A 1420 MHz Catalog of Compact Sources in the Northern Galactic Plane
- Inter-University Institute for Data Intensive Astronomy, and Department of Astronomy, University of Cape Town Department of Physics, University of the Western Cape (South Africa)
- Department of Physics and Astronomy, University of Calgary (Canada)
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing Shi (China)
- Dominion Radio Astrophysical Observatory, Herzberg Programs in Astronomy and Astrophysics National Research Council of Canada (Canada)
We present a catalog of compact sources of radio emission at 1420 MHz in the northern Galactic plane from the Canadian Galactic Plane Survey. The catalog contains 72,758 compact sources with an angular size less than 3′ within the Galactic longitude range 52° < ℓ < 192° down to a 5 σ detection level of ∼1.2 mJy. Linear polarization properties are included for 12,368 sources with signals greater than 4 σ{sub QU} in the Canadian Galactic Plane Survey (CGPS) Stokes Q and U images at the position of the total intensity peak. We compare CGPS flux densities with cataloged flux densities in the Northern VLA Sky Survey catalog for 10,897 isolated unresolved sources with CGPS flux density greater than 4 mJy to search for sources that show variable flux density on timescales of several years. We identify 146 candidate variables that exhibit high fractional variations between the two surveys. In addition, we identify 13 candidate transient sources that have CGPS flux density above 10 mJy but are not detected in the Northern VLA Sky Survey.
- OSTI ID:
- 22663794
- Journal Information:
- Astronomical Journal (Online), Vol. 153, Issue 3; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1538-3881
- Country of Publication:
- United States
- Language:
- English
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