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Galactic evolution and the two-colour diagram

Published online by Cambridge University Press:  14 August 2015

R. H. Stoy
R. H. Stoy*
Affiliation:
Royal Observatory, Cape Town

Extract

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Information about the past history of the Galaxy may be obtained from a two-colour diagram, since the present distribution of stars in such a diagram depends on the past rate of star formation and the past metal abundances in the interstellar medium. As an illustration of this, I would like to discuss three diagrams that were recently prepared by Dr. M. E. Dixon from Cape photometric data (Dixon 1963a,b).

Type
Section 1: The Galaxy
Information
Symposium - International Astronomical Union , Volume 20: The Galaxy and the Magellanic Clouds , 1964 , pp. 37
Copyright
Copyright © Australian Academy of Science 1964 

References

Davies, R. D., and Tovmassian, H. M. (1963).— M.N. (in press).Google Scholar
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Markarian, B. E. (1951).—Soob. Byurakan. Obs. No. 9.Google Scholar