Variations in ultraviolet extinction - Effect of polarization revisited

Details Variations in ultraviolet extinction - Effect of polarization revisited Variations in ultraviolet extinction - Effect of polarization revisited

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987qjras..28..312g&link_type=abstract

Royal Astronomical Society, Quarterly Journal (ISSN 0035-8738), vol. 28, Sept. 1987, p. 312-322.

Astronomy and Astrophysics

Astronomy

5

Interstellar Extinction, Periodic Variations, Polarization Characteristics, Stellar Spectra, Ultraviolet Spectra, Visible Spectrum, Interstellar Matter, Particle Size Distribution

Scientific paper

The alignment of the particles responsible for the polarization and visual extinction is shown to provide a basis for changing the saturation level of the ultraviolet extinction without changing the particle sizes. If the particles are well aligned, it is predicted that there should be significantly lower extinction in the ultraviolet relative to the visible for stars viewed perpendicular to magnetic-field lines (maximum polarization) as compared with those viewed across the field lines. Preliminary evidence for such an effect is noted in Carina.

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