AGB Star Models
نویسندگان
چکیده
منابع مشابه
2D Models for Dust-driven AGB Star Winds
New axisymmetric (2D) models for dust-driven winds of C-stars are presented which include hydrodynamics with radiation pressure on dust, equilibrium chemistry and time-dependent dust formation with coupled grey Monte Carlo radiative transfer. Considering the most simple case without stellar pulsation (hydrostatic inner boundary condition) these models reveal a more complex picture of the dust f...
متن کاملThe AGB-star Phenomenon: Setting the Stage
The asymptotic giant branch (AGB) evolution of stars is interesting from many points of view. It is the nal evolutionary phase for the large majority of all stars in the Universe that have left the main sequence. During this stage they contribute to the chemical evolution of galaxies, contribute to the integrated starlight of many galaxies, may provide the only interstellar matter there is in s...
متن کاملNon-linear models for the pulsating post-AGB star SAO96709: metallic lines
Wehave performed a set of nonlinear pulsatingmodels for post-AGB stars and have reconstructed the spectral lines for two chemical elements (Ba II, C I). The present analysis is devoted to the interpretation of recent spectroscopic observations of the pulsating post-AGB star SAO96709. We confirm our earlier result (Jeannin et al. 1996) that the dominant pulsation mode is the first overtone and f...
متن کامل03313 + 6058 : an AGB star with 30 micron emission ⋆
This paper reports a detection of the 30 micron emission feature from the C–rich Asymptotic Giant Branch (AGB) star IRAS 03313+6058 based on the ISO– SWS observation. Modeling of the spectral energy distribution shows that this emission starts at about 20 micron and possibly extends to the limit (45 micron) of the observation. By assuming MgS as the carrier, the number ratio of Sulfur atom in M...
متن کاملIRAS 03313+6058: an AGB star with 30 micron emission
This paper reports a detection of the 30 micron emission feature from the C–rich Asymptotic Giant Branch (AGB) star IRAS 03313+6058 based on the ISO–SWS observation. Modeling of the spectral energy distribution shows that this emission starts at about 20 micron and possibly extends to the limit (45 micron) of the observation. By assuming MgS as the carrier, the number ratio of Sulfur atoms in M...
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ژورنال
عنوان ژورنال: Highlights of Astronomy
سال: 1992
ISSN: 1539-2996
DOI: 10.1017/s1539299600009850