Open Access
Table 3
Fitting parameters and priors for temperature-gradient model.
| Isothermal + Temperature-gradient model PIONIER + MATISSE + MIDI + SED |
||||
|---|---|---|---|---|
| Reduced χ2 | 4.6 | |||
| Description | Parameter | Prior | Median | Best-fit |
| Source distance | d (pc) | 266 | / | / |
| Effective temperature | Teff (K) | 9500 | / | / |
| Stellar radius | R⋆ (R⊙) | 3.5 | / | / |
| Inner edge of the 1st component | Rin, 1 (au) | 0.35 | / | / |
| Temperature power-law of the 1st component | q1 | 0.0 | / | / |
| Surface density power-law of the 1st component | p1 | 0.0 | / | / |
| Surface density power-law of the 2nd component | p2 | 1.5 | / | / |
| Emissivity factor |  |
From 0.1 to 10 | 4.7 |
4.93 |
| Temperature of the isothermal inner component | Tin, 1 (K) | From 1500 to 1800 |  |
1714 |
| Outer edge of the 1st component | Rout, 1 (au) | From 7 to 12 |  |
8.5 |
| Mass of the 2nd component | M2 × 10−8 (M⊙) | From 0.5 to 10 | 3.3 |
4.0 |
| Temperature at the inner edge of 2nd component | Tin, 2 (K) | From 200 to 800 |  |
482 |
| Inner edge of the 2nd component | Rin, 2 (au) | From 8 to 12 |  |
9.45 |
| Outer edge of the 2nd component | Rout, 2 (au) | From 12 to 16 |  |
15.3 |
| Temperature power-law of the 2nd component | q2 | From 0.5 to 1 |  |
0.92 |
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