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Artikel

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Electronic structure investigation of neutral titanium oxide molecules Ti_xO_y

K.S. Jeong, C. Chang, E. Sedlmayr and D. Sülzle

Journal of Physics B, 33, 3417-3430 (2000)

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Abstract:

Electronic and structural properties of energetically low-lying isomers of isolated TixOy (x=1-6, y=1-12) molecular systems have been investigated by density functional theoretical methods. A variety of stationary points is thoroughly characterised. We report total cluster energies, equilibrium geometries, and harmonic vibrational wave numbers.

A systematic investigation of the mass loss mechanism in dust forming long--period variable stars

J.M. Winters, T. Le Bertre, K.S. Jeong, Ch. Helling, E. Sedlmayr

Astronomy & Astrophysics, 361, 641-659 (2000)

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Abstract:

Circumstellar dust shells around long-period variables: VIII. CO infrared line profiles from dynamical models for C-stars

J.M. Winters, J.J. Keady, A. Gauger, and P.V. Sada

Astronomy & Astrophysics, 359, 651-662 (2000)

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Abstract:

We present simplified non-LTE radiative transfer calculations for CO (v 0-1) fundamental and (v 0-2) overtone lines, using the structure of dynamical models for dust shells around carbon-rich long-period variables, which result from a consistent treatment of hydro- and thermodynamics, radiative transfer, chemistry and carbon grain formation.

Dust cloud formation in stellar environments: I. A radiative/thermal instability of dust forming gases

P. Woitke, E. Sedlmayr and B. Lopez

Astronomy & Astrophysics, 358, 665-670 (2000)

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Abstract:

Circumstellar dust shells around long-period variables: VII. The role of molecular opacities

Ch. Helling, J.M. Winters and E. Sedlmayr

Astronomy & Astrophysics, 358, 651-664 (2000)

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On the formation of ''warm molecular layers''

P. Woitke, Ch. Helling, J.M. Winters and K.S. Jeong

Astronomy & Astrophysics, 348, L17-L20 (1999)

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Tip-AGB stellar evolution in the presence of a pulsating, dust-induced "superwind"

K.-P. Schröder, J.M.Winters and E. Sedlmayr

Astronomy & Astrophysics, 349, 898-906 (1999)

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Abstract:

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