157 citations · 1.2k across the 60 of their papers we have counts for
6 papers · 1 filter
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 behavior of the eclipsing cataclysmic variable V729 Sgr
Han Zhongtao, Qian Shengbang, Lajús +3
We present the analysis results of an eclipsing cataclysmic variable (CV) V729 Sgr, based on our observations and AAVSO data. Some outburst parameters were determined such as outbu…
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…
Cyclic period oscillation of the eclipsing dwarf nova DV UMa
Z. -T. Han, S. -B. Qian, Irina Voloshina +1
DV UMa is an eclipsing dwarf nova with an orbital period of h, which lies just at the bottom edge of the period gap. To detect its orbital period changes we present 12 n…