Free Access
Volume 529, May 2011
Article Number A60
Number of page(s) 20
Section Stellar structure and evolution
Published online 01 April 2011

Online material

Appendix A: Black-and-white version of Fig. 4

thumbnail Fig. A.1

Black-and-white version of Fig. 4. Gray-coded concentrations in two HB stars of the same metallicity after 25 Myr on the HB. Left panel with a Teff of 14 000 K (0.59    M) and right panel of 30 100 K (0.51    M). The scale of the radius is linear, but the logarithmic value of the mass coordinate above a number of points, log ΔM/M, is shown to the left of the horizontal black line. The concentration scale is given in the right insert. Small circles near the top of the left panel mark the extent of the surface convection zone, while similar circles near the center of both models mark the central convection zone. The small inset in between the two panels shows the high Teff star on the radius scale of the low Teff star. For  −7 < log ΔM/M <  −4 the concentration is quite different for many species. It is surprisingly so for C and O for log ΔM/M >  −2.

Open with DEXTER

Appendix B: Properties of evolutionary models

Some of the properties of all evolutionary models calculated, grouped by metallicity. All models in Figs. B.1 to B.4 were calculated with a turbulent diffusion coefficient given by Eqs. (1) and (3) with ΔM0 = 10-7.5    M. See Sect. 2.

thumbnail Fig. B.1

Models with Z0 = 0.0001. The curves are identified in the figure by the mass of the HB model. The color code is the same as used for the left panel of Fig. 2 and is defined in footnote  [5]. Zero age HB is defined as the moment when X(12C) reaches 0.04. In the figures the curves are not all very precisely aligned to that value. X0(surfFe) identifies the Fe mass fraction in the original main-sequence model, similarly for the other species.

Open with DEXTER

thumbnail Fig. B.2

Models with Z0 = 0.001. See caption of Fig. B.1.

Open with DEXTER

thumbnail Fig. B.3

Models with Z0 = 0.004. See caption of Fig. B.1.

Open with DEXTER

thumbnail Fig. B.4

Models with Z0 = 0.02. See caption of Fig. B.1.

Open with DEXTER

Table B.1

Models illustrated in this article, with their ZAHB characteristics.

© ESO, 2011

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.