Table A.2
Summary of the free-free fluxes at 2 cm, the spectral indices of the free-free emission, and the ionized mass-loss rate of the outflow as inferred from the free-free emission.
| Target | Free-free flux at 2 cm [mJy] | αff | ![$\dot{M}_{\mathrm{i}}\left[M_{\odot}/\mathrm{yr}\right]$](/articles/aa/full_html/2025/08/aa54259-25/aa54259-25-eq50.png) |
Ref |
|---|---|---|---|---|
| BPTau | 0.07 ± 0.02 |  |
(2.80 ± 6.84) 10−10 | 1 |
| DLTau | 0.10 ± 0.05 |  |
(2.05 ± 5.26) 10−9 | 1 |
| DNTau | 0.07 ± 0.05 |  |
(1.02 ± 2.80) 10−9 | 1 |
| DOTau | 0.16 ± 0.05 |  |
(2.65 ± 7.48) 10−9 | 1 |
| DRTau | 0.10 ± 0.04 |  |
(1.27 ± 6.60) 10−8 | 1 |
| DSTau | 0.03 ± 0.01 |  |
(0.68 ± 1.84) 10−9 | 1 |
| FTTau | 0.07 ± 0.04 |  |
(1.30 ± 4.67) 10−9 | 1 |
| GKTau | 0.05 ± 0.02 |  |
(0.86 ± 1.73) 10−9 | 1 |
| GOTau | 0.05 ± 0.03 |  |
(2.35 ± 6.41) 10−10 | 1 |
| HOTau | 0.05 ± 0.02 |  |
(0.71 ± 1.76) 10−9 | 1 |
| HQTau | 0.06 ± 0.02 |  |
(1.74 ± 3.62) 10−9 | 1 |
| IQTau | 0.06 ± 0.03 |  |
(0.47 ± 1.15) 10−9 | 1 |
| MWC480 | 0.24 ± 0.08 |  |
(0.73 ± 2.02) 10−8 | 1 |
| UZTauE | 0.14 ± 0.08 |  |
(1.17 ± 1.68) 10−9 | 1 |
| V409Tau | 0.02 ± 0.01 |  |
(3.48 ± 9.35) 10−10 | 1 |
| V836Tau | 0.12 ± 0.04 |  |
(0.96 ± 2.30) 10−9 | 1 |
| TWHya | 0.28 ± 0.62 |  |
(0.79 ± 1.51) 10−9 | 2 |
| HD163296 | 1.69 ± 0.40 |  |
(2.68 ± 0.81) 10−9 | 3 |
| CIDA9 | 0.02 ± 0.01 |  |
(3.75 ± 9.18) 10−10 | 1 |
| GITau | 0.04 ± 0.02 |  |
(1.22 ± 4.10) 10−9 | 1 |
| IPTau | 0.03 ± 0.02 |  |
(2.84 ± 6.72) 10−10 | 1 |
| GG Tau | 0.22 ± 0.32 | [−0.35, 0.69](0.17)* | (0.57 ± 1.29) 10−9 | 4 |
| HD100546 | 0.48 ± 0.37 | [0.07, 0.57](0.32)* | (1.85 ± 1.69) 10−9 | 4 |
| HD142527 | 0.0067 ± 0.0088 | [0.66, 1.63](1.14)* | (1.41 ± 3.82) 10−9 | 4 |
| AB Aur | 0.21 ± 0.16 | < 0.80 ± 0.16 | (6.59 ± 4.60) 10−9 | 4 |
| HD100453 | 0.018 ± 0.008 | < 1.43 ± 0.08 | −† | 4 |
| HD169142 | 0.03 ± 0.02 | < 0.62 ± 0.11 | (6.55 ± 3.20) 10−10 | 4 |
| HD135344B | 0.005 ± 0.019 | < 0.96 ± 0.71 | (1.03 ± 4.65) 10−9 | 4 |
| MWC758 | 0.053 ± 0.097 | < 0.47 ± 0.33 | (0.92 ± 1.46) 10−9 | 4 |
| SR24S | 0.13 ± 0.03 | < 0.59 ± 0.05 | 1.17 ± 0.24) 10−9 | 4 |
| TCha | 0.34 ± 0.18 | < 0.14 ± 0.12 | (5.30 ± 3.39) 10−10 | 4 |
Notes. References for free-free fluxes and spectral indices include the following: 1) Garufi et al. (2025), 2) Macías et al. (2021), 3) Guidi et al. (2022), and 4) Rota et al. (2024). *We report the confidence interval for the spectral index of the central emission in transition disks, while the average value in the interval used to calculate the ionized mass-loss rate is reported in brackets. See Rota et al. (2024) for further details. † The ionized mass-loss rate cannot be computed for this target, since the spectral index is >1.3 and the denominator in the first line in Equation 2 is negative (see Rota et al. 2024 for further details).
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