A 2.3 GHz radio continuum map of the upper Scorpio region

Details A 2.3 GHz radio continuum map of the upper Scorpio region A 2.3 GHz radio continuum map of the upper Scorpio region

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....92..156b&link_type=abstract

Astronomy and Astrophysics, vol. 92, no. 1-2, Dec. 1980, p. 156-162. Research supported by Rhodes University and South African

Astronomy and Astrophysics

Astronomy

23

Astronomical Maps, Nebulae, Radio Sources (Astronomy), Astronomical Catalogs, Astronomical Coordinates, B Stars, H Ii Regions, Lyman Spectra, Microwave Emission

Scientific paper

An area between Dec. -15 and -35 deg and R. A. 15h and 43m and 16h 40m was observed at a wavelength of 13 cm with a resolution of 20 arcmin and a sensitivity better than 30 mK. A large region of emission (12 x 10 deg) has been found enclosing most of the stars of the Sco OB2 association. Smaller radio emission features are found to correlate with H-alpha features excited by early B type stars. The strongest source observed coincides with the H II region Sharpless 9. Emission also occurs near areas of high obscuration which contain early B type stars. An estimate of the Lyman continuum photon flux responsible for the radio emission from the three identifiable thermal sources does not agree with recent theoretical predictional of the photon flux from B stars.

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