Multiple frequency analysis of the large-amplitude SX Phoenicis star BL Camelopardalis |
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| Authors: | Ai-Ying Zhou E Rodríguez Shi-Yang Jiang A Rolland Víctor Costa |
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| Institution: | Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing 100012, China; Instituto de Astrofísica de Andalucía, CSIC, Apartado 3004, E-18080 Granada, Spain |
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| Abstract: | A multifrequency analysis of the SX Phoenicis star BL Camelopardalis is presented on the basis of new high-speed photometry, along with fitting a total of 136 maxima. BL Cam is a multiple periodic pulsator. We find f 0=25.5768, f 1=25.2982, f 2=25.8622, f 3=31.5912, f 4=25.1065, f 5=25.5147 and f 6=25.6188 cycle d−1 together with the harmonics 51.1513 and 76.7268 cycle d−1 and combination frequencies f 0+ f 1, f 0+ f 2 and f 0+ f 3. The new frequency solution represents the light curves of BL Cam quite well. The observed minus calculated (O-C) analysis indicates that the fundamental frequency is in good agreement with the results of Fourier analysis. |
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| Keywords: | stars: individual: BL Cam stars: oscillations |
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