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Dust and Wind Formation in Low-Metallicity AGB-Stars

Published online by Cambridge University Press:  12 April 2016

Ch. Helling ,
T. Arndt  and
E. Sedlmayr
Ch. Helling*
Affiliation:
Zentrum für Astronomie und Astrophysik, TU Berlin, Hardenbergstraße 36, D-10623 Berlin, Germany
T. Arndt
Affiliation:
Zentrum für Astronomie und Astrophysik, TU Berlin, Hardenbergstraße 36, D-10623 Berlin, Germany
E. Sedlmayr
Affiliation:
Zentrum für Astronomie und Astrophysik, TU Berlin, Hardenbergstraße 36, D-10623 Berlin, Germany
*
1 e-mail: chris@astro.physik.tu-berlin.de

Extract

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The formation of dust and wind in luminous AGB-stars has been studied so far mainly for solar metallicities. Here, the impact of the dust component on the driving mechanism of the massive outflows and the non-linear coupling to hydro/-thermodynamics leads to the creation of dust-induced shock waves, the occurrence of onion-like spatial dust distributions around the star, time-dependent dust-size distributions, multi-periodicity, and the onset of a super-wind phase (see Sedlmayr, these proceedings). The question remains whether these phenomena appear also in metal-deficient models of AGB-stars like those in the Large Magellanic Cloud (LMC).

Type
Part 5. Mass Loss in Pulsating Stars
Information
International Astronomical Union Colloquium , Volume 185: Radial and Nonradial Pulsations as Probes of Stellar Physics , 2002 , pp. 546 - 547
Copyright
Copyright © Astronomical Society of the Pacific 2002

References

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