A high-latitude H I-cloud with optical emission

A high latitude H I cloud observed with a 100 m telescope is in detailed positional agreement with a faint, diffuse nebula visible on the red and the blue prints of the Palomar Observatory Sky Survey. Estimates of the extinction in the nebula from star counts indicate that the ratio of H I column de...

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Bibliographic Details
Published in:Astronomy and astrophysics (Berlin) 1983-04, Vol.120 (1), p.63-73
Main Authors: Goerigk, W, MEBOLD, U, Reif, K, KALBERLA, P M W, Velden, L
Format: Article
Language:English
Online Access:Get full text
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Summary:A high latitude H I cloud observed with a 100 m telescope is in detailed positional agreement with a faint, diffuse nebula visible on the red and the blue prints of the Palomar Observatory Sky Survey. Estimates of the extinction in the nebula from star counts indicate that the ratio of H I column density to extinction is a factor of 10 smaller than the standard value found from UV observations. The nature of the diffuse optical and 21-cm line emission nebula, presently called the 'Draco' nebula, cannot be fully clarified with the data thus far obtained.
ISSN:0004-6361