Table 1
Disk and stellar parameters for the models.
| Parameter | Range |
|---|---|
| Chemistry | |
| [C]/[H] | 1 × 10−4 |
| [O]/[H] | 3.5 × 10−4 |
| [N]/[H] | 1.6 × 10−5 |
| Physical structure | |
| γ | 1 |
| ψ | 0.1, 0.2, 0.3 |
| hc | 0.1, 0.2 rad |
| Rc | 60 au |
| Mgas | 10−5, 10−4, 10−3, 10−2, 10−1M⊙ |
| flarge | 0.99 |
| χ | 0.2 |
| Stellar spectrum | |
| Teff | 4000 K + UV (Ṁ = 10−8 M⊙ yr−1), |
| 10 000 K | |
| Lbol | 1, 10 L⊙ |
| LX | 1030 erg s−1 |
| Dust properties | |
| Dust | 0.005–1 μm (small) |
| 1–1000 μm (large) | |
| Other parameters | |
| Cosmic-ray ionization | |
| rate per H2 | 5 × 10−17s−1 |
| External UV flux | G0 |
Notes. Chemistry – initial abundances for C, O, and N. The effect of different elemental abundances for the HNC and HCN abundances is also explored in Sect. 3.4. Physical structure – power-law index (γ) for surface density, power-law index (ψ) for the scale height, scale height (hc) at critical radius (Rc), disk mass, fraction of large-grain population, and its settling parameter (χ).
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