111 citations · 604 across the 22 of their papers we have counts for
8 papers · 1 filter
Reverberation measurement of the inner radius of the dust torus in NGC 4151 during 2008-2013
V. L. Oknyansky, N. V. Metlova, O. G. Taranova +4
We investigate the correlation between infrared (JHKL) and optical (B) fluxes of the variable nucleus of the Seyfert galaxy NGC 4151 using partially published data for the last 6 y…
Discovery of a deep, low mass ratio overcontact binary GSC 03517-00663
D. -F. Guo, K. Li, S. -M. Hu +3
When observing the blazars, we identified a new eclipsing binary GSC 03517-00663. The light curves of GSC 03517-00663 are typical EW-type light curves. Based on the observation usi…
The first photometric analysis of the near contact binary IR Cas
K. Li, S. -M. Hu, D. -F. Guo +3
The first photometric analysis of IR Cas was carried out based on the new observed BVRI light curves. The symmetric light curves and nearly flat secondary minimum indicate that ver…
Sky Brightness at Weihai Observatory of Shandong University
Di-Fu Guo, Shao-Ming Hu, Xu Chen +2
In this paper, a total of about 28000 images in and band obtained on 161 nights using the one-meter optical telescope at Weihai Observatory (WHO) of Shandong University sin…
Optical Monitoring of OT 546 in 2009
Difu Guo, Shaoming Hu, Xu chen
We reported the monitoring results of OT 546 in V, R and I bands, observed on 22 nights from February 16 to July 1 in 2009 at Weihai Observatory of Shandong University. During our…
Optical Monitoring of the Seyfert Galaxy NGC 4151 and Possible Periodicities in the Historical Light Curve
Di-Fu Guo, Shao-Ming Hu, Jun Tao +3
We report B, V, and R band CCD photometry of the Seyfert galaxy NGC 4151 obtained with the 1.0-m telescope at Weihai Observatory of Shandong University and the 1.56-m telescope at…