Dust in Hot Environments: Giant Dusty Galactic Halos

Details Dust in Hot Environments: Giant Dusty Galactic Halos Dust in Hot Environments: Giant Dusty Galactic Halos

1997-06-25

arxiv.org/abs/astro-ph/9706249v1

Astronomy and Astrophysics

Astrophysics

10 pages, LaTeX (lamuphys.sty), 3 figures, IAU166, The Local Bubble and Beyond, Highlight Talk

Scientific paper

10.1007/BFb0104749

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.

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