A Reexamination of the Gum Nebula

Details A Reexamination of the Gum Nebula A Reexamination of the Gum Nebula

Jan 1973

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1973ap%26ss..20...27b&link_type=abstract

Astrophysics and Space Science, Volume 20, Issue 1, pp.27-38

Astronomy and Astrophysics

Astrophysics

27

Scientific paper

A detailed analysis of interstellar measurements in the direction of the Gum nebula is carried out. The ionized region is shown to have an angular radius of ˜ 18° and appears to be bounded by a shell of neutral gas. The mean electron temperature deduced from radio-frequency absorption measurements is found to be ≲8500K. These parameters suggest that the nebula is the normal and possibly evolved H ii region of ζ Pup and γ2 Vel, rather than the fossil Strömgren sphere of the Vela supernova as suggested by Brandtet al. (1971).

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