Reports

Neutral Hydrogen Survey of Andromeda Galaxy

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Science  22 Jul 1966:
Vol. 153, Issue 3734, pp. 411-414
DOI: 10.1126/science.153.3734.411

Abstract

A neutral hydrogen survey of the Andromeda galaxy (M31) has been conducted with the 260-foot (80m) Ohio State University radio telescope. The neutral hydrogen is concentrated in the spiral arm regions, with but relatively small amounts near the center of the galaxy. Similar deficiencies have been found near the center of M33 and our galaxy, suggesting similar evolutionary processes in the three galaxies.

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