Energy output and surface termperature for Star Cluster CYG OB1.
A data frame with 47 observations on the following 2 variables.
log survface termperature of the star.
log light intensity of the star.
The Hertzsprung-Russell (H-R) diagram forms the basis of the theory of stellar evolution. The diagram is essentially a plot of the energy output of stars plotted against their surface temperature. Data from the H-R diagram of Star Cluster CYG OB1, calibrated according to VanismaGreve1972 are given here.
F. Vanisma and J. P. De Greve (1972), Close binary systems before and after mass transfer. Astrophysics and Space Science, 87, 377–401.
D. J. Hand, F. Daly, A. D. Lunn, K. J. McConway and E. Ostrowski (1994). A Handbook of Small Datasets, Chapman and Hall/CRC, London.
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