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- Olofsson, H. (author)
A Possible Solution to the Mass-Loss Problem in M-type AGB Stars
- Article/chapterEnglish2011
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- 2011
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- LIBRIS-ID:oai:DiVA.org:uu-170175
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-170175URI
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- Language:English
- Summary in:English
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- Mass loss is a fundamental, observationally well-established feature of AGB stars, but many aspects of this process are not yet understood. To date, self-consistent dynamical models of dust-driven winds reproducing the observed mass-loss rates seem only possible for M-type stars if the grains in the close circumstellar environment grow to larger sizes than previously assumed. In order to study the grain-size distribution where the mass loss is initiated, high-spatial-resolution interferometry observations are necessary. We have observed two M-type stars using the VLTI/MIDI instrument to constrain the dust-grain sizes through modeling the 10 μm silicate feature. Here we present preliminary results.
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- Ramstedt, S. (author)
- Sacuto, StéphaneUppsala universitet,Teoretisk astrofysik(Swepub:uu)stesa903 (author)
- Maercker, M. (author)
- Höfner, SusanneUppsala universitet,Teoretisk astrofysik(Swepub:uu)sho27173 (author)
- Kerschbaum, F. (author)
- Uppsala universitetTeoretisk astrofysik (creator_code:org_t)
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- In:Why Galaxies Care about AGB Stars II
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