17 citations · 100 across the 26 of their papers we have counts for
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Eclipse Properties and Superhump Evolution in the SU UMa-Type Dwarf Nova Z Cha
Qi-Bin Sun, Sheng-Bang Qian, Li-Ying Zhu +10
The advent of large-scale time-domain surveys provides both opportunities and challenges for understanding accretion disk evolution in cataclysmic variables (CVs). Using high-caden…
Tidally Trapped Two-pole Pulsations Discovered in a Close Binary with a Massive Cephei Star
Ping Li, Wen-Ping Liao, Sheng-Bang Qian +4
Tidally tilted pulsators (TTPs), whose pulsation axis aligns with the binary's semi-major axis, represent a newly established class of oscillators in binary systems. While all prev…
Asteroseismology and Dynamics Reveal Interior Structure and Coeval Evolution in the Triply Post-Main-Sequence system DG Leo
Ping Li, Wen-Ping Liao, Sheng-Bang Qian +4
Scuti stars in binary or multiple systems serve as crucial probes for studying stellar pulsation and evolution. However, many such systems are not ideal for asteroseismology du…
Orbital and Pulsation Analysis of 42 Heartbeat Stars Discovered in TESS Data
Min-Yu Li, Sheng-Bang Qian, Ai-Ying Zhou +7
Heartbeat stars (HBSs) are ideal laboratories for studying the formation and evolution of binary stars in eccentric orbits and their mutual tidal interactions. We present 42 new HB…
Heartbeat Stars Recognition Based on Recurrent Neural Networks: Method and Validation
Min-Yu Li, Sheng-Bang Qian, Li-Ying Zhu +7
Since the variety of their light curve morphologies, the vast majority of the known heartbeat stars (HBSs) have been discovered by manual inspection. Machine learning, which has al…
Superoutbursts and Positive Superhumps Occurred During the Standstill of a Z Cam-type Dwarf Nova
Qi-Bin Sun, Sheng-Bang Qian, Li-Ying Zhu +4
Dwarf novae are semi-detached binaries, where a white dwarf accretes material from a cool main-sequence companion via an accretion disk, and are known for their intermittent outbur…
Evolutionary states and triplicity of four massive semi-detached binaries with long-term decreasing orbital periods in the LMC
Fu-Xing Li, Sheng-Bang Qian, Li-ying Zhu +6
The massive semi-detached binary with a long-term decreasing orbital period may involve a rapid mass-transfer phase in Case A, and thus they are good astrophysical laboratories for…
A New IW And-Type Star: Karachurin 12 with Tilted Disks and Diverse cycles
Qi-Bin Sun, Sheng-Bang Qian, Li-Ying Zhu +4
The IW And-type phenomenon in cataclysmic variables presents a significant challenge to the accretion disk instability model. Using photometric data from the All-Sky Automated Surv…
Tilted Disk Precession and Negative Superhumps in HS 2325+8205: A Multi-Window Analysis
Qi-Bin Sun, Sheng-Bang Qian, Li-Ying Zhu +3
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 pr…
Five New Heartbeat Star Systems with Tidally Excited Oscillations Discovered Based on TESS Data
Min-Yu Li, Sheng-Bang Qian, Ai-Ying Zhou +6
Heartbeat stars (HBSs) with tidally excited oscillations (TEOs) are ideal astrophysical laboratories for studying the internal properties of the systems. In this paper, five new HB…
Twenty-three New Heartbeat Star Systems Discovered Based on TESS Data
Min-Yu Li, Sheng-Bang Qian, Ai-Ying Zhou +6
Heartbeat stars (HBSs) are ideal astrophysical laboratories to study the formation and evolution of binary stars in eccentric orbits and the internal structural changes of their co…
Evidence for a close-in tertiary orbiting around the Algol-type system HZ Dra with tidal splitting and spots activities
Ping Li, Wen-Ping Liao, Sheng-Bang Qian +7
We reported a cyclic variation of diagram with a semi-amplitude of 0.0033 days and a period of 1.05 years for the pulsating eclipsing binary HZ Dra. The cyclic variation can…
Exploring the physical properties of the Dor binary star RX Dra with photometry and asteroseismology
Li Ping, Liao Wen-Ping, Sun Qi-Bin +1
We model the TESS light curve of the binary system RX Dra, and also first calculate a lot of theoretical models to fit the g-mode frequencies previously detected from the TESS seri…
KIC 7914906: An Eclipsing Heartbeat Star with Tidally Excited Oscillations and Gamma Doradus/Delta Scuti Hybrid Pulsations
Min-Yu Li, Sheng-Bang Qian, Li-Ying Zhu +6
We present the eclipsing Heartbeat Star KIC 9704906 with tidally excited oscillations (TEOs) and gamma Doradus/delta Scuti hybrid pulsations. The derived parameters show that it ha…
Pulsation Phases and Mode Identification of Tidally Excited Oscillations in Fourteen Kepler Heartbeat Stars
Min-Yu Li, Sheng-Bang Qian, Li-Ying Zhu +6
Tidally excited oscillations (TEOs) in Heartbeat Stars (HBSs) are an essential probe of the internal properties of the systems, but their potential has yet to be fully exploited. B…
A New Window for Studying Intermediate Polars and Tilted Accretion Disk Precession
Qi-Bin Sun, Sheng-Bang Qian, Li-Ying Zhu +5
TV Col is a long-period eclipsing intermediate polar (IPs) prototype star for the negative superhump (NSH) system. We investigate the eclipse minima, eclipse depth, and NSH amplitu…
Evolution of negative superhumps, quasi-periodic oscillations and outbursts in the Z Cam-type dwarf nova AH Her
Qi-Bin Sun, Sheng-Bang Qian, Min-Yu Li
AH Her is a Z Cam-type dwarf nova with an orbital period of ~ 0.258 d. Dwarf nova oscillations and long-period dwarf nova oscillations have been detected, but no quasi-periodic osc…
Nine New Cataclysmic Variable Stars with Negative Superhumps
Qi-Bin Sun, Sheng-Bang Qian, Li-Ying Zhu +5
Negative superhumps (NSHs) are signals a few percent shorter than the orbital period of a binary star and are considered to originate from the reverse precession of the tilted disk…
Detection of Tidally Excited Oscillations in Kepler Heartbeat Stars
Min-Yu Li, Sheng-Bang Qian, Li-Ying Zhu +6
Heartbeat stars (HBSs) with tidally excited oscillations (TEOs) are ideal laboratories for studying the effect of equilibrium and dynamical tides. However, studies of TEOs in Keple…
New evidence for the precession of tilted disk in SDSS J081256.85+191157.8
Qi-Bin Sun, Sheng-Bang Qian, Li-Ying Zhu +5
Super-orbital signals and negative superhumps are thought to be related to the reverse precession of the nodal line in a tilted disk, but the evidence is lacking. Our results provi…
First discovery of QPOs in the dwarf nova HS 2325+8205 based on TESS photometry
Qi-Bin Sun, Sheng-Bang Qian, Li-Ying Zhu +9
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. Based on the photometry of…