Solid particles in space

Details Solid particles in space Solid particles in space

Apr 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979s%26t....57..347k&link_type=abstract

Sky and Telescope, vol. 57, Apr. 1979, p. 347-353.

Astronomy and Astrophysics

Astronomy

Cosmic Dust, Interstellar Matter, Milky Way Galaxy, Astronomical Maps, Infrared Astronomy, Light Scattering, Mineralogy, Polarized Light

Scientific paper

Solid particles in space called grains or dust are discussed. Observations at visual wavelengths are considered, indicating that the grains extinguish blue light more efficiently than red light, and, consequently, the stars behind interstellar clouds appear redder than those in front of them. The identification of the grain materials through infrared and ultraviolet observations is taken into account, as is the role of the grains in the chemical processes within the interstellar clouds. The polarization of starlights by the dust grains is examined, noting that infrared polarization often marks regions where star formation may be still in process. Also examined are the grains found in circumstellar shells, and the composition of silicate grains

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