Multiplicity of Galactic Cepheids and RR Lyrae stars from Gaia DR2 - I. Binarity from proper motion anomaly
Pierre Kervella, Alexandre Gallenne, Nancy Remage Evans, Laszlo Szabados, Frédéric Arenou, Antoine Mérand, Yann Proto, Paulina Karczmarek, Nicolas Nardetto, Wolfgang Gieren and Grzegorz Pietrzynski
A&A, 623 (2019) A116
DOI: https://doi.org/10.1051/0004-6361/201834210
