Tilted Disk Precession and Negative Superhumps in HS 2325+8205: A Multi-Window Analysis
arXiv:2407.04913 · doi:10.3847/1538-4357/ad6f05
Abstract
Tilted disk precession exists in different objects. Negative superhumps (NSHs) in cataclysmic variable stars (CVs) are believed to arise from the interaction between the reverse precession of a tilted disk and the streams from the secondary star.Utilizing TESS photometry, we present a comprehensive investigation into the tilted disk precession and NSHs in the dwarf nova (DN) HS 2325+8205, employing eclipse minima, eclipse depths, NSH frequencies, and NSH amplitudes and the correlation between them as the windows. We identified NSHs with a period of 0.185671(17) days in HS 2325+8205. The NSH frequency exhibits variability with a period of 3.943(9) days, akin to the tilted disk precession period validated in novae-like stars (NLs, SDSS J0812) and intermediate polars (IPs, TV Col).The O-C of eclipse minima were similarly found to vary cyclically in period 4.135(5) days, characterized by a faster rise than fall. Furthermore, the NSH amplitude exhibits complex and diverse variations, which may be linked to changes in the disk radius, mass transfer rate, and the apparent area of the hot spot. For the first time in DNe, we observe bi-periodic variations in eclipse depth (P1= 4.131(4) d and P2= 2.065(2) d ~ Pprec/2), resembling those seen in IPs, suggesting that variations with P2 are not attributable to an accretion curtain, as previously suspected. Moreover, NSH amplitude and eclipse depth decrease with increasing NSH frequency, while NSH amplitude correlates positively with eclipse depth.These complex variations observed across multiple observational windows provide substantial evidence for understanding of tilted disk precession and NSHs.
arXiv comment19 pages, 10 figures and 3 tables; accepted for publication in ApJ
References in corpus (36)
- The Transiting Exoplanet Survey Satellite
- The disc instability model of dwarf-novae and low-mass X-ray binary transients
- A review of the disc instability model for dwarf novae, soft X-ray transients and related objects
- Precessing jet nozzle connecting to a spinning black hole in M87
- On the precession of accretion discs in X-ray binaries
- Demystifying Kepler Data: A Primer for Systematic Artifact Mitigation
- Study of Superoutbursts and Superhumps in SU UMa Stars by the Kepler Light Curves of V344 Lyrae and V1504 Cygni
- Precession in the inner jet of 3C 345
- SPH Simulations of Negative (Nodal) Superhumps: A Parametric Study
- Dwarf nova outbursts in intermediate polars
- A Candidate Dual AGN in a Double-peaked Emission-line Galaxy with Precessing Radio Jets
- Orbital, Superhump, and Superorbital Periods in the Cataclysmic Variables AQ Mensae and IM Eridani
- SPH simulations of irradiation-driven warped accretion discs and the long periods in X-ray binaries
- Hunting For Eclipses: High Speed Observations of Cataclysmic Variables
- HS0139+0559, HS0229+8016, HS0506+7725 and HS0642+5049: Four new long-period cataclysmic variables
- Atlas of Tilted Accretion Disks & Source to Negative Superhumps
- Numerical Simulations of Naturally Tilted, Retrogradely Precessing, Nodal Superhumping Accretion Disks
- TESS light curves of cataclysmic variables I -- Unknown periods in long-known stars
- TESS light curves of cataclysmic variables -- II: Superhumps in old novae and novalike variables
- The Emergence of Negative Superhumps in Cataclysmic Variables: Smoothed Particle Hydrodynamics Simulations
- TESS light curves of cataclysmic variables -- III -- More superhump systems among old novae and novalike variables
- Accretion-disc precession in UX Ursae Majoris
- KIC 9406652: A laboratory of the tilted disk in cataclysmic variable stars
- Exploring the tilted accretion disc of AQ Men with TESS
- First discovery of QPOs in the dwarf nova HS 2325+8205 based on TESS photometry
- New evidence for the precession of tilted disk in SDSS J081256.85+191157.8
- A 16-Year Photometric Campaign on the Eclipsing Novalike Variable DW Ursae Majoris
- Nine New Cataclysmic Variable Stars with Negative Superhumps
- HS 2325+8205 - an ideal laboratory for accretion disk physics
- EX Draconis: Using Eclipses to Separate Outside-In and Inside-Out Outbursts
- Evolution of negative superhumps, quasi-periodic oscillations and outbursts in the Z Cam-type dwarf nova AH Her
- Tilted discs in six poorly studied cataclysmic variables
- V729 Sgr: A long period dwarf nova showing negative superhumps during quiescence
- KIC 9406652: A laboratory for tilted disks in cataclysmic variable stars. II. Modeling of the orbital light curves
- A New Window for Studying Intermediate Polars and Tilted Accretion Disk Precession
- On the Periods of Negative Superhumps and the Nature of Superoutbursts