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Dust in Hot Environments: Giant Dusty Galactic Halos

Published online by Cambridge University Press:  12 April 2016

Andrea Ferrara
Andrea Ferrara*
Affiliation:
Osservatorio Astrofisico di Arcetri, Largo Fermi 5, 50125 Firenze, Italy

Abstract

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I review some of the evidences for dust in the Local Bubble and in galactic halos and show that a general mechanism based on radiation pressure is capable of evacuating dust grains from regions dominated by massive star energy input and thus originate huge dusty halos. A Monte Carlo/particle model has been developed to study the dust dynamics above HII chimneys and the results, among other findings, show that dust can travel several kpc away from the plane of the parent galaxy. The cosmological implications of extragalactic dust are briefly outlined.

Type
Part VI Distant Hot Gas, SXRB Fluctuations, Dust, Gamma-rays
Information
International Astronomical Union Colloquium , Volume 166: The Local Bubble and Beyond , 1997 , pp. 371 - 380
Copyright
Copyright © Springer-Verlag 1998

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