V371 Per - A Thick-Disk, Short-Period F/1O Cepheid

Patrick Wils, Arne A. Henden, Stelios Kleidis +2

V371 Per was found to be a double-mode Cepheid with a fundamental mode period of 1.738 days, the shortest among Galactic beat Cepheids, and an unusually high period ratio of 0.731,…