The infrared bands of small silicate spheroids

Details The infrared bands of small silicate spheroids The infrared bands of small silicate spheroids

Dec 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974ap%26ss..31..411m&link_type=abstract

Astrophysics and Space Science, vol. 31, Dec. 1974, p. 411-416.

Astronomy and Astrophysics

Astronomy

4

Absorption Spectra, Cosmic Dust, Infrared Astronomy, Interstellar Extinction, Interstellar Matter, Silicates, Absorption Cross Sections, Infrared Spectra, Light Scattering, Spectral Bands, Stellar Radiation

Scientific paper

We have investigated the effects of the size, shape, and alignment of small silicate spheroids on the wavelength positions of their absorption bands near 10 and 20 microns. These particles are believed to be a major constituent of interstellar grains and are reported to have been observed in circumstellar dust shells. It is found that the bands for spheroids can be displaced by about 1 micron towards longer wavelengths from their positions for corresponding spheres; and that a further, though smaller, displacement can be superimposed upon this by their subsequent alignment.

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