R Dataset / Package HSAUR / CYGOB1


On this Picostat.com statistics page, you will find information about the CYGOB1 data set which pertains to CYG OB1 Star Cluster Data . The CYGOB1 data set is found in the HSAUR R package. You can load the CYGOB1 data set in R by issuing the following command at the console data("CYGOB1"). This will load the data into a variable called CYGOB1. If R says the CYGOB1 data set is not found, you can try installing the package by issuing this command install.packages("HSAUR") and then attempt to reload the data. If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the CYGOB1 R data set. The size of this file is about 800 bytes.

CYG OB1 Star Cluster Data


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.


  data("CYGOB1", package = "HSAUR")
  plot(logst ~ logli, data = CYGOB1)

Dataset imported from https://www.r-project.org.

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Attachment Size
dataset-92511.csv 800 bytes
Dataset License
GNU General Public License v2.0
Documentation License
GNU General Public License v2.0