Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...212..707h&link_type=abstract
Astrophysical Journal, Part 1, vol. 212, Mar. 15, 1977, p. 707-713.
Astronomy and Astrophysics
Astrophysics
29
Far Ultraviolet Radiation, Interstellar Radiation, Latitude, Sky Brightness, Stellar Radiation, A Stars, B Stars, Electromagnetic Scattering, Interstellar Matter, Radiant Flux Density
Scientific paper
A 0.62-sq cm Geiger counter, sensitive between 1425 and 1640 A, was used to map the far-ultraviolet brightness of about half the sky, providing an experimental measurement of the far-ultraviolet interstellar radiation field. At 1530 A, the energy density is approximately 7.4 by 10 to the -17th power erg/cu cm per A. Comparison with integrations of star catalogs calibrated to the ultraviolet shows, as expected, that the bulk of the radiation comes directly from B- and A-type stars. The galactic-latitude dependence of the radiation is analyzed in an unsuccessful attempt to set limits on the absorbing and scattering properties of the interstellar grains in the far-ultraviolet. Excess radiation observed at the galactic pole is probably residual airglow from above the rocket altitude.
Fritz Georg
Henry Richard C.
Shulman Seth D.
Swandic J. R.
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