of ∼5″–1100″, which translates to projected linear sizes of ∼10 kpc to ∼2 Mpc across 0.01 ≤ z ≤ 0.54. About 10% of the objects in the sample are compact (≤60 kpc), while ∼3% are giant radio sources (≥700 kpc). Roughly 34% are associated with galaxy clusters, and 16% exhibit an arm-length asymmetry ratio ≥2. The cluster association fractions are comparable across Fanaroff–Riley (FR) type I, II, and I/II morphological classes. Arm-length asymmetries occur at similar rates in FR I and I/II classes but are about a factor of 2–4 less common in FR II, supporting the view that their jets are more stable and collimated, and thus less prone to disruption in dense cluster environments. In contrast, bent-angle sources (wide-angle tails and narrow-angle tails) show arm-length asymmetries about a factor of 2–4 less frequently than cluster-associated sources, suggesting that asymmetries are smoothed out by the local intracluster medium conditions. The mean galaxy number densities of FR I, II, I/II, wide-angle, narrow-angle, and head–tail sources are comparable, supporting the dominant role of local intracluster medium conditions in shaping bent morphologies. Radio power–linear size tracks for FR IIs show that the population is dominated by AGNs with jet kinetic powers ≤10 38 erg s −1 and comprising both young (≤10 Myr) and old (∼100 Myr) AGNs. We also compare z , angular/linear sizes, core/total radio luminosities, optical magnitudes, black hole, and stellar masses across the morphological classes.