Dust Evolution from Nearby Galaxies: Bridging the Gap Between Local Universe and Primordial Systems
Abstract
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.
- Publication:
-
Low-Metallicity Star Formation: From the First Stars to Dwarf Galaxies
- Pub Date:
- December 2008
- DOI:
- 10.1017/S1743921308024897
- Bibcode:
- 2008IAUS..255..246G
- Keywords:
-
- stars: AGB;
- supernovae: general;
- ISM: abundances;
- ISM: dust;
- ISM: extinction;
- galaxies: dwarf;
- galaxies: evolution;
- galaxies: high-redshift;
- galaxies: starburst;
- infrared: galaxies