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Table 2.
Parameters of the MARCS+MOLsphere models for Arcturus and the best-fit solution.
| Parameter | Searched range | Solution |
|---|---|---|
| CO column density of the inner layer: Ninner (cm−2) | 1016, 5 × 1016, 1017, …, 1022 | 1020 ± 0.3 |
| CO column density of the outer layer: Nouter (cm−2) | 1016, 5 × 1016, 1016, …, 1022 | 1019 ± 0.15 |
| Temperature of the inner layer: Tinner (K) | 1000 ...2500 (ΔTinner = 100 K) | 1600 ± 400 |
| Temperature of the outer layer: Touter (K) | 1000 ...2500 (ΔTouter = 100 K) | 1800 ± 100 |
| Inner radius the inner layer: Rinner (R⋆) | 1.02, 1.03, 1.04, ..., 1.1 (thickness = 0.01 ...0.02 R⋆) | 1.04 ± 0.02 |
| Inner radius the outer layer: Router (R⋆) | 1.1, 1.5, 2.0, ..., 4.0 (thickness = 0.1 R⋆) | 2.6 ± 0.2 |
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