An introduction to the study of variable stars (1915)
Furness, Caroline E. (Caroline Ellen), 1869-1936 · Boston, New York, Houghton Mifflin Company · leaf 32
4 THE STUDY OF VARIABLE STARS of time. In order to represent the variation to the eye, the data are plotted on co-ordinate paper, using the time as the horizontal co-ordinate, or abscissa, and the observed magni- tude as the vertical co-ordinate or ordinate. A smooth curve is then drawn through the… … SINGLE LIGHT CURVE OF S URSAE MAJORIS ELEMENTS OF VARIATION When a long series of observations has been made and the results plotted as just described, a study of the curves will show that the same form recurs with more or less regularity, and that certain quantities can be determined which will…
Variable stars
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