Naslov
Discovery of β Cep pulsations in the eclipsing binary V453 Cygni

Autori
Southworth, J. ; Bowman, D. M. ; Tkachenko, A. ; Pavlovski, K.

Izvornik
Monthly notices of the Royal Astronomical Society (0035-8711) 497 (2020), 1; L19-L23

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, pismo, znanstveni

Ključne riječi
binary stars, fundamental parameters, stellar oscillations

Sažetak
V453 Cyg is an eclipsing binary containing 14 and 11 M⊙ stars in an eccentric short-period orbit. We have discovered β Cep-type pulsations in this system using Transiting Exoplanet Survey Satellite data. We identify seven significant pulsation frequencies, between 2.37 and 10.51 d−1, in the primary star. These include six frequencies that are separated by yet significantly offset from harmonics of the orbital frequency, indicating they are tidally perturbed modes. We have determined the physical properties of the system to high precision: V453 Cyg A is the first β Cep pulsator with a precise mass measurement. The system is a vital tracer of the physical processes that govern the evolution of massive single and binary stars.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA