Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...231..187m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 231, no. 1, May 1990, p. 187-198.
Astronomy and Astrophysics
Astrophysics
20
Diffuse Radiation, Interplanetary Medium, Near Ultraviolet Radiation, Radiation Distribution, Relic Radiation, Background Radiation, Cosmic Dust, Interstellar Matter, Zodiacal Light
Scientific paper
The diffuse radiation field from 1650-3100 A has been observed by spectrometer aboard the Space Shuttle, and the contributions of the zodiacal light an the diffuse cosmic background to the signal have been derived. Colors ranging from 0.65 to 1.2 are found for the zodiacal light with an almost linear increase in the color with ecliptic latitude. This rise in color is due to UV brightness remaining almost constant while the visible brightnesses drop by almost a factor of two. This is interpreted as evidence that the grains responsible for the UV scattering have much more uniform distribution with distance from the ecliptic plane than do those grains responsible for the visible scattering. Intensities for the cosmic diffuse background ranging from 300 units to 900 units are found which are not consistent with either a correlation with N(H I) or with spatial isotropy.
Feldman Paul D.
Henry Richard C.
Murthy Jayant
Tennyson Peter D.
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