Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jrasc..83..105h&link_type=abstract
Journal of the Royal Astronomical Society of Canada (ISSN 0035-872X), vol. 83, April 1989, p. 105-115.
Astronomy and Astrophysics
Astronomy
13
Radio Astronomy, Radio Telescopes, Sky Surveys (Astronomy), Synthetic Arrays, Continuous Spectra, Parabolic Antennas, Radio Sources (Astronomy), Synthetic Apertures
Scientific paper
The DRAO staff have started a systematic survey of radio emission from the northern galactic plane using the Observatory's synthesis telescope, both in the radio continuum at 408 MHz and 1420 MHz, and in the 21-cm line of atomic hydrogen. The line and continuum emission at 1420 MHz will be sampled at 24 positions along the galactic plane between longitudes 65 deg and 180 deg, while the 408-MHz emission will be completely mapped over this longitude interval in a 6-deg-wide strip. The survey should provide images in which weak extended emission features are visible down to emission measures approaching 100/cm exp 6 pc, and yield a catalog of about 8000 compact sources. The latter should be complete to a level of about 160 mJy at 408 MHz. The 21-cm data will be extremely useful for statistical (and other) studes of the structure of the interstellar medium.
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