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The size and shape of Gum's nebulaThe ionizing light of the supernova which produced the Gum nebula is now fossilized in the still live, though failing, H II region. The main body of the nebula suggests a hollow center or shell form, with a characteristic radius of about half the distance to the outlying fragments. The edges of the main body patches are typically sharp and often bright. The structure of the Gum nebula appears to be dependent on the event of ionization and possibly on the details of heating. It is not now an unstructured ambient medium, as it may have been before the recent ionization. Several hypotheses are presented for a structured ambient medium.
Document ID
19720004104
Document Type
Conference Paper
Authors
Johnson, H. M. (Lockheed Missiles and Space Co. Palo Alto, CA, United States)
Date Acquired
August 6, 2013
Publication Date
September 1, 1971
Publication Information
Publication: NASA. Goddard Space Flight Center The Gum Nebula and Related Probl.
Subject Category
SPACE SCIENCES
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19720004101Analytic PrimaryThe Gum nebula and related problems