Title: Searching for visual companions of close Cepheids. VLT/NACO lucky imaging of Y Oph, FF Aql, X Sgr, W Sgr and η Aql
Authors: A. Gallenne, P. Kervella, A. Mérand, N. R. Evans, J. H. V. Girard, W. Gieren, G. Pietrzynski
Journal: Astronomy and Astrophysics
Publication type: article
DOI: 10.1051/0004-6361/201423872