Table 2.
Fractional mass in the convection zone q(cvz) = log Mcvz/M.
| Teff | q(cvz) | η | Γe | q0(He) | q1(He) | q2(He) |
|---|---|---|---|---|---|---|
| 5900 | −4.76 | 17.4 | 1.8 | −3.55 | −3.16 | −2.69 |
| 6490 | −4.85 | 11.5 | 1.3 | −3.52 | −3.14 | −2.61 |
| 7053 | −4.90 | 7.6 | 0.9 | −3.46 | −3.09 | −2.54 |
| 7503 | −4.90 | 5.9 | 0.7 | −3.36 | −3.00 | −2.45 |
| 8009 | −4.91 | 4.7 | 0.6 | −3.28 | −2.92 | −2.40 |
| 8469 | −4.93 | 3.8 | 0.5 | −3.25 | −2.90 | −2.40 |
| 8942 | −4.98 | 3.1 | 0.4 | −3.27 | −2.91 | −2.45 |
| 9335 | −5.02 | 2.6 | 0.4 | −3.29 | −2.93 | −2.48 |
| Average | −3.37 | −3.00 | −2.50 | |||
| SD | 0.13 | 0.11 | 0.10 | |||
Notes. η is the electron degeneracy parameter at the bottom of the cvz, Γe = e2/rekT the parameter measuring the Coulomb interaction compared to the thermal energy. q0(He), q1(He), and q2(He) are the total He mass fraction in the envelope without overshoot, assuming one pressure scale height overshoot, and with the non-ideal terms in the diffusion equations switched off. The last two rows give the average and standard deviation (width of the distribution) for the helium mass fractions.
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