Table 3
Total ice and gas column densities (N) and fractional abundances (X) relative to H2 towards the Coronet cluster members.
| Object |  (a) (1018 cm−2) |
 (1017 cm−2) |
 (b) (1015 cm−2) |
 (d) (1023 cm−2) |
 (10−5) |
 (10−6) |
 (10−8) |
|---|---|---|---|---|---|---|---|
| IRS5A | 3.58 ± 0.26 | 2.36 ± 0.57 | 0.05 ± 0.02(c) | 0.55 ± 0.06 | 6.51 ± 0.80 | 4.29 ± 1.12 | 0.09 ± 0.04 |
| HH100 IRS1 | 2.45 ± 0.24 | <2.38 | 0.07 ± 0.03(c) | 0.67 ± 0.07 | 3.66 ± 0.51 | <3.55 | 0.10 ± 0.05 |
| SMM1C | − | − | 1.95 ± 0.23 | 1.58 ± 0.16 | − | − | 1.23 ± 0.19 |
| IRS7A | 10.89 ± 1.92 | <4.14 | 1.28 ± 0.15 | 1.48 ± 0.15 | 7.36 ± 1.49 | <2.98 | 0.86 ± 0.13 |
| SMM1A | − | − | 3.54± 0.43 | 1.90 ± 0.19 | − | − | 1.86 ± 0.29 |
| IRS7B | 11.01 ± 1.97 | 7.49 ± 0.33 | 1.91 ± 0.23 | 1.92 ± 0.19 | 5.73 ± 1.18 | 3.90 ± 0.43 | 0.99 ± 0.16 |
| SMM2 | − | − | 1.64 ± 0.20 | 1.09 ± 0.11 | − | − | 1.50 ± 0.24 |
Notes. (a) Boogert et al. (2008). (b)CH3OH column densities calculated using Trot = 30 K.(c) Lindberg et al. (2015). (d) H2 column densities assuming Tdust = 30 K. The errors on the H2 column densities are estimated from the 10% flux calibration uncertainty at 850 µm. The ‘–’ symbol indicates the sources for which ice column densities and abundances are not available.
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