A sharper view of the outer Galaxy at 1420 and 408 MHz from the Canadian Galactic Plane Survey II: The catalogue of extended radio sources

TL;DR

This paper presents a new catalogue of extended radio sources in the outer Galaxy based on high-resolution 1420 MHz and 408 MHz data from the Canadian Galactic Plane Survey, aiding studies of Galactic structure.

Contribution

The paper introduces a comprehensive catalogue of extended radio sources with flux measurements and cross-identifications, including many newly discovered sources, enhancing the resources for Galactic research.

Findings

Identification of numerous new radio sources.

Compilation of flux measurements at 1420 MHz and 408 MHz.

Extensive cross-referencing with other radio catalogues.

Abstract

A new catalogue of extended radio sources has been prepared based on arcminute-resolution 1420 MHz images from the Canadian Galactic Plane Survey (CGPS). The new catalogue provides both 1420 MHz and 408 MHz flux density measurements on sources found near the Galactic plane in the second quadrant of our Galaxy. In addition cross-identifications are made with other major radio catalogues and information is provided to facilitate the recovery of CGPS image data associated with each catalogued source. Numerous new radio sources are identified and the catalogue provides a comprehensive summary of both newly discovered and previously known HII regions and supernova remnants in the outer Galaxy. The catalogue should be of use both for synoptic studies of Galactic structure and for placing higher resolution observations, at radio and other wavelengths, in context.