High-mass pulsators in eclipsing binaries observed using <i>TESS</i>

ABSTRACT Pulsations and binarity are both common features of massive stars. The study pulsating stars in eclipsing binary systems holds great potential for constraining stellar structure evolution theory. However, prior to the all-sky Transiting Exoplanet Survey Satellite (TESS) mission, few such had been discovered or studied detail. We have inspected TESS light curves a large number binaries known contain high-mass stars, compiled list 18 objects which show intrinsic variability. were modelled determine physical properties systems, remove effects order leave residual suitable asteroseismic analysis. Precise mass radius measurements obtained ? Cir, CC Cas, SZ Cam V436 Per V539 Ara. searched pulsation signatures and, within our sample objects, we find six definite eight possible cases ? Cephei pulsation, seven stochastic low-frequency (SLF) variability, instances slowly B (SPB) star pulsation. identified makes asteroseismology feasible avenue constrain interior physics first time.