First discovery of quasi-periodic oscillations in the dwarf nova HS 2325+8205 based on <i>TESS</i> photometry
نویسندگان
چکیده
HS 2325+8205 is a long-period eclipsing dwarf nova with an orbital period above the gap (Porb>3 h) and reported to be Z Cam-type nova. Based on photometry of Transiting Exoplanet Survey Satellite (TESS), light variation quasi-periodic oscillation (QPOs) are studied. Using Continuous Wavelet Transform (CWT), Lomb-Scargle Periodogram (LSP), sine fitting methods, we find for first time that there QPOs ~ 2160s in long outburst top curves 2325+8205. Moreover, intensity related phase, phases 0.5-0.9 stronger than 0.1-0.5. Therefore, relationship between phase may become research window origin QPOs. In addition, use LSP correct as 0.19433475(6) d.
منابع مشابه
Dwarf nova oscillations and quasi - periodic oscillations in cataclysmic variables - VIII . OY Carinae and oscillations in dwarf novae in quiescence
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2022
ISSN: ['0035-8711', '1365-8711', '1365-2966']
DOI: https://doi.org/10.1093/mnras/stac3272