ATPMN: accurate positions and flux densities at 5 and 8 GHz for 8,385 sources from the PMN survey

TL;DR

This paper presents a high-resolution radio source catalogue with flux densities and structural data at 4.8 and 8.6 GHz for over 9,000 sources from the PMN survey, including associations with gamma-ray sources.

Contribution

It provides the first high-resolution measurements for a large subset of PMN sources, enhancing positional accuracy and flux density data for radio sources in the southern sky.

Findings

Identified 127 sources associated with Fermi gamma-ray sources.

Provided detailed flux densities and structural measurements at 4.8 and 8.6 GHz.

Compared the catalog with other surveys to analyze source populations.

Abstract

We present a source catalogue of 9,040 radio sources resulting from high-resolution observations of 8,385 PMN sources with the Australia Telescope Compact Array. The catalogue lists flux density and structural measurements at 4.8 and 8.6 GHz, derived from observations of all PMN sources in the declination range -87 deg < delta < -38.5 deg (exclusive of galactic latitudes |b| < 2 deg) with flux density S4850 > 70 mJy (50 mJy south of delta = -73 deg). We assess the quality of the data, which was gathered in 1992-1994, describe the population of catalogued sources, and compare it to samples from complementary catalogues. In particular we find 127 radio sources with probable association with gamma-ray sources observed by the orbiting Fermi Large Area Telescope.