^1,2G. Borisov, ¹A. A. Christou, ³F. Colas, ¹S. Bagnulo, ⁴A. Cellino, ⁵A. Dell’Oro
Astronomy & Astrophysics 618, A178 Link to Article [https://doi.org/10.1051/0004-6361/201732466]
¹Armagh Observatory and Planetarium, College Hill, Armagh BT61 9DG, Northern Ireland, UK
²Institute of Astronomy and NAO, Bulgarian Academy of Sciences, 72, Tsarigradsko Chaussée Blvd., 1784 Sofia, Bulgaria
³IMCCE, Observatoire de Paris, UPMC, CNRS UMR8028, 77 Av. Denfert-Rochereau, 75014 Paris, France
⁴INAF – Osservatorio Astrofisico di Torino, via Osservatorio 20, 10025 Pino Torinese (TO), Italy
⁵INAF – Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, 50125, Firenze, Italy

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