7 citations · 16 across the 4 of their papers we have counts for
5 papers
DE CVn: an eclipsing post-common envelope binary with a circumbinary disk and a giant planet
Z. T Han, S. B. Qian, L. Y. Zhu +8
We present a timing analysis of the eclipsing post-common envelope binary (PCEB) DE CVn. Based on new CCD photometric observations and the published data, we found that the orbital…
Double cyclic variations in orbital period of the eclipsing cataclysmic variable EX Dra
Zhong-tao Han, Sheng-bang Qian, Irina Voloshina +1
EX Dra is a long-period eclipsing dwarf nova with mag amplitude outbursts. This star has been monitored photometrically from November, 2009 to March, 2016 and 29 new mid-…
Long-term photometric behaviour of the eclipsing Z Cam-type dwarf nova AY Psc
Zhong-tao Han, Sheng-bang Qian, Irina Voloshina +1
New eclipse timings of the Z Cam-type dwarf nova AY Psc were measured and the orbital ephemeris was revised. Based on the long-term AAVSO data, moreover, the outburst behaviors wer…
Physical parameters and orbital period variation of a newly discovered cataclysmic variable GSC 4560-02157
Zhong-tao Han, Sheng-bang Qian, Irina Voloshina +3
GSC 4560-02157 is a new eclipsing cataclysmic variable with an orbital period of days. By using the published and band data together with our observations, we d…
WZ Sge: an eclipsing cataclysmic variable evolving towards the period minimum
Z. -T. Han, S. -B. Qian, Irina Voloshina +1
We present the photometric results of the eclipsing cataclysmic variable (CV) WZ Sge near the period minimum (). Eight new mid-eclipse times were determined and the orbita…