Orbital Stability of Proposed NY Virginis Exoplanets

Abstract

Er et al. (2021) recently proposed a two-planet solution to account for eclipse timing variations (ETVs) observed from the sdB binary NY Virginis. We tested the proposed planetary system for orbit stability using both numerical simulations and chaotic behavior analysis. The best-fit orbits, as well as those with parameters varying by the published uncertainty range in each parameter, were unstable on a timescale much less than the presumed lifetime of the PCEB phase ($\sim$100 Myr). suggesting that the proposed circumbinary companions fail to provide a complete explanation for the observed ETVs.

arXiv comment4 pages, 3 figures

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Cited by in corpus (1)

• Eclipse timing variations in 7 post-common envelope binaries: an update on recent circumbinary models