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The Algol System SZ Herculis: Physical Nature and Orbital Behavior
Jae Woo Lee, Chung-Uk Lee, Seung-Lee Kim +2
Multiband CCD photometric observations of SZ Her were obtained between 2008 February and May. The light curve was completely covered and indicated a significant temperature differe…
WZ Cygni: a Marginal Contact Binary in a Triple System?
Jae Woo Lee, Seung-Lee Kim, Chung-Uk Lee +3
We present new multiband CCD photometry for WZ Cyg made on 22 nights in two observing seasons of 2007 and 2008. Our light-curve synthesis indicates that the system is in poor therm…
The Light and Period Variations of the Eclipsing Binary AA Ursae Majoris
Jae Woo Lee, Chung-Uk Lee, Seung-Lee Kim +2
We present new multiband CCD photometry for AA UMa made on 8 nights between January and March 2009; the light curves are the first ever compiled. Historical light curves, as we…
Long-term Photometric Behavior of the Eclipsing Binary GW Cephei
Jae Woo Lee, Jae-Hyuck Youn, Wonyong Han +5
New CCD photometry during 4 successive years from 2005 is presented for the eclipsing binary GW Cep, together with reasonable explanations for the light and period variations. All…