Planetary nebulae in Gaia EDR3: Central star identification, properties, and binarity I. González-Santamaría, M. Manteiga, A. Manchado, A. Ulla, C. Dafonte and P. López Varela A&A, 656 (2021) A51 Published online: 03 December 2021 DOI: 10.1051/0004-6361/202141916