A VLA snapshot continuum survey of the first quadrant of the Galactic plane at 1.5 GHz

Details A VLA snapshot continuum survey of the first quadrant of the Galactic plane at 1.5 GHz A VLA snapshot continuum survey of the first quadrant of the Galactic plane at 1.5 GHz

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....96.1655g&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 96, Nov. 1988, p. 1655-1670. Research supported by the Alfred P. Sloan Foundation an

Astronomy and Astrophysics

Astronomy

22

Extragalactic Radio Sources, Milky Way Galaxy, Radio Emission, Very Large Array (Vla), Absorption Spectra, Flux Density, H I Regions, H Ii Regions

Scientific paper

The authors present results from a continuum VLA snapshot survey of the galactic plane in the longitude range 0° ≤ l ≤ 90° at 1.5 GHz. Observations were taken every 0.5° in longitude at b = 0°. Most fields are complete to about 30 mJy peak flux density. The positions, peak, and total flux density of 471 compact sources (<30arcsec) have been measured. A complete sample of 329 sources is defined. An excess of sources above that expected from extragalactic source counts is seen for l < 40° at all flux-density intervals. The authors find 86 compact sources that are within 2.4 arcmin of a source in the recent radio recombination-line survey of Lockman (1988). Source counts excluding these 86 sources agree with extragalactic source counts for all flux-density and longitude intervals. There may only be a small number of galactic objects present in this survey that remain unidentified as such.

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