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Attempts to Detect Neutral Hydrogen in Compact Objects

Published online by Cambridge University Press:  14 August 2015

William A. Dent
William A. Dent*
Affiliation:
University of Massachusetts, Amherst, Mass., U.S.A.∗

Abstract

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An attempt was made to detect the redshifted Hi line in absorption in the quasi-stellar sources 3C 273 and 1510 - 08 and in the N-galaxies 3C 120 and 3C 371. The Seyfert galaxies NGC 1068 and NGC 1275 were also searched for Hi in absorption as well as in emission. Although no lines were detected, it was possible to place upper limits on the column density of Hi in all these objects, as well as upper limits on the mass of Hi in the Seyfert galaxies observed.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 44: External Galaxies and Quasi-Stellar Objects , 1972 , pp. 259 - 263
Copyright
Copyright © Reidel 1972 

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