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Dust Evolution from Nearby Galaxies: Bridging the Gap Between Local Universe and Primordial Systems

Published online by Cambridge University Press:  01 June 2008

Frédéric Galliano
Frédéric Galliano*
Affiliation:
Department of Astronomy, University of Maryland, College Park, MD 20742, USA email: [email protected]
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Abstract

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This paper presents the results of a study aimed at understanding the evolution of the dust properties, as a function of both the environmental conditions and the metal enrichment of the system. I first review the peculiar dust properties of dwarf galaxies, and discuss attempts to understand their origin. Then, I discuss the evolution of the PAH and dust abundances, constrained by the UV-to-radio SED of nearby galaxies, comparing the properties of low-metallicity environments and more evolved systems. I discuss the long term evolution of dust in galaxies, comparing the grain production by various stellar progenitors to their destruction by SN blast waves and in H ii regions. Finally, I will show how these models explain the paucity of PAHs in low-metallicity environments.

Keywords

stars: AGBsupernovae: generalISM: abundancesISM: dustISM: extinctiongalaxies: dwarfgalaxies: evolutiongalaxies: high-redshiftgalaxies: starburstinfrared: galaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Issue S255: Low-Metallicity Star Formation: From the First Stars to Dwarf Galaxies , June 2008 , pp. 246 - 253
Copyright
Copyright © International Astronomical Union 2008

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