
Energy output and surface termperature for Star Cluster CYG OB1.
data("CYGOB1")
A data frame with 47 observations on the following 2 variables.
logst
log survface termperature of the star.
logli
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.
data("CYGOB1", package = "HSAUR3")
plot(logst ~ logli, data = CYGOB1)
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