Titlebook: Double Stars; Wulff D. Heintz Book 1978 D. Reidel Publishing Company, Dordrecht, Holland 1978 Population.star.star formation.sun

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as mutual influence between the components of a close binary pair develops. Transfer and exchange of mass and the presence of angular momentum in the orbit give rise to special tracks of evolution, not found for single stars, and to peculiar spectral groups. This is not a new story but it has a new ending: Th978-90-277-0886-1978-94-009-9836-0

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pace surrounding the sun shows beyond doubt. Numerous stellar features, and methods of their exploration, ensue specifically from the one but widespread property, the binary nature. Stellar masses are basic quantities for the theory of stellar structure and evolution, and they are ob­ tained from bi

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Understanding Social Dynamics in South Asia — these and other early highlights of 20th-century work are so much connected with the present, that the historical outline can be said here to merge into the stream of current research. Similarly, many results on double stars will have to be reported in later sections, rather than in the present survey.

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https://doi.org/10.1007/978-981-13-9109-5copic and photometric cases) which greatly simplifies the formalism. On the other hand, the measuring errors are much larger, compared with the quantities to be determined, in the binary-star case, so that an orbit needs to be based on a much larger number of observations.

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