The contact system DF Hya revisited
  New BVRI CCD photometric observations of the contact system DF Hya have been obtained. The light curves were analyzed with the Wilson-Devinney code and new geometric and photometric elements were derived. Moreover, the light curve solution, with the assumption of a third light in the system, revealed the existence of a tertiary component around the eclipsing pair. The present results are compared with those of other recent studies. 
Ifikratis Kamenidis, Alexios Liakos, Panagiotis Niarchos
astro-ph.SR