Table 4.
Spectral indices and index limits of known stellar sources.
| Source | FluxTAPER5 (mJy) | FluxTAPER9 (mJy) | FluxTAPERALMA (mJy) | Spectral index (α) |
|---|---|---|---|---|
| WR O | < 0.10 | < 0.10 | 0.28 ± 0.04 | > 0.37 |
| WR U | < 0.19 | < 0.15 | 0.17 ± 0.05 | > −0.01 |
| WR Q | < 0.12 | < 0.10 | 0.18 ± 0.05 | > 0.17 |
| WR A | 0.62 ± 0.08 | 0.94 ± 0.05 | 3.89 ± 0.22 | 0.61 ± 0.04 |
| WR D | < 0.17 | 0.17 ± 0.05 | 0.58 ± 0.07 | 0.50 ± 0.16 |
| WR B | 3.51 ± 0.12 | 2.96 ± 0.09 | 2.62 ± 0.23 | −0.10 ± 0.03 |
| WR G | < 0.16 | 0.13 ± 0.04 | 0.72 ± 0.08 | 0.71 ± 0.14 |
| WR P | < 0.12 | < 0.12 | 0.50 ± 0.06 | > 0.52 |
| WR I | 0.16 ± 0.04 | 0.47 ± 0.04 | 2.02 ± 0.11 | 0.79 ± 0.08 |
| WR V | < 0.24 | < 0.28 | 0.90 ± 0.09 | > 0.47 |
| WR L | 0.24 ± 0.06 | 0.48 ± 0.04 | 3.37 ± 0.18 | 0.88 ± 0.07 |
| WR S | < 0.13 | < 0.09 | 0.36 ± 0.07 | > 0.42 |
| W13 | < 0.20 | < 0.21 | 0.18 ± 0.05 | > −0.05 |
| WR K | < 0.16 | < 0.14 | 0.16 ± 0.05 | > 0.02 |
| WR E | < 0.16 | < 0.10 | 0.81 ± 0.06 | > 0.66 |
| WR F | < 0.12 | 0.37 ± 0.04 | 1.26 ± 0.09 | 0.51 ± 0.07 |
| WR C | < 0.17 | < 0.11 | 0.22 ± 0.04 | > 0.15 |
| WR H | < 0.12 | < 0.09 | 0.28 ± 0.06 | > 0.35 |
| WR M | < 0.16 | 0.11 ± 0.03 | 0.39 ± 0.05 | 0.53 ± 0.12 |
| W16a | 1.59 ± 0.11 | 1.67 ± 0.11 | 1.23 ± 0.15 | −0.10 ± 0.05 |
| W12a | 1.77 ± 0.05 | 1.70 ± 0.08 | 0.78 ± 0.13 | −0.30 ± 0.07 |
| W4 | 1.85 ± 0.04 | 1.84 ± 0.04 | 1.78 ± 0.16 | −0.01 ± 0.04 |
| W265 | 1.00 ± 0.04 | 0.94 ± 0.08 | – | −0.13 ± 0.23 |
| W237 | 1.07 ± 0.06 | 1.03 ± 0.05 | 1.05 ± 0.08 | 0.00 ± 0.04 |
| W75 | < 0.13 | 0.23 ± 0.05 | 0.22 ± 0.05 | −0.01 ± 0.12 |
| W20 | 2.23 ± 0.07 | 2.10 ± 0.06 | 1.99 ± 0.16 | −0.03 ± 0.03 |
| W26 | 106.3 ± 0.2 | 117.7 ± 0.4 | 103.3 ± 5.2 | −0.02 ± 0.02 |
| W17 | 0.81 ± 0.09 | 0.86 ± 0.09 | 0.76 ± 0.12 | −0.03 ± 0.07 |
| W46a | < 0.11 | < 0.09 | 0.18 ± 0.04 | > 0.21 |
| W243 | 0.82 ± 0.05 | 1.54 ± 0.07 | 9.69 ± 0.49 | 0.82 ± 0.03 |
| W7 | < 0.09 | < 0.11 | 0.20 ± 0.04 | > 0.27 |
| W9 | 22.10 ± 0.07 | 30.34 ± 0.11 | 158.6 ± 7.9 | 0.68 ± 0.02 |
| D09-R1 | 0.82 ± 0.07 | 0.96 ± 0.07 | 0.85 ± 0.14 | −0.01 ± 0.07 |
| D09-R2 | 0.54 ± 0.06 | 0.59 ± 0.07 | 0.51 ± 0.07 | −0.03 ± 0.07 |
| Source | FluxFULLCONCAT (mJy) | FluxALMA (mJy) | Spectral index (α) | |
| W15 | 1.65 ± 0.09 | < 0.10 | < −1.15 | |
| W10 | 0.16 ± 0.05 | < 0.15 | < −0.04 | |
| W18 | 0.36 ± 0.06 | < 0.127 | < −0.43 | |
| W19 | 0.08 ± 0.03 | < 0.104 | < 0.10 | |
| W1031 | 0.90 ± 0.05 | < 0.09 | < −0.95 | |
| W1056 | 0.09 ± 0.02 | < 0.100 | < 0.02 | |
Notes. Top panel shows spectral indices and index limits derived from TAPERALMA, TAPER5, and TAPER9 for stellar sources with an ALMA detection. For extended sources, core fluxes are used. Detection limits on ATCA data were measured by determining the rms, σ, in the local area of each source that was not detected, using a surrounding circular region of six arcseconds, and taking flux density limits as 3σ. Bottom panel shows spectral index limits using flux densities from FULLCONCAT dataset for stellar sources with no ALMA detection. Millimetre flux limits are taken from Table A.2 of F18, where the detection limit is 3σ, with σ the rms from a circular region of two arcseconds around the optical positions of the stars.
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