Composite interstellar grains and the 2175˚A feature
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Date
2008-08-14
Authors
Vaidya, D.B.
Gupta, Ranjan
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Publisher
Organic Matter in Space Proceedings IAU Symposium
Abstract
We use discrete dipole approximation (DDA) to study the scattering properties of
composite grains made up of host silicate spheroids and graphite inclusions. We calculate the
extinction cross sections of the composite grains in the wavelength region 0.20–0.55 μm and
study the extinction of the composite grains as a function of graphite inclusions. We present the
composite grain model and discuss the results.
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Keywords
Dust, Extinction, Abundances