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Tests and Calibrations of Stellar Models with Two Triply Eclipsing Triple Systems by Valle, G.; Dell'Omodarme, M.; Moroni, P. G. Prada; Degl'Innocenti, S. is a scholarly article available to read on EtoBox.

What is Tests and Calibrations of Stellar Models with Two Triply Eclipsing Triple Systems about?

We investigated the possibility of using two recently characterised triply eclipsing triple systems to constrain stellar model parameters. We specifically focused on evaluating the influence of the underlying astrophysical assumptions employed in the characterisation of the system to fix absolute values of the radii, effective temperatures, and metallicity. We used dense grids of pre-computed stellar models to fit the data for the triply eclipsing systems with a modified version of the SCEPtER pipeline. We achieve an excellent agreement with observational data for TIC 650024463, which comprises three low-mass main-sequence (MS) stars. We find it has an age of $9.0^{+1.4}_{-1.1}$ Gyr and a multimodal posterior density. Characterising TIC 323486857 proved more challenging. This system comprises two intermediate-mass MS stars and a slightly more massive tertiary in the red giant branch phase. For this last system we tested alternative scenarios for convective core overshooting. When all stars were assumed to have the same overshooting efficiency, significant discrepancies arose with the observed data for the tertiary star. This discrepancy may arise from the different assumptions rega

Author

Valle, G.; Dell'Omodarme, M.; Moroni, P. G. Prada; Degl'Innocenti, S.

Published

2025

Language

EN