Table 4
Optical depth of the silicate absorption feature at a wavelength of 10.2 μm.
| Source | τν(10.2 μm) | ⟨ τν(10.2 μm) ⟩ | σ τ ν |
|
|
|||
| AFGL 2136 | 2.19 | 2.33 | 0.20 |
| AFGL 4176 | 1.94 | 1.82 | 0.29 |
| G305.20+0.21 | 0.50 | 1.71 | 0.76 |
| IRAS 13481-6124 | 0.81 | 1.30 | 0.13 |
| IRAS 17216-3801 | 1.21 | 0.99 | 0.20 |
| M8E-IR | 0.67 | 0.74 | 0.09 |
| M17 UC1 | 2.53 | 1.81 | – |
| Mon R2 IRS2 | 1.40 | 1.27 | 0.05 |
| Mon R2 IRS3 A | 1.77 | 2.65 | 0.17 |
| Mon R2 IRS3 B | 2.59 | 2.69 | 0.06 |
| NGC 2264 IRS1 | 0.42 | 0.35 | – |
| Orion BN | 0.85 | 1.77 | 0.37 |
| R Mon | 0.24 | 0.92 | 0.25 |
| S255 IRS3 | 2.31 | 2.33 | 0.34 |
Notes. The second column shows the depth measured in the spectrum of the total flux (Fig. 2), while the depth in the correlated flux, averaged over all measurements, is shown in the third column. The standard deviation of the depth measured in the correlated flux spectra is shown in the fourth column.
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