Determination of interstellar extinction from the star color excess

Details Determination of interstellar extinction from the star color excess Determination of interstellar extinction from the star color excess

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pazh...13..385v&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 13, May 1987, p. 385-392. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

1

Cosmic Dust, Interstellar Extinction, Photoabsorption, Stellar Color, Cylindrical Bodies, Grain Size, Ice, Infrared Astronomy, Silicates

Scientific paper

Coefficients are calculated which make it possible to find the total extinction AV from the selective extinction E(V - X) = AV - AX(X = B,R,I,J,H,K). Consideration is given to a model of cylindrical dust grains which are assumed to have a core-mantle (silicate/dirty ice) structure, their partial alignment being of a Davies-Greenstein type. The effects of grain size are considered along with the effects of the degree and direction of alignment. The use of the equation AV = RVX E(V - X) for X = J,H,K with RVJ = 1.38, RVH = 1.20, and RVK = 1.12 is shown to be the most reliable way to determine A sub V.

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