BE Lyncis: A Pulsating Star in the Most Eccentric Binary with a Massive Unseen Companion

Jia-Shu Niu, Ying Zhang, Hui-Fang Xue

We report the discovery of an exceptionally eccentric binary system, BE Lyncis (BE Lyn), which might host a compact companion with mass $\gtrsim 2.5M_{\odot }$. By combining TESS p…