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Dust formation in AGB stars and implications for galaxies

by Alessandro Bressan (SISSA, Trieste, IT)

Jun 13, 2013 from 02:00 PM to 04:30 PM

Where Seminars' room, floor -1, via Ranzani 1

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Dust is ubiquitously found in the Universe, even at high redshifts where galaxies can be considerably younger than a billion years. I will briefly review the two main scenarios for dust formation, Supernovae and AGB stars, and the constraints imposed by high redshift observations on their typical timescales. I will then focus on the AGB scenario, which is particularly relevant also for our understanding of the general evolution of these stars in the local Universe. After a review of the dust contribution by stars of different mass and metallicity, I will discuss some challenging problems found in the comparisons with observations, and their implications for population synthesis models with dust.

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