The interstellar clouds of Adams and Blaauw revisited: an HI absorption study - I
Jayadev Rajagopal, G. Srinivasan, K. S. Dwarakanath
Abstract
This investigation is aimed at clarifying the nature of the interstellar gas seen in absorption against bright O and B stars. Towards this end we have obtained for the first time HI absorption spectra towards radio sources very close to the lines of sight towards 25 bright stars previously studied. In this paper we describe the selection criteria, the details regarding our observations, and finally present the absorption spectra. In the accompanying paper we analyse the results and draw conclusions.
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