Imaging the dust sublimation front of a circumbinary disk M. Hillen, J. Kluska, J.-B. Le Bouquin, H. Van Winckel, J.-P. Berger, D. Kamath and V. Bujarrabal A&A, 588 (2016) L1 Published online: 09 March 2016 DOI: 10.1051/0004-6361/201628125