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Studies of Interstellar Dust

Name: Studies of Interstellar Dust
Brand: VDM Verlag Dr. Müller
SKU: 9783639223224
Price: 51.09 EUR
Availability: InStock

Modelling the Diffuse radiation from interstellar dust grains

Автор: Shalima Puthiyaveettil

Език:

Корици: С меки корици

Издател: VDM Verlag Dr. Müller

Наличност: Външен склад

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Dust grains scatter as well as absorb UV radiation from stars. The absorbed radiation is re-emitted...

Информация за книгата

Автор

Shalima Puthiyaveettil

Език

Английски език

Корици

Книга - С меки корици

Издадена

2010

страници

124

EAN

9783639223224

ISBN

3639223225

Enbook ID

06830131

Издател

VDM Verlag Dr. Müller

Теглоt

191

Размери

152 x 229 x 9

Пълно описание

Dust grains scatter as well as absorb UV radiation from stars. The absorbed radiation is re-emitted at longer wavelengths. Diffuse UV radiation has been observed from different regions in the Galaxy. The main contributor of this radiation is the scattering by interstellar dust grains. Here, we have attempted to model this radiation and derive the basic properties of dust grains in three regions of the Galaxy, namely Ophiuchus, Coalsack and Orion. For the Ophiuchus region we have spectra from the Voyager spacecraft. Since the observed locations are of low optical depth we have assumed a single scattering model, in order to derive the optical constants of dust grains in the region. In the case of the Coalsack region, which is in the Galactic plane, the densities are high and so we have used a multiple scattering Monte- Carlo model for the dust scattering. The observations for the region are from Voyager as well as FUSE. We derive optical constants that are in agreement with the theoretical predictions for normal Milky Way dust. For the Orion region, we have FUSE observations. We find similar optical constants as in other regions.

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Studies of Interstellar Dust

Modelling the Diffuse radiation from interstellar dust grains

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