Jones, H. Spencer (Harold Spencer), 1890- · London E. Arnold & co. · leaf 390
he minimum when it is receding most rapidly.The constancy of the period of a Cepheid variable and the DOUBLE AND VARIABLE STARS 341 variation of the radial velocity with the same period as thelight variation suggest that such stars are double, consistingof two components whose orbital plane is… … 4:5 DaysO Z 4 6 8 10 Fig. 99.—The Light Curve of f Geminorum. if the orbit is markedly eccentric an unsymmetrical light curvewould be obtained, the minimum not occurring midwaybetween the two maxima, as in the normal d Cephei type. Onsuch a theory it would be expected that the light minimumshould…
Astronomy
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