Pulsation Analysis of the High Amplitude δ Scuti Star CW Serpentis

Abstract

Time-series photometric observations were made for the High Amplitude $\delta$ Scuti star CW Ser between 2011 and 2012 at the Xinglong Station of National Astronomical Observatories of China. After the frequency analysis of the light curves, we confirmed the fundamental frequency of $f=5.28677c{d}^{-1}$, together with 8 harmonics of the fundamental frequency, 7 of which are newly detected. No additional frequencies were detected. The O-C diagram, produced with the 21 newly determined times of maximum light combined with those provided in the literature, helps to obtain a new ephemeris formula of the times of maximum light with the pulsation period of $0.189150355\pm 0.000000003days$.

16 pages, 5 figures

References in corpus (1)

• Asteroseismology of HADS stars: V974 Oph, a radial pulsator flavoured by nonradial components

Cited by in corpus (8)

• Asteroseismology of the Double-Mode High-Amplitude $\delta$ Scuti Star VX Hydrae
• Unveiling the Intricate Symphony of Nonlinear Pulsation Mode Interactions in High-Amplitude $\delta$ Scuti Stars
• A rapidly evolving high-amplitude $\delta$ Scuti star crossing the Hertzsprung Gap
• Pulsation Analysis of High-Amplitude $\delta$ Scuti Stars with TESS
• Precise Evolutionary Asteroseismology of High-Amplitude δ Scuti Star AE Ursae Majoris
• Pulsations and Period Variations of the $\delta$ Scuti Star AN Lyncis in a possible three-body system
• Uncorrelated Amplitude and Frequency Variations of the Harmonics in SX Phoenicis Star XX Cygni
• Period Variation Rates of Four Radial Single-Mode High-Amplitude Delta Scuti Stars