Interstellar Grains and the Diffuse Galactic Light

Details Interstellar Grains and the Diffuse Galactic Light Interstellar Grains and the Diffuse Galactic Light

Jan 1966

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1966natur.209..388w&link_type=abstract

Nature, Volume 209, Issue 5021, pp. 388-389 (1966).

Physics

9

Scientific paper

PRESENT knowledge of the physical nature of the interstellar grains is based principally on interpretations of the observed extinction and polarization of starlight. Some scattering of the galactic radiation field by the interstellar grains must occur and it is recognized that a precise determination of the brightness of such a diffuse galactic light can also contribute to our knowledge of the grains. Since the first investigations of the diffuse light by Elvey and Roach1 in 1937 there have been further studies by Henyey and Greenstein2, van Houten3 (using the measurements of the brightness distribution in the Milky Way by Elsässer and Haug4) and Roach and Smith5. Unfortunately the results of these four investigations are in considerable disagreement. Two important sources of this disagreement arise from uncertainties in assessing (1) the contributions to the observed brightness of the airglow, zodiacal light and light scattered by the Earth's atmosphere; (2) the contributions from faint stars, the integrated starlight.

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