A new photometric and dynamical study of the eclipsing binary star HW Virginis

S. B. Brown-Sevilla,V. Nascimbeni,L. Borsato,L. Tartaglia,D. Nardiello,V. Granata,M. Libralato,M. Damasso,G. Piotto, D. Pollacco,R. G. West, L. S. Colombo, A. Cunial, G. Piazza, F. Scaggiante

Monthly Notices of the Royal Astronomical Society（2021）

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摘要

A growing number of eclipsing binary systems of the ‘HW Virginis’ (HW Vir) kind (i.e. composed by a subdwarf-B/O primary star and an M dwarf secondary) show variations in their orbital period, also called eclipse time variations (ETVs). Their physical origin is not yet known with certainty: While some ETVs have been claimed to arise from dynamical perturbations due to the presence of circumbinary ...

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关键词

binaries: eclipsing,stars: individual: HW Vir,planetary systems,planets and satellites: dynamical evolution and stability,techniques: photometric

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