The 'semitorrid' gas observed in the direction of Gamma-2 Velorum and the GUM nebula

Details The 'semitorrid' gas observed in the direction of Gamma-2 Velorum and the GUM nebula The 'semitorrid' gas observed in the direction of Gamma-2 Velorum and the GUM nebula

Apr 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...229l..39b&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 229, Apr. 1, 1979, p. L39-L43.

Astronomy and Astrophysics

Astrophysics

10

Far Ultraviolet Radiation, Gum Nebula, Interstellar Matter, Ultraviolet Spectra, Binary Stars, Hot Stars, Interplanetary Medium, Interstellar Gas, Iue, Photoionization, Supernova Remnants

Scientific paper

On the basis of recent IUE observations in the far-ultraviolet, the authors report the detection of a 'semitorrid' region of the interstellar medium in the direction of Gamma-2 Velorum and the Gum nebula. The characteristic temperature of this gas is in the 40,000 K range, between the warm (around 1000 K) and hot (roughly 100,000-1,000,000 K) regions reported by various investigators. This temperature is compatible with the theoretical temperature ascribed to the 'fossil Stromgren sphere' by Brandt et al. and Alexander et al.

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