Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-25T16:56:02.779Z Has data issue: false hasContentIssue false
  • English
  • Français

Evolutionary Trends in Wide Binary Systems

Published online by Cambridge University Press:  12 April 2016

Peter van de Kamp
Peter van de Kamp*
Affiliation:
Sproul Observatory, Swarthmore, Pennsylvania

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Zdenek Kopal has kindly invited me, and I have accepted, to “instruct the theoreticians on known facts”. He also asked me to express my opinion on the relative evolutionary stages of components.

I am essentially an observing astronomer, occupied with stars in our immediate neighborhood, say within 10 or at most some 25 parsec, i.e., the lower main sequence and the white dwarf degenerate branch.

I hope that I may perhaps contribute by surveying and reporting some relevant data. I shall touch on a number of topics, limited because of selection and lack of knowledge. My contributions to binary stars lie in the realm of parallaxes, mass-ratios and masses, – and for the past half century, perturbations, interpreted as unseen companions, stellar and otherwise. I shall briefly report on some results, and I shall be wondering and hoping that some trace of stellar evolution may possibly be present in these results. After having witnessed for more than half a century my own astronomical evolution, the time has come for me to become more aware of theoretical, evolutionary and cosmological aspects of the cosmic material, I have been playing with so long.

Type
Part II: Evolutionary Trends in Wide Binary Systems
Information
International Astronomical Union Colloquium , Volume 69: Binary and Multiple Stars as Tracers of Stellar Evolution , 1982 , pp. 81 - 103
Copyright
Copyright © Reidel 1982

References

Abt, H.A. 1978. In Protostars and Planets. Univ. of Arizona Press, p. 323 Google Scholar
Abt, H.A., Levy, S.G. 1981. Ap.J. Suppl. 30, 273 CrossRefGoogle Scholar
Bancall, J.N., Soneira, R.M. 1981. Ap.J. 246, 246 Google Scholar
Biesbroeck, van G. 1957. Journ. Roy. Astron. Soc. Canada 51, 35 Google Scholar
Kamp, van de P. 1961. PASP 73, 389 CrossRefGoogle Scholar
Kamp, van de P. 1961. PASP 73, 404 Google Scholar
Kamp, van de P. 1978. Sky and Telescope 56, 397 Google Scholar
Kamp, van de P. 1981. Stellar Paths. D. Reidel Publ. Co., Dordrecht King, D.S. 1981. Ap.J., in pressGoogle Scholar
Luyten, W.J. 1969. Minnesota Publ. 18 Google Scholar
Payne-Gaposchkin, C., Gaposchkin, S. 1946. Astron. J. 52, 29 CrossRefGoogle Scholar
Tolbert, Ch.R. 1964. Ap.J. 139, 1105 CrossRefGoogle Scholar
Wegner, G. 1981. Astron. J. 86, 264 CrossRefGoogle Scholar
Williams, E.T.R., Vyssotsky, A.N. 1942. PASP 54, 260 CrossRefGoogle Scholar