BVR Photometric Observation of SX Phoenicis Sulthan J Djumari (a*), Robiatul Muztaba (a,b,c), Muhammad R Kurniawan (a), Hendra Agus Prastyo (a,d), Alka Budi Wahidin (a,d), Hakim L Malasan (a,c,d), Ridlo W Wibowo (a,d) Aditya Abdillah Yusuf (d)
a) Department of Atmospheric & Planetary Sciences, Faculty of Science, Institut Teknologi Sumatera, Lampung 35365, Indonesia
*sulthan.119290031[at]student.itera.ac.id
b) Doctoral Program in Astronomy, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha No.10, Bandung 40132, Indonesia
c) Astronomy Division, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Bandung 40132, Indonesia
d) Observatorium Astronomi ITERA Lampung (OAIL), Institut Teknologi Sumatera, Lampung 35365, Indonesia
Abstract
Photometric observation of SX Phoenicis [HD 223065, RA(J2000.0) = 23h 46m 32.8s, Dec(J2000.0) = -41d 34^ 54.7^] was made on September 2022, using the 0.25-m Ritchey-Chretien reflector telescope equipped with a CMOS ZWO ASI 533MM Pro camera at ITERA Astronomical Observatory. Analyses of the light curves were performed. We used set of BVR filters to secure the light curves. In Addition, we obtained photometric data of SX Phoenicis from literature to compare with our data. Lomb-Scargle periodogram analysis was performed on the photometric data to detect periodicity and to deduce the period. Values of the O - C from the observation were deduced. The apparent magnitudes were corrected to the atmospheric extinction. Intrinsic colours of B - V and V - R were derived and the physical parameters of this star have been determined from the light curve.
Keywords: period analysis- technique: photometry- stars: SX Phoenicis- variable stars.
