Table 4
Properties of the grid point for which the chemistry was analysed in various models.
| Point | r, z (au) | Tgas (K) | Tdust (K) |  |
 |
n<H> (cm−3) | χ | Remark | Reservoirs in fiducial model |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1.41, 0.30 | 300 | 230 | 1.10 | 0.021 | 5.6 × 109 | 3.3 × 105 | Surface layer | H2,He,O,C,CO |
| 2 | 1.79, 0.19 | 85 | 85 | 3200 | 13 | 1.3 × 1012 | 0 | Outer midplane | H2,He,CO,C3H2# |
| 3 | 0.1, 0.0085 | 480 | 480 | 1700 | 62 | 2.2 × 1014 | 0 | Inner midplane | H2,He,CH4,H2O, |
Notes. Location describes the radial and vertical direction in the disk model. n<H> is the particle density of H, 
and 
are the radial and vertical visual extinction, χ is the UV radiation field at that location in units of drain field. The final column mentions the main form of C, H, He, O in the reservoir in the surface layers in the fiducial model.
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