Colour dependence of zodiacal light models

Details Colour dependence of zodiacal light models Colour dependence of zodiacal light models

Dec 1973

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1973p%26ss...21.2061g&link_type=abstract

Planetary and Space Science, Volume 21, Issue 12, p. 2061-2072.

Computer Science

8

Scientific paper

Colour models of the zodiacal light in the ecliptic have been calculated for both dielectric and metallic particles in the sub-micron and micron size range. Two colour ratios were computed, a blue ratio Cb (0.40 μm, 0.53 μm) and a red ratio, either Cr (0.82 μm, 0.53 μm) or Cr' (0.71 μm, 0.53 μm). The models with a size distribution ~s-2.5ds generally show a colour close to the solar colour and almost independent of elongation. Especially in the blue colour ratio there is generally no significant dependence on the lower cutoff size (0.1-1 μm). The main feature of absorbing particles is a reddening at small elongations. The models for size distributions ~s-4ds show larger departures from solar colour and more variation with model parameters. Colour measurements, including red and near infra-red, therefore are useful to distinguish between flat and steep size spectra and to verify the presence of slightly absorbing particles.

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