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Composite interstellar grains and the 2175Å feature

Published online by Cambridge University Press:  01 February 2008

Deepak B. Vaidya  and
Ranjan Gupta
Deepak B. Vaidya
Affiliation:
Gujarat College, Ahmedabad 380006, India email: dbv@satyam.net.in
Ranjan Gupta
Affiliation:
IUCAA, Pune-411007, India email: rag@iucaa.ernet.in
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Abstract

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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.

Keywords

Dustextinctionabundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S251: Organic Matter in Space , February 2008 , pp. 77 - 78
Copyright
Copyright © International Astronomical Union 2008

References

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