Screening Factors in Late 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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Some aspects of the chemical evolution of late-type dwarf galaxies are reviewed, together with their implications on some issues of cosmological relevance. A more detailed approach to model their evolution is suggested. The importance of deriving the star formation history in these systems by studying their resolved stellar populations is emphasized.
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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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Many reviews have been written on pre-main-sequence binaries over the past 25 years, e.g., Reipurth (1988), Zinnecker (1989), Mathieu (1994), and Goodwin (2010), and particular mention should be made of IAU Symposium No. 200 (Zinnecker and Mathieu, 2001), which is still today a useful reference. Most recently, Duchêne and Kraus (2013) review the binarity for stars of all masses and ages. Stimul...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1974
ISSN: 0074-1809
DOI: 10.1017/s0074180900017629