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TU Berlin

Poster

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Circumstellar Dust Shells of pulsating Red Giants as Dynamical Systems

S. Meier, A.B.C. Patzer, M. Lüttke, P. Woitke and E. Sedlmayr

Astronomische Gesellschaft Abstract Series, Vol. 17., (2000)

Abstract:

Miras and long-period variables (LPVs) are highly evolved, pulsating stars on the Asymptotic Giant Branch (AGB) with massive outflows and prominent circumstellar dust shells (CDSs). A CDS, driven by the stellar pulsation, can be considered as a dynamical system which reveals various kinds of complex phenomena like spatio-temporal instabilities, bifurcations, multiperiodicity and transition to chaos.

Dust formation, grain growth and evaporation under the influence of temperature fluctuations

V. Schirrmacher and U. Dirks

Astronomische Nachrichten, 324, Suppl. Issue 3, p. 128 (2003)

Gzipped PostScript version (188 kB)

Abstract:

Opacities for protoplanetary disks

D. Semenov, Th. Henning, M. Ilgner, Ch. Helling, E. Sedlmayr

Tübingen Workshop on Stellar Atmospheres Modeling (2002)

Gzipped ps version (255 KB),

Gzipped Poster PostScript version (408 KB)

NLTE modeling of lines in expanding shells of LPVs

U. Bolick, He. Richter, and E. Sedlmayr

Tübingen Workshop on "Stellar Atmospheres Modeling" (2002)

Gzipped PS version (459 KB)

Poster-Version (Gzipped PostScript, 419 KB)

Abstract:

NLTE Modeling of FeII and [FeII] Lines In The Shocked Atmospheres Of M Miras

He. Richter, P.R. Wood, P. Woitke, U. Bolick, and E. Sedlmayr

Tübingen Workshop on "Stellar Atmospheres Modeling" (2002)

Gzipped ps version (173 kB)

Abstract:

Radiation Transfer Through an Extended Planetary Atmosphere

K. Schnabel, Ch. Helling, P. Woitke, E. Sedlmayr

AG Tagung München 2001

Gzipped PostScript version (140 KB)

Abstract:

On the crystallization of small silica particles in circumstellar environments

M. John, E. Müller, A. B. C. Patzer, M. Lüttke, E. Sedlmayr

AG Tagung München 2001

Abstract:

Extinction Efficiency of Astrophysical Solid Materials

A. Tamanai, D. Alexander, J. Ferguson, E. Sedlmayr

AG Tagung München 2001

Gzipped Poster PostScript version (115 KB)

Abstract:

Modelling the dustosphere of AGB stars

V. Schirrmacher, Ch. Helling, P. Woitke, E. Sedlmayr

Tübingen Workshop on Modelling of Stellar Atmospheres (2001)

Gzipped PostScript version (322 KB)

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