Life Cycle of Dust in the Magellanic Clouds and the Milky Way

摘要: To a great extent, our understanding of the life cycle dust is based on observational and theoretical studies Milky Way Magellanic Clouds, which will be topic this contribution. Over past years, large volume observations with unprecedented spatial resolution has been accumulated for Way. It permits investigations different stages dust, from its formation in stellar sources to destruction star-forming regions supernovae shocks. Observations emission, extinction, polarisation light, interstellar element depletions solar neighbourhood provide most accurate constraints reference models applied study extragalactic systems. However, global circumstellar are complicated disk because high confusion along line sight uncertainties distances. In contrast, favourable location sky proximity Clouds allow detailed multi-wavelength dust-forming populations investigation variations grain properties entire galaxies. They enable first comparison between stardust production rates calculations those observations, confirm discrepancy mass observed - "the missing dust-source" problem. Modelling Large Cloud showed that growth by mantle accretion ISM, major source Way, can responsible existing LMC. We present input budgets reveals how role these depends metallicity.