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Table 4
Model parameters for the quiescent state of EX Lupi.
| Quantity | Symbol(1) | Value |
|---|---|---|
| Stellar mass | M* | 0.6 M⊙ |
| Stellar luminosity | L* | 0.5 L⊙ |
| Effective temperature | T* | 3800 K |
| UV excess | fUV | 0.011(2) |
| UV power-law index | pUV | 1.3 |
| X-ray luminosity | LX | 2 × 1029erg s−1 |
| X-ray emission temperature | TX | 3 × 107 K |
| Accretion rate | Ṁacc | 4 × 10−10 M⊙ yr−1 (2) |
| Optical extinction | AV | 0(2) |
| Strength of interstellar UV | χISM | 1 |
| Cosmic ray H2 ionisation rate | ζCR | 1.7 × 10−17 s−1 |
| Disc gas mass(*) | Mdisc | 9.61 × 10−3 M⊙ |
| Disc dust mass(*) | Mdust | 1.43 × 10−5 M⊙ |
| Inner disc radius(*) | Rin | 0.0329 au |
| Tapering-off radius(*) | Rtap | 10.2 au |
| Column density power index(*) | ϵ | −1.19 |
| Tapering off power index | γ | 1.0 |
| Extension of inner rim(*) | Raduc | 1.19 |
| Maximum Σ reduction | Reduc | 10−4 |
| Dip radius/Rin(*) | Daduc | 2.95 |
| Scale-height reduction(*) | Deduc | 0.290 |
| Reference gas scale height(*) | Hp(3 au) | 0.376 au |
| Flaring power index(*) | β | 0.951 |
| Minimum dust particle radius(*) | amin | 0.00104 µm |
| Maximum dust particle radius(*) | amax | 4.81 mm |
| Dust size dist. power index(*) | apow | 3.87 |
| Settling method | Settle_method | Riols & Lesur |
| Settling parameter(*) | α | 4.78 × 10−4 |
| Max. hollow volume ratio |  |
80% |
| Dust composition | Mg0.7Fe0.3SiO3 | 50.1% |
| (Volume fractions)(*) | Amorph. carbon | 24.9% |
| Porosity | 25% | |
| PAH abundance rel. to ISM(*) | fPAH | 0.0292 |
| Ratio of charged/neutral PAHs | PAH_charged | 0.8 |
| Chemical heating efficiency(*) | γchem | 0.619 |
| Distance | d | 157.7pc |
| Disc inclination | i | 32° |
Notes. (1)See Woitke et al. (2016) for details and definitions of parameters. (2): These values are debated in the literature, see text. (*): This parameter was optimised during genetic fitting; the final value is given with three digits.
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