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Titlebook: Variable Stars in Globular Clusters and in Related Systems; Proceedings of the I J. D. Fernie Conference proceedings 1973 D. Reidel Publish

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书目名称Variable Stars in Globular Clusters and in Related Systems
副标题Proceedings of the I
编辑J. D. Fernie
视频videohttp://file.papertrans.cn/981/980515/980515.mp4
丛书名称Astrophysics and Space Science Library
图书封面Titlebook: Variable Stars in Globular Clusters and in Related Systems; Proceedings of the I J. D. Fernie Conference proceedings 1973 D. Reidel Publish
描述This volume contains the papers and discussions at IAU Colloquium No. 21 on Variable Stars in Globular Clusters and in Related Systems held in Toronto on the 29th, 30th and 31st August 1972. It was the intention of the organizers that this meeting should honour the life long work in this field of Professor Helen Sawyer Hogg. She has been continuously active in observational research on variables in globular clusters for 46 years and her catalogues and bibliographies as well as her research papers, review articles and IA U reports as chairman of the committee on variable stars in clusters are of fundamental importance to all workers in this field. The scope of the colloquium covered both observational and theoretical aspects of the problem, including the relationship of variables to non-variable cluster members, the position of the variables in the HR diagram and their importance for problems of stellar evolution, empirical data on the variables, periods and period changes, and the relevant parts of pulsation theory. The meeting was particularly successful in bringing together observers and theorists. It will have achieved its object if it has shown both observers and theorists whic
出版日期Conference proceedings 1973
关键词Galaxy; LOPES; Population; galaxies; photometry; planet; star; stars
版次1
doihttps://doi.org/10.1007/978-94-010-2590-4
isbn_softcover978-94-010-2592-8
isbn_ebook978-94-010-2590-4Series ISSN 0067-0057 Series E-ISSN 2214-7985
issn_series 0067-0057
copyrightD. Reidel Publishing Company, Dordrecht, Holland 1973
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发表于 2025-3-21 22:47:02 | 显示全部楼层
Observational Aspects of RR Lyrae Variables in Globular Clustersusters. Placed as they are in a peculiar region of the H-R diagram of Population II, the RR Lyr variables can be used as a good test of the theories of advanced evolution or the models of pulsating stars.
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UBV Magnitudes and Colours of 62 RR Lyrae Stars in , Centauri (NGC 5139)or of ESO by the author, support this finding. Also the study of blue horizontal branch stars by Newell, Rodgers and Searle (1969) of the Herstmonceux catalog of . Centauri (Woolley .., 1966) confirms these results, the importance of which for the understanding of the horizontal branch stars and RR Lyrae variables is obvious.
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Period and Period Changes of RR Lyrae Variables in M15ould be improved if a relatively small number of plates were to be obtained each year for several decades, preferably with the same instrument. Individual accuracy could be improved by the use of the electronic camera..The full contents of this paper will be published elsewhere.
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Observations of Faint Globular Clusters (Abell 1955). . 2 (4.43..1, +31 °23’, 1950; .=170°, . = −9°). This cluster was studied some years ago by McCarthy and Treanor (1964) on infrared plates taken with the Schmidt telescope of the Vatican Observatory. After an extensive discussion the authors con­cluded that the object was either a pecu
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