Powerful Radio Sources in the Southern Sky. IV. Observations of the G4Jy-3CRE Catalog with the Australian Square Kilometre Array Pathfinder
Abstract
A recent 2023 paper by Massaro et al. introduced the G4Jy-3CRE, a new catalog of the brightest radio sources in the Southern Hemisphere that serve as a southern equivalent to the Third Cambridge Catalog Revised (3CR). The G4Jy-3CRE catalog selected 264 sources from the GLEAM-4Jy survey based on the same criteria used to select the sources in the 3CR. In this paper, we present new Australian Square Kilometre Array Pathfinder (ASKAP) continuum imaging of the G4Jy-3CRE catalog. We use the three most recent data releases from the Rapid ASKAP Continuum Survey (RACS), covering the sky south of +30° decl.: RACS-low1, RACS-mid, and RACS-high. Together, these data releases cover a range of frequencies from 600 to 1800 MHz. The RACS surveys have improved spatial resolution and sensitivity over archival surveys at the same frequency, enabling us to classify 173 sources (66% of the sample) with morphologies indicative of the presence of jets, 37 of which did not show jet activity on archival radio maps. We were able to effectively classify FRI/FRII galaxies up to a redshift of z = 1.35. Moreover, we identified six optical counterparts for sources that were either previously unidentified or unconfirmed.
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BibTeX
@article{gawenda2026powerful,
title = {{Powerful Radio Sources in the Southern Sky. IV. Observations of the G4Jy-3CRE Catalog with the Australian Square Kilometre Array Pathfinder}},
author = {Siegfried Gawenda and Juan Madrid and Francesco Massaro and Sarah White and C. Cheung and Chiara Mazzucchelli and Abigail García-Pérez and I. Andruchow and Vahram Chavushyan and Ralph Kraft and Victoria Reynaldi and Ana Jimenez-Gallardo and Alessandro Capetti and Barbara Balmaverde and William Forman and H. Peña-Herazo and Nicole Nesvadba and Sergio Cellone and Romana Grossová and Alessandro Paggi and Eleonora Sani and C. Leto},
journal = {The Astrophysical Journal Supplement Series},
year = {2026},
month = may,
doi = {10.3847/1538-4365/ae633e},
eprint = {2605.21840},
archivePrefix = {arXiv},
url = {https://hal.science/hal-05842702v1},
note = {CC BY},
}
RIS
TY - JOUR
TI - Powerful Radio Sources in the Southern Sky. IV. Observations of the G4Jy-3CRE Catalog with the Australian Square Kilometre Array Pathfinder
AU - Siegfried Gawenda
AU - Juan Madrid
AU - Francesco Massaro
AU - Sarah White
AU - C. Cheung
AU - Chiara Mazzucchelli
AU - Abigail García-Pérez
AU - I. Andruchow
AU - Vahram Chavushyan
AU - Ralph Kraft
AU - Victoria Reynaldi
AU - Ana Jimenez-Gallardo
AU - Alessandro Capetti
AU - Barbara Balmaverde
AU - William Forman
AU - H. Peña-Herazo
AU - Nicole Nesvadba
AU - Sergio Cellone
AU - Romana Grossová
AU - Alessandro Paggi
AU - Eleonora Sani
AU - C. Leto
PY - 2026
DA - 2026/05/28
JO - The Astrophysical Journal Supplement Series
DO - 10.3847/1538-4365/ae633e
UR - https://hal.science/hal-05842702v1
AB - A recent 2023 paper by Massaro et al. introduced the G4Jy-3CRE, a new catalog of the brightest radio sources in the Southern Hemisphere that serve as a southern equivalent to the Third Cambridge Catalog Revised (3CR). The G4Jy-3CRE catalog selected 264 sources from the GLEAM-4Jy survey based on the same criteria used to select the sources in the 3CR. In this paper, we present new Australian Square Kilometre Array Pathfinder (ASKAP) continuum imaging of the G4Jy-3CRE catalog. We use the three most recent data releases from the Rapid ASKAP Continuum Survey (RACS), covering the sky south of +30° decl.: RACS-low1, RACS-mid, and RACS-high. Together, these data releases cover a range of frequencies from 600 to 1800 MHz. The RACS surveys have improved spatial resolution and sensitivity over archival surveys at the same frequency, enabling us to classify 173 sources (66% of the sample) with morphologies indicative of the presence of jets, 37 of which did not show jet activity on archival radio maps. We were able to effectively classify FRI/FRII galaxies up to a redshift of z = 1.35. Moreover, we identified six optical counterparts for sources that were either previously unidentified or unconfirmed.
ER -