SIMBAD references

2023MNRAS.518.3901S - Mon. Not. R. Astron. Soc., 518, 3901-3907 (2023/January-3)

First discovery of quasi-periodic oscillations in the dwarf nova HS 2325+8205 based on TESS photometry.

SUN Q.-B., QIAN S.-B., ZHU L.-Y., DONG A.-J., ZHI Q.-J., LIAO W.-P., ZHAO E.-G., HAN Z.-T., LIU W., ZANG L., LI F.-X. and SHI X.-D.

Abstract (from CDS):

HS 2325+8205 is a long-period eclipsing dwarf nova with an orbital period above the period gap (Porb > 3 h) and is reported to be a Z Cam-type dwarf nova. We study the light variation and the quasi-periodic oscillations (QPOs) of HS 2325+8205 based on the photometry of theTransiting Exoplanet Survey Satellite (TESS). Using a continuous wavelet transform, a Lomb-Scargle periodogram (LSP), and sine fitting methods, we find for the first time that there is a QPO of ∼2160 s in the long outburst top light curves of HS 2325+8205. Moreover, we find that the oscillation intensity of the QPOs of HS 2325+8205 is related to the orbital phase, and the intensity in orbital phases 0.5-0.9 is stronger than in orbital phases 0.1-0.5. Therefore, the relationship between the oscillation intensity of QPOs and the orbital phase may become a topic of research into the origin of QPOs. In addition, we use the LSP to correct the orbital period of HS 2325+8205 to 0.19433475(6) d.

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): techniques: photometric - stars: dwarf novae - stars: individual: HS 2325+8205 - novae, cataclysmic variables

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 8

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