Table 1
Parameters of the extended model series A and B based on models 042 and 080 from Hintz et al. (2019), hereafter A2 and B4 in the new model series, respectively.
| Model |  |
 |
 |
 |
 |
 |
 |
|---|---|---|---|---|---|---|---|
| [dex] | [dex] | [K] | [dex] | [K] | [dex] | ||
| A1 | −3.0 | −4.1 | 5500 | −5.5 | 6500 | 7.5 | 0.37 |
| A2 | −2.5 | −3.6 | 5500 | −5.0 | 6500 | 7.5 | 1.0 |
| A3 | −2.0 | −3.1 | 5500 | −4.5 | 6500 | 7.5 | 3.16 |
| A4 | −1.9 | −3.0 | 5500 | −4.4 | 6500 | 7.5 | 4.47 |
| B1 | −2.5 | −3.5 | 5500 | −5.0 | 7500 | 8.5 | 0.1 |
| B2 | −2.3 | −3.3 | 5500 | −4.8 | 7500 | 8.5 | 0.16 |
| B3 | −1.8 | −2.8 | 5500 | −4.3 | 7500 | 8.5 | 0.50 |
| B4 | −1.5 | −2.5 | 5500 | −4.0 | 7500 | 8.5 | 1.0 |
| B5 | −1.3 | −2.3 | 5500 | −3.8 | 7500 | 8.5 | 1.59 |
| B6 | −1.2 | −2.2 | 5500 | −3.7 | 7500 | 8.5 | 2.24 |
Notes. (a) The six parameters are consistent with the definitions of Hintz et al. (2019). The column mass density mmin represents the onset of the lower chromosphere and also marks the location of the temperature minimum. The end of the lower chromosphere is located at the column mass density mmid and the temperature Tmid. The end of the upper chromosphere and onset of the transition region is located at (mtop, Ttop), and ∇TR gives the temperature gradient of the transition region. (b)The parameter mi∕m0 defines the mass load in comparison to the respective basis model.
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