VizieR Online Data Catalog: The CGPS 1420 MHz catalog of compact sources (Taylor+, 2017)

The Canadian Galactic Plane Survey (CGPS) mapped the principal constituents of the interstellar medium (ISM) with high angular resolution, inspired by the view that understanding the ISM requires knowledge of all its constituents. The Synthesis Telescope at the Dominion Radio Astrophysical Observatory (the DRAO ST) provided arcminute-resolution images of the radio continuum and atomic-hydrogen line emission. The CGPS is presented in Taylor et al. 2003 (Cat. VI/128), where details are also given of companion surveys that imaged the molecular and dust constituents of the ISM.

The CGPS DRAO radio continuum observations provide images of Stokes I, Q, and U in four 7.5MHz sub-bands spanning 35MHz, centered on 1420MHz. The observations were carried out in three phases beginning in 1995 Apr and ending in 2009 Feb.

The CGPS DRAO image products are 5.12°*5.12° images mosaicked from overlapping Synthesis Telescope fields. The images are available through the Canadian Astronomy Data Centre (www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/en/cgps). The complete survey is comprised of 85 such mosaics. We constructed the radio source catalog from these images using an automated source finding algorithm, FINDSRC, developed as part of the DRAO export software package (Higgs et al. 1997ASPC..125...58H).

We present the Canadian Galactic Plane Survey (CGPS) 1420MHz compact source catalog covering 1464 square degrees and spanning a range of 140° of Galactic longitude between 52°<l<192°.

Our survey is comparable in resolution and sensitivity to the NRAO VLA Sky Survey (NVSS; Condon et al. 1998, Cat. VIII/65); the flux density scale and source positions of the CGPS at 1420MHz were tied to the NVSS. From the 72758 sources in the CGPS catalog we identified 52876 that have counterparts in the NVSS within 60'' of the CGPS position.

(3 data files).