Table 2
Best-fit parameters with their respective 1 σ uncertainty in parenthesis, obtained from fitting components to the continuum visibilities: a disk with a radially constant surface brightness, an unresolved ring, a point source, and a Gaussian.
| Component | ΔRA | ΔDec | Sν,234.2 GHz | α | Semi major axis | Inclination | PA |
|---|---|---|---|---|---|---|---|
| (′′) | (′′) | (mJy) | (′′) | (°) | (°) | ||
| Disk | –a | –a | 152.5 (0.5) | 2.4 (0.1) | 0.22 (0.01), 0.40 (0.01)b | 29.5 (0.5) | 151.0 (0.5) |
| Ring | –a | –a | 18.9 (0.6) | 3.0 (0.4) | 0.48 (0.01) | Fixed | Fixed |
| Point | –a | –a | 1.3 (0.1) | 3.5 (1.3) | – | – | – |
| Gaussian | 0.09c | 0.20c | 8.7 (0.3) | 3.6 (0.6) | 0.19 (0.01) | 52.2 (5.0) | 104.7 (3.0) |
| All components | 149.2 (3.0) | 2.6 (0.1) | |||||
Notes. The center, position angle and inclination for the 3 first components have been fixed during the fitting. The spectral slope α (5th col.) is calculated following Sν ∝ ν−α using measurements at 234.2 and 217.0 GHz (1.28 and 1.38 mm). (a)The first three components have been fixed to the center fitted for the disk component. (b)Contains two values for the disk component: the inner and outer radius. (c)Offset relative to the center of the best-fit disk and ring component.
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