Free Access
Volume 534, October 2011
Article Number A18
Number of page(s) 10
Section Stellar structure and evolution
Published online 22 September 2011

Online material

Appendix A: Properties of models

thumbnail Fig. A.1

An HR diagram and the time evolution of Teff, L, log g, R, and Zsurf are shown. Observationally determined  ± 1σ intervals are shown for L, Teff, g, and R. For Teff, the spectroscopically determined error bar is in black, while that determined using luminosity and radius is in red (see the text). Each model is color coded and identified in the figure. The adopted acceptable age range is from 200 to 250 Myr (see the text). In the HR diagram, only the part of the curves between 200 and 250 Myr is shown; see Fig. 1 for a more complete figure. All models were calculated with turbulence.

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Appendix B: Radiative accelerations and interior concentrations for all species

thumbnail Fig. B.1

Radiative accelerations after 232 Myr evolution in a model with mass loss of 10-13   M/yr (red curves) and in a model with turbulence with ΔM0 = 1.4  ×  10-6   M (blue curves) for all calculated atomic species. The sharp mimima in the grad(Ti), grad(Cr), and grad(Mn) curves at log ΔM/M ~  − 10 appear surprising but have been verified to be a systematic property of the OPAL atomic data.

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thumbnail Fig. B.2

Mass fractions in the models with turbulence (blue curves) and mass loss (red curves). See the caption of Fig. B.1.

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© ESO, 2011

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