CCD Photometry, Period Analysis, Light Curve Deconvolution, and Evolutionary Status of V367 Camelopardalis, a High Amplitude δ Scuti Variable Star

Volume 53 number 1 (2025)

Download this article (pdf)

W. Allen Gilchrist, Jr.

Stonecrest Observatory, 104 Deer Ridge Drive, Fort Davis, TX 79734; gilchrist.allen@ymail.com

Kevin B. Alton

Desert Blooms Observatory, 70 Summit Avenue, Cedar Knolls, NJ 07927; kbalton@optonline.net

Robert H. Nelson

In Memoriam

Abstract

We present precisely timed CCD derived photometric magnitude data (B, V, and Ic) taken at the Desert Blooms Observatory (DBO) and the Stonecrest Observatory (SO) between November 25, 2020 and November 25, 2023, for V367 Cam, a High Amplitude δ Scuti (HADS) pulsating variable star. These data were combined with V magnitudes from the AAVSO International Database (AID) and stellar flux measurements from the Transiting Exoplanet Survey Satellite (TESS) resulting in a total of 283 new times of maxima (ToMx). An updated linear ephemeris (Max (BJD – TDB) = (2460273.8250 ± 0.00011) + (0.121595763 ± 0.000000009) E) was produced from the combination of all these data. The multi-color DBO and SO data provided B–V color indices yielding estimates of effective temperature (Teff = 5860 ± 50 K) and other parameters (absolute visual magnitude, Mv = 1.94 ± 0.06; luminosity, L* = 14.6 ± 1 L⊙; and R* = 3.71 ± 0.14 R⊙). Discrete Fourier deconvolution of the data revealed a fundamental oscillation (F1 = 9.22 d^–1) and two significant harmonics (F2 = 16.44 d^–1 and F3 = 24.67 d^–1). Comparison with PARSEC stellar models gave some insight into the evolutionary status of V367 Cam (mass, 1.55 < M* < 1.71 M⊙; 2.14 < age < 2.2 Gyr; and radius, 3.29 < R* < 3.65 R⊙) .