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Titlebook: Upper Main Sequence Stars with Anomalous Abundances; Proceedings of the 9 C. R. Cowley,M. M. Dworetsky,C. Mégessier Conference proceedings

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書(shū)目名稱Upper Main Sequence Stars with Anomalous Abundances
副標(biāo)題Proceedings of the 9
編輯C. R. Cowley,M. M. Dworetsky,C. Mégessier
視頻videohttp://file.papertrans.cn/944/943809/943809.mp4
叢書(shū)名稱Astrophysics and Space Science Library
圖書(shū)封面Titlebook: Upper Main Sequence Stars with Anomalous Abundances; Proceedings of the 9 C. R. Cowley,M. M. Dworetsky,C. Mégessier Conference proceedings
描述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 t
出版日期Conference proceedings 1986
關(guān)鍵詞Apsis; LOPES; Variation; astronomy; astrophysics; observatory; photometry; planet; planetoid; star; star forma
版次1
doihttps://doi.org/10.1007/978-94-009-4714-6
isbn_softcover978-94-010-8597-7
isbn_ebook978-94-009-4714-6Series ISSN 0067-0057 Series E-ISSN 2214-7985
issn_series 0067-0057
copyrightD. Reidel Publishing Company, Dordrecht, Holland 1986
The information of publication is updating

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The Magnetic Field and other Parameters of the Chemically Peculiar Starsson it is natural that different investigators are interested in working out and improving methods of determination of B.. Especially great attention attracts the method based on using the multicolor Geneva photometry [1]. Cramer and Maeder have found a dependence between B. and parameter Z of multi
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Does ν Cep Indicate a Non-axisymmetric Dynamo?ws a period of about 5 years. It is unplausible that this magnetic field is a relic since νCep was formed by expansion of a B-star. We claim here that νCep represents a dynamo exciting a magnetic field which in the average strongly deviates from symmetry about the rotation axis.
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Missing Levels and Lines of Astrophysical Importance and singly ionized atoms and t o gi ve rough predictions of missing levels and lines. The amount of data that have been published for these elements after the edition of the Multiple Tables are considerable. For detailed information about sources of new data and compilations the reader is referred
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Characteristic Absorption Features in the Spectra of Ap-Si Stars Between 1250 and 1850 ?ssible. The contribution of the Si II multiplets is calculated in LTE for a typical overabundance x 10. of silicon. It accounts for only a small part of the observed absorption. Common unidentified structures, smaller than the 1400 ? depression are pointed out.
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