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

TL;DR

This paper identifies an 8-day pulsation period in the hydrogen-deficient star MV Sgr using photometric analysis, suggesting pulsation as the cause of its variability.

Contribution

It reports the first detection of a pulsation period in MV Sgr, providing new insights into its variability mechanisms.

Findings

Detected an 8-day pulsation period

Amplitude of about 0.03 mag

Variability likely due to pulsation

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 photometry in the AAVSO International Database to identify a period of 8.0 days in this star; the amplitude is about 0.03 mag. The variability is most likely due to pulsation.