Search for dissertations about: "stars: low mass - stars: abundances"
Showing result 1 - 5 of 13 swedish dissertations containing the words stars: low mass - stars: abundances.
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1. Solar Type Stars as Calibrators : A Photometric and Spectroscopic Study on the Atmospheric Properties of Late-type Stars
Abstract : Detailed knowledge of solar-type stars is essential in the understanding of the evolutionary past, presence and future of the Sun as well as the formation of its planetary system. Moreover, solar-type stars are of key significance for the study of the evolution of the Galaxy. The ages of solar-type stars map the full galactic evolution. READ MORE
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2. Charting Circumstellar Chemistry of Carbon-rich AGB Stars
Abstract : Stars of low to intermediate initial masses (0.8 - 8 M⊙) enter the asymptotic giant branch (AGB) phase during their late evolution. READ MORE
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3. Studies of the S-type AGB star W Aquilae : The circumstellar envelope and the fain companion
Abstract : Low- and intermediate-mass stars will all eventually enter the asymptotic giant branch (AGB) phase. AGB stars experience intense mass-loss, generating a significant fraction of the dust and molecular matter that enrichesthe ISM. AGB stars are also responsible for a the production of about half of all elements heavier than iron. READ MORE
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4. On the Winds of Carbon Stars and the Origin of Carbon : A Theoretical Study
Abstract : Carbon is the basis for life, as we know it, but its origin is still largely unclear. Carbon-rich Asymptotic Giant Branch (AGB) stars (carbon stars) play an important rôle in the cosmic matter cycle and may contribute most of the carbon in the Galaxy. READ MORE
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5. The nature of stars with a common origin: clues from metallicity, elemental abundances, and kinematics
Abstract : Most of field stars originate from dissolved star clusters. If the gas cloud is well mixed the stars in the cluster are expected to be chemically homogenous. READ MORE