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Upper Main Sequence Stars with Anomalous Abundances

Proceedings of the 90th Colloquium of the International Astronomical Union, held in Crimea, U.S.S.R., May 13–19, 1985

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Proceedings of the 90th Colloquium of the International Astronomical Union, held in Crimea, USSR, May 13-19, 1985

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Titel: Upper Main Sequence Stars with Anomalous Abundances
Autoren/Herausgeber: C.R. Cowley, M.M. Dworetsky, C. Mégessier (Hrsg.)
Aus der Reihe: Astrophysics and Space Science Library
Ausgabe: 1986

ISBN/EAN: 9789027722966

Seitenzahl: 490
Format: 25,4 x 17,8 cm
Produktform: Hardcover/Gebunden
Gewicht: 1,950 g
Sprache: Englisch

This volume contains papers presented at IAU Colloquium No. 90. at the Crimean Astrophysical Observatory in May of 1985. A few additional contributions are included from authors who for various reasons were unable to attend the meeting. Four years have passed since the last major international conference on chemically peculiar stars of the upper main sequence was held in Liege. Belgium in 1981. Previous conferences were held in 1975 (Vienna. Austria) and in 1965 (Greenbelt. Maryland. USA). As the proceedings of this Colloquium show. the recent availability of ultraviolet spectra of large numbers of normal and chemically peculiar A and B stars is having a major impact on the way we study these objects. and has led to many new. exciting and unanticipated results. Simultaneously. the more traditional study of optical spectra has been advanced through the increasing use of very high spectral resolution with high signal-to-noise detectors. The chemically peculiar (CP) stars on the upper main sequence belong in the standard framework within which we understand stellar evolution and the history of matter. Recent work has made it clear that the unusual chemistry and magnetic structure of these objects is of relevance across the broad domain of stellar astronomy. from the upper main sequence to horizontal branch stars and white dwarfs. Metal poor (J>. Boo) as well as metal rich (Ap. Am) stars are an integral part of the picture.

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