A comprehensive ultraviolet extinction study: Grain model and grain evolution implications

Details A comprehensive ultraviolet extinction study: Grain model and grain evolution implications A comprehensive ultraviolet extinction study: Grain model and grain evolution implications

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.218..507c&link_type=abstract

In ESA 4th European IUE Conf. p 507-510 (SEE N84-35135 24-88)

Physics

2

Granular Materials, Interstellar Extinction, Interstellar Matter, Ultraviolet Absorption, Far Ultraviolet Radiation, Iue, Stellar Evolution, Ultraviolet Spectroscopy

Scientific paper

Reliable ultraviolet extinction curves for about 110 stars have been derived. At least 90% of these exhibit a uniform shape in the FUV (λ < 1800 Å) confirming earlier results. Strong variations in the amount of FUV extinction and, in some cases, in the hump occur systematically in some young OB associations. In the diffuse medium the correlation with visual extinction is much stronger for the hump than for the FUV. The data give further support to the tri-modal grain model.

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