Mass-loss from AGB stars in Local Group galaxies

Details Mass-loss from AGB stars in Local Group galaxies Mass-loss from AGB stars in Local Group galaxies

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009eimw.confe..35l&link_type=abstract

"The Evolving ISM in the Milky Way and Nearby Galaxies, The Fourth Spitzer Science Center Conference, Proceedings of the confere

Physics

Galaxies: Local Group, Infrared: Stars, Infrared: Agb, Ism: Dust

Scientific paper

We have carried out a Spitzer survey of AGB stars in the satellite galaxies to the Milky Way. The stars cover a metallicity range down to [Fe/H]=-1. The results show that at sub-solar metallicity, AGB mass-loss is strongly dominated by carbon stars. The mass return from oxygen-rich stars is strongly suppressed at low metallicity. Carbon stars show little dependence of the mass-loss rates on metallicity. This is attributed to the difference in dust formation efficiency.

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