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Interstellar gas in the Gum NebulaA survey of the interstellar gas near the Gum Nebula by optical observation of 67 stars at Ca II, 42 stars at Na I, and 14 stars in the UV with the Copernicus satellite provided radial velocities and column densities for all resolved absorption components. Velocity dispersions for gas in the Gum Nebula are not significantly larger than in the general interstellar medium; the ionization structure is predominantly that of an H II region with moderately high ionization. Denser, more highly ionized clouds are concentrated toward the Gum Nebula; these clouds do not show the anomalously high ionization observed in the Vela remnant clouds.
Document ID
19810029610
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Wallerstein, G.
(Princeton Univ. Observatory NJ, United States)
Jenkins, E. B.
(Princeton University New Observatory, Princeton, N.J., United States)
Silk, J.
(Princeton Univ. Observatory NJ, United States)
Date Acquired
August 11, 2013
Publication Date
September 15, 1980
Publication Information
Publication: Astrophysical Journal
Subject Category
Astrophysics
Accession Number
81A14014
Funding Number(s)
CONTRACT_GRANT: NAS5-23576
CONTRACT_GRANT: NGR-05-003-578
Distribution Limits
Public
Copyright
Other

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