Eccentricity in planetary systems and the role of binarity - Sample definition, initial results, and the system of HD 211847C. Moutou, A. Vigan, D. Mesa, S. Desidera, P. Thébault, A. Zurlo and G. SalterA&A, 602 (2017) A87DOI: https://doi.org/10.1051/0004-6361/201630173