6 papers
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…
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…
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…
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…