Astronomy, a handy manual for students and others (1918)
Dyson, Frank Watson, Sir, 1868-1939 · New York, E.P. Dutton & Co. · leaf 241
umerically for the changesof brightness. The spectroscope shows the stars tobe gaseous, but Prof. Myers figures give the astound-ing result that the mean density of the system is a littleless than that of air. 8 Cephei.—The light curve of h Cephei is very typical of short-periodvariables. The… … Diag. XCII.Light changes of 5 Cephei, the fall. VARIABLE STARS AND NEW STARS 231 to be a spectroscopic binary, whose changes in velocityhad the same period as the light changes. Thespectrum of only one component is shown. The staris found to be moving in a very eccentric orbit, and ifit exhibited…
Astronomy
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