Table 2: $T_{\rm c}/T_{{\rm eff}}$ ratios in models with $N_{\rm H}/N_{{\rm He}}=0.11$ , and $N_{{\rm Fe}}/N_{{\rm H}}=10^{-3}$ .
$\log{g}\diagdown T_{{\rm eff}}$ $1\times 10^7$ $1.5\times 10^7$ $2\times 10^7$ $2.5\times 10^7$ $3\times 10^7$

15.0 1.64 1.51 1.31 1.22 1.22

14.9 1.61 1.47 1.31 1.28 1.29

14.8 1.58 1.47 1.31 1.31 1.29

14.7 1.54 1.45 1.31 1.31 -

14.6 1.51 1.45 1.32 1.37 -

14.5 1.49 1.42 1.33 1.43 -

14.4 1.46 1.39 1.34 1.50 -

14.3 1.44 1.36 1.38 - -

14.2 1.41 1.34 1.39 - -

14.1 1.40 1.31 1.42 - -

14.0 1.37 1.30 1.46 - -

13.9 1.35 1.28 - - -

13.8 1.34 1.28 - - -

13.7 1.33 1.30 - - -

13.6 1.30 1.36 - - -

13.5 1.29 - - - -

13.4 1.25 - - - -

13.3 1.24 - - - -

13.2 1.24 - - - -

13.1 1.22 - - - -

13.0 1.22 - - - -

12.9 1.23 - - - -

**Table 2:** $T_{\rm c}/T_{{\rm eff}}$ ratios in models with $N_{\rm H}/N_{{\rm He}}=0.11$ , and $N_{{\rm Fe}}/N_{{\rm H}}=10^{-3}$ .
$\log{g}\diagdown T_{{\rm eff}}$	$1\times 10^7$	$1.5\times 10^7$	$2\times 10^7$	$2.5\times 10^7$	$3\times 10^7$
15.0	1.64	1.51	1.31	1.22	1.22
14.9	1.61	1.47	1.31	1.28	1.29
14.8	1.58	1.47	1.31	1.31	1.29
14.7	1.54	1.45	1.31	1.31	-
14.6	1.51	1.45	1.32	1.37	-
14.5	1.49	1.42	1.33	1.43	-
14.4	1.46	1.39	1.34	1.50	-
14.3	1.44	1.36	1.38	-	-
14.2	1.41	1.34	1.39	-	-
14.1	1.40	1.31	1.42	-	-
14.0	1.37	1.30	1.46	-	-
13.9	1.35	1.28	-	-	-
13.8	1.34	1.28	-	-	-
13.7	1.33	1.30	-	-	-
13.6	1.30	1.36	-	-	-
13.5	1.29	-	-	-	-
13.4	1.25	-	-	-	-
13.3	1.24	-	-	-	-
13.2	1.24	-	-	-	-
13.1	1.22	-	-	-	-
13.0	1.22	-	-	-	-
12.9	1.23	-	-	-	-

Source LaTeX | All tables | In the text

	1 Introduction
	2 Our models - assumptions and equations
	3 Results
	4 Summary and discussion
	Appendix A: The lower boundary condition
	References