A population-synthesis framework shows rotation and unresolved companions bias isochrone ages by a factor of at least 2 near the ZAMS and by 31% for older A stars, adding ~0.1 solar mass and ~180 Myr random uncertainties.
Astrophysical Journal, vol
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3D CO5BOLD simulations show convective overshoot increases the fully mixed mass in DA white dwarfs by up to 2.5 orders of magnitude and shifts the convection onset temperature to 18000-18250 K.
Spectral synthesis confirms β PsA is nearly pole-on (i≈4.75°) with rapid rotation (Ω/Ωcrit≈0.93), gravity darkening, and true luminosity 26.2 L⊙.
Observational analysis of HD210684 yields rotational period 5.02188 d, magnetic obliquity 77°, and main-sequence age ~1.45 Gyr from photometry, LSD magnetic measurements, and MESA/GYRE modeling.
citing papers explorer
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Quantifying isochrone-based age uncertainties for rapidly rotating A-type stars
A population-synthesis framework shows rotation and unresolved companions bias isochrone ages by a factor of at least 2 near the ZAMS and by 31% for older A stars, adding ~0.1 solar mass and ~180 Myr random uncertainties.
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Convective Overshoot and Macroscopic Diffusion in Pure-Hydrogen Atmosphere White Dwarfs
3D CO5BOLD simulations show convective overshoot increases the fully mixed mass in DA white dwarfs by up to 2.5 orders of magnitude and shifts the convection onset temperature to 18000-18250 K.
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The Debris Disk Host $\beta$ Piscis Austrinus is a Rapidly Rotating Star Seen Nearly Pole-On
Spectral synthesis confirms β PsA is nearly pole-on (i≈4.75°) with rapid rotation (Ω/Ωcrit≈0.93), gravity darkening, and true luminosity 26.2 L⊙.
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Study of photometric and spectral variability of the roAp star HD~210684
Observational analysis of HD210684 yields rotational period 5.02188 d, magnetic obliquity 77°, and main-sequence age ~1.45 Gyr from photometry, LSD magnetic measurements, and MESA/GYRE modeling.