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    • Accurate galactic N(H) values towards quasars and AGN 

      Elvis, Martin; Wilkes, Belinda Jane; Lockman, Felix J. (IOP Publishing, 1989)
      Integrated Galactic 21-cm column densities toward about 174 quasars and AGN are presented. The data are corrected for stray radiation, using the technique of Lockman et al. (1986). Because of the 21-arcmin beam size of the ...