Multi-epoch monitoring of the AA Tauri-like star V 354 Mon - Indications for a low gas-to-dust ratio in the inner disk warp

PCS acknowledges support by DLR 50 OR 1307 and DFG SFB 676. PCS and CFM gratefully acknowledge ESA Research Fellowships, during which significant parts of the work were performed. DF acknowledges support from the Italian Ministry of Education, Universities and Research project SIR (RBSI14ZRHR). Support for HMG was provided by the National Aeronautics and Space Administration through Chandra Award Number GO6-17021X issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics Space Administration under contract NAS8-03060.