http://arxiv.org/abs/2212.00558
We investigate the magnetic activity of the G dwarf primary star in the multiple system V815 Herculis. Recently, TESS Sector 26 data have revealed that V815 Her is in fact a four-star system consisting of two close binaries in a long-period orbit. We give preliminary orbital solution for the long-known but unseen “third body” V815 Her `B’, which is itself a close eclipsing binary of two M dwarfs. Long-term spot activity of the G dwarf is presented along with the very first Doppler image reconstructions of its spotted surface.
Z. Kővári, K. Strassmeier, T. Borkovits, et. al.
Fri, 2 Dec 22
75/81
Comments: 3 pages, poster paper presented at the 21th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (Toulouse, France) in 2022