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A Photometric Analysis of X Persei = 3U 0352+30

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Elaine W. Gottlieb

Edward L. Wright,

William Liller

Center for Astrophysics, Harvard College Observatory and Smithsonian Astrophysical Observatory, Cambridge, Mass.

 

Abstract

 

2677 magnitudes of the hot massive variable star X Persei, the prime optical candidate for the X-ray source 3U 0352+30, have been obtained from blue plates in the Harvard collection taken between 1894.9 and 1975.1. We have analyzed these data for periods from 0.5 to 180 days and find no periodic component of brightness with full sinusoidal amplitude ? 0.05 mag. Other period searches, from 550 to 618 days and from 10.75 to 11.75 hours, likewise gave negative results for full amplitudes of ? 0.07 mag.

 

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