Artikel
Circumstellar dust shells around long-period variables: IX. Molecular layers resulting from shocked carbon-rich atmospheres
Ch. Helling and J.M. Winters
Astronomy & Astrophysics, 366, 229-240 (2001)
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Abstract:
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.
Circumstellar dust shells around long-period variables: IX. Molecular layers resulting from shocked carbon-rich atmospheres
Ch. Helling and J.M. Winters
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Abstract:
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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Abstract:
Mineral formation in stellar winds: I. Condensation sequence of silicate and iron grains in stationary oxygen rich outflows
H.-P. Gail, and E. Sedlmayr
Astronomy & Astrophysics, 347, 594-616 (1999)
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Abstract:
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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Abstract:
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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