Radio Map of the Andromeda Galaxy

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Science  24 Jul 1964:
Vol. 145, Issue 3630, pp. 389-391
DOI: 10.1126/science.145.3630.389


The University of Illinois radio telescope has resolved the 610.5 Mcy/sec disk component of radio emission from the large galaxy M 31 into several discrete concentrations. In two cases, these correspond to the crossing of the optical major axis by spiral arms. A spur of emission extends southeast from the galaxy near the minor axis.