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Table 4
Summary of the results for different values of a and b with the same polytropic index n.
| Run | a | b | n | z τ = 1 | T eff | |||
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| F1 | 0.5 | −1.9 | 3.25 | 5.3 | 13 900 | |||
| F2 | 1 | −3.5 | 3.25 | 5.2 | 13 900 | |||
| F3 | 2 | −6.75 | 3.25 | 5.1 | 13 400 | |||
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| G1 | 0.5 | 0.75 | 1.5 | 3.2 | 16 600 | |||
| G2 | 1 | 0 | 1.5 | 2.9 | 16 300 | |||
| G3 | 2 | −1.5 | 1.5 | 2.7 | 16 100 | |||
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| H1 | 0.5 | 1.5 | 1 | 2.6 | 17 100 | |||
| H2 | 1 | 1 | 1 | 2.3 | 17 500 | |||
| H3 | 2 | 0 | 1 | 2.1 | 18 100 | |||
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| I1 | 0.5 | 4.5 | −1 | 1.1 | 21 800 | |||
| I2 | 1 | 5 | −1 | 0.8 | 23 100 | |||
| I3 | 2 | 6 | −1 | 0.6 | 23 700 | |||
Notes. zτ = 1 is the position of τ ≈ 1 in Mm and Teff is in K. For all the runs, 
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