2022
DOI: 10.1093/mnras/stac875
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High-mass pulsators in eclipsing binaries observed usingTESS

Abstract: Pulsations and binarity are both common features of massive stars. The study of pulsating massive stars in eclipsing binary systems hold great potential for constraining stellar structure and evolution theory. However, prior to the all-sky Transiting Exoplanet Survey Satellite (TESS) mission, few such systems had been discovered or studied in detail. We have inspected the TESS light curves of a large number of eclipsing binaries known to contain high-mass stars, and compiled a list of 18 objects which show int… Show more

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Cited by 23 publications
(31 citation statements)
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References 131 publications
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“…These were identified and distinguished from the regular pulsators and 𝛾-Dor pulsators by inspecting the unfolded TESS light curves. The variability has typical timescales of hours to days, and is consistent with the stochastic low frequency variability that arises from from turbulent core convection driven gravity waves in massive stars (Bowman et al 2019(Bowman et al , 2020Southworth & Bowman 2022). Figure A2 shows examples of their TESS light curves.…”
Section: Stochastic Variabilitysupporting
confidence: 66%
See 1 more Smart Citation
“…These were identified and distinguished from the regular pulsators and 𝛾-Dor pulsators by inspecting the unfolded TESS light curves. The variability has typical timescales of hours to days, and is consistent with the stochastic low frequency variability that arises from from turbulent core convection driven gravity waves in massive stars (Bowman et al 2019(Bowman et al , 2020Southworth & Bowman 2022). Figure A2 shows examples of their TESS light curves.…”
Section: Stochastic Variabilitysupporting
confidence: 66%
“…The binary itself is also eccentric, 𝑒 > 0.2 based on the PHOEBE geometry estimator fit. On the other hand, the Gaia DR3 5310247781838683648 pulsations change in amplitude across the single Sector of available TESS data and are more similar to 16 Lac (Southworth & Bowman 2022). Both of these binaries are promising targets for astereoseismic modeling with additional constraints from spectroscopic orbit results.…”
Section: Regular Pulsatorsmentioning
confidence: 97%
“…In order to precisely measure the stellar mass and avoid the discrepancy outlined above, we rely on dynamical masses from detached eclipsing binaries. Such accurate masses may provide precise age estimates in the M-L plane, where the internal mixing efficiencies can also be constrained for similar mass ranges and evolutionary stages (Southworth & Bowman 2022). We therefore reproduce the evolution of 2 detached systems from the TMBM sample, VFTS 642 and VFTS 500.…”
Section: Discussionmentioning
confidence: 99%
“…3 and has significant residuals, as large as 4 mmag, through both eclipses. The reason for this remains unclear, as we have not encountered this precise problem in previous work on similar or different binary systems 19,38,[46][47][48] . In what follows we discuss the default setup of the modelling process and our attempts to improve the fit.…”
Section: A Roche-geometry Model Of the Light Curvementioning
confidence: 98%
“…Following previous work on massive pulsators in eclipsing binaries 38 , the residuals of the jktebop fit to the unbinned SAP data were used to search for the presence of pulsations in V1388 Ori. We used the combined sectors 43 and 45 residual light curve and calculated the discrete Fourier transform 39 .…”
Section: Frequency Analysismentioning
confidence: 99%