Late Stages of Stellar Evolution
نویسندگان
چکیده
منابع مشابه
Late Stages of Stellar Evolution
The Square Kilometer Array will have the sensitivity, spatial resolution, and frequency resolution to provide new scientific knowledge of evolved stars. Four basic areas of scientific exploration are enhanced by the construction of the SKA: 1) detection and imaging of photospheric radio continuum emission and position correlation with maser distributions, 2) imaging of thermal dust emission aro...
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Stars at the end of their lives return much of their mass back to the ISM. This process is the main source of dust in the ISM, and potentially a source of large molecules. I discuss several areas where SKA will have major impact on our understanding of the mass loss and the circumstellar processes. The resulting requirements for SKA, including frequency coverage and location, are discussed.
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The late stages of stellar evolution are characterised by prodigious mass-loss, particularly on the Asymptotic Giant Branch (AGB), resulting in the build up of a circumstellar envelope of gas and dust. In this way, the majority of stars (∼ 0.8 M ̄ < M < ∼ 8 M ̄) will have shed their excess mass by the end of the AGB, allowing them to evolve to hotter temperatures to become the central stars of pl...
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The connection between AGB evolution of stellar populations and infrared vs. ultraviolet properties of the parent galaxies is reviewed relying on the updated lookout provided by population-synthesis theory. In particular, planetary-nebula events and hot horizontal-branch evolution are assessed in a unitary view to outline a plain general picture of galaxy spectrophotometric evolution. This will...
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Interferometric observations of stars in late stages of stellar evolution and the impact of VLTI observations are discussed. Special attention is paid to the spectral information that can be derived from these observations and on the corresponding astrophysical interpretation of the data by radiative transfer modelling. It is emphasized that for the robust and non-ambiguous construction of dust...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1995
ISSN: 0074-1809
DOI: 10.1017/s0074180900228039