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

Volume 40 number 2 (2012)

Download this article (pdf)

John R. Percy

Department of Astronomy and Astrophysics, University of Toronto, Toronto. ON, M5S 3H4, Canada; john.percy@utoronto.ca

Rong Fu

Department of Astronomy and Astrophysics, University of Toronto, Toronto. ON, M5S 3H4, Canada; john.percy@utoronto.ca

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.