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Pulsations and binarity are both common features of massive stars. The studyof pulsating massive stars in eclipsing binary systems hold great potential forconstraining stellar structure and evolution theory. However, prior to theall-sky Transiting Exoplanet Survey Satellite (TESS) mission, few such systemshad been discovered or studied in detail. We have inspected the TESS lightcurves of a large number of eclipsing binaries known to contain high-massstars, and compiled a list of 18 objects which show intrinsic variability. Thelight curves were modelled both to determine the physical properties of thesystems, and to remove the effects of binarity in order to leave residual lightcurves suitable for asteroseismic analysis. Precise mass and radiusmeasurements were obtained for delta Cir, CC Cas, SZ Cam, V436 Per and V539Ara. We searched the residual light curves for pulsation signatures and, withinour sample of 18 objects, we find six definite and eight possible cases of betaCephei pulsation, seven cases of stochastic low-frequency (SLF) variability,and eight instances of possible slowly pulsating B (SPB) star pulsation. Thelarge number of pulsating eclipsing systems we have identified makesasteroseismology of high-mass stars in eclipsing binaries a feasible avenue toconstrain the interior physics of a large sample of massive stars for the firsttime.

High-mass pulsators in eclipsing binaries observed using TESS