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The Pulsation Period of the Hot Hydrogen-Deficient Star MV Sgr

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John R. Percy
Rong (Hannah) Fu

Department of Astronomy and Astrophysics, University of Toronto, Toronto. ON, M5S 3H4, Canada

Received January 20, 2012; revised April 30, 2012; accepted April 30, 2012

Abstract

MV Sgr is a hot, hydrogen-deficient star which has undergone R CrB fadings. We have used self-correlation analysis and Fourier analysis of CCD V-band photometry in the AAVSO International Database to identify a period of 8.0 days in this star; the amplitude is about 0.03 magnitude. The variability is most likely due to pulsation.

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