A Synthesis of Our Present Knowledge of Interstellar Dust

Details A Synthesis of Our Present Knowledge of Interstellar Dust A Synthesis of Our Present Knowledge of Interstellar Dust

Feb 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974ssrv...15..469w&link_type=abstract

Space Science Reviews, Volume 15, Issue 4, pp.469-482

Mathematics

Logic

8

Scientific paper

The present state of knowledge as regards interstellar dust is reviewed in Section 1 (Introduction); Section 2 (Composition of Dust Grains: graphite, silicate, dirty-ice, diamond); Section 3 (Size of Grains: mainly r ≃ 10-6 cm); Section 4 (Charge and Temperature of Grains: charge varies from 1 10 electrons (H i clouds) to 500 electrons (H ii clouds); temperature of grain material is about 10 20 K); Section 5 (Distribution and Origin of Grains: confined mainly to discs and arms of spiral galaxies, having had a passive origin by efflux from late-type stars or carbon-stars); Section 6 (Cosmogonical and Cosmological Aspects of Interstellar Grains: accretion by electrical-image forces of one dust grain onto a similarly-charged grain links up the absence of dust and gas in elliptical galaxies with the absence of a magnetic field of the type found in spirals. The origin of the 3 K background radiation field could be produced by a population of rotating silicate grains of r ˜ 10-7 cm); Section 7 (Conclusion).

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