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The atmospheres of many stars have chemical compositions that are significantly different from that of the interstellar medium from which they are formed. This symposium considered all kinds of late-type stars showing altered compositions, the carbon stars being simply the best-known of these. All stages of stellar evolution from the main sequence to the ejection of a planetary nebula were considered, with emphasis on the changes that occur on the asymptotic giant branch. The spectroscopic properties of the photospheres and circumstellar envelopes of chemically-peculiar red giant stars, their origins via single-star evolution or mass transfer in binary systems, and the methods currently used to study them were all discussed in detail.
This volume includes the full texts of papers given orally at the symposium and abstracts of the posters.
Table des matières
Preface. Tribute to Nüzhet Gökdogammaan. Conference photo. List of participants. Introduction. Session I - Surveys. Session II - Models and Abundance Determinations. Session III - Observed Spectra and Energy Distributions. Session IV - Variability. Session V - Post-AGB Stars. Session VI - Binarity. Session VII - Mass-Loss, Winds, and Formation of Dust Grains. Session VIII - Circumstellar Shells. Session IX - Circumstellar Emission and Environment. Session X - Nucleosynthesis and Evolution. Session XI - Galactic Chemical Evolution. Session XII - Observing Facilities. Abstracts of Posters. Indexes.
Résumé
Proceedings of the 177th Symposium of the International Astronomical Union, held in Antalya, Turkey, May 27-31, 1996
