Radio Sources in the Vicinity of Source M 31

Radio Sources in the Vicinity of Source M 31

The region α (right ascension) equal to 23$^{h}$ 50$^{m}$ to 01$^{h}$ 30$^{m}$, δ (declination) 39° 20′ to 40 degrees 40′ has been observed at 195 and 430 megahertz with the 1000-foot (300 m) telescope of the Arecibo Ionospheric Observatory. Eighteen sources from the Ohio Catalogue and source 3C 13...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) Vol. 158; no. 3804; pp. 1043 - 1045
Main Author: Varsavsky, Carlos M.
Format: Journal Article
Language:English
Published: United States American Association for the Advancement of Science 24-11-1967
Subjects:
Astronomical surveys
Ionospherics
Nebulae
Radio
Radio sources
Right ascension
Spectral index
Telescopes
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Summary:The region α (right ascension) equal to 23$^{h}$ 50$^{m}$ to 01$^{h}$ 30$^{m}$, δ (declination) 39° 20′ to 40 degrees 40′ has been observed at 195 and 430 megahertz with the 1000-foot (300 m) telescope of the Arecibo Ionospheric Observatory. Eighteen sources from the Ohio Catalogue and source 3C 13 are contained in this region. We conclude that the sources have straight-line spectra with indices between -0.4 and -0.9 and that they are probably not associated with M 31, except those within the optical limit of the nebula.
Bibliography:ObjectType-Article-1
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ISSN:0036-8075
1095-9203
DOI:10.1126/science.158.3804.1043