Table 1
Properties of the detected transitions from SiO, 29SiO, and 30SiO in L1157-B1 (single-dish ASAI+CHESS spectra).
| Line | Frequency(a) | Eup | HPBW | rms | Vpeak | Tmb-peak | ∫ TmbdV [−23, −13] | [−13, −3] | [−3, +5] |
|---|---|---|---|---|---|---|---|---|---|
| MHz | (K) | (″) | (mK) | (km s−1) | (K) | (K km s−1) | (K km s−1) | (K km s−1) | |
| SiO | |||||||||
| 2–1 | 86 846.96 | 6 | 28 | 2 | –1.6 | 1.72 | 1.51 ± 0.01 | 8.22 ± 0.01 | 9.60 ± 0.01 |
| 3–2 | 130 268.61 | 13 | 19 | 9 | –0.2(b) | 2.86 | 1.93 ± 0.03 | 12.13 ± 0.03 | 17.41 ± 0.03 |
| 5–4 | 217 104.98 | 31 | 11 | 3 | –1.6 | 2.51 | 2.58 ± 0.01 | 13.03 ± 0.01 | 15.11 ± 0.01 |
| 6–5 | 260 518.02 | 44 | 9 | 5 | –1.6 | 1.69 | 1.66 ± 0.02 | 8.93 ± 0.02 | 9.37 ± 0.02 |
| 8–7 | 347 330.59 | 75 | 7 | 17 | –1.6 | 0.93 | 0.83 ± 0.06 | 5.75 ± 0.06 | 4.49 ± 0.06 |
| 12–11(c) | 520 881.09 | 163 | 41 | 13 | –1.6 | 0.04 | <0.05 | 0.17 ± 0.05 | 0.06 ± 0.04 |
| 29SiO | |||||||||
| 2–1 | 85 759.20 | 6 | 29 | 1 | –1.6 | 0.19 | 0.12 ± 0.01 | 0.74 ± 0.01 | –(c) |
| 3–2 | 128 637.05 | 12 | 19 | 10 | –1.6 | 0.24 | 0.18 ± 0.04 | 1.03 ± 0.04 | 1.34 ± 0.03 |
| 5–4 | 214 385.75 | 31 | 11 | 3 | –1.6 | 0.16 | 0.11 ± 0.01 | 0.72 ± 0.01 | 0.83 ± 0.01 |
| 6-5 | 257 255.22 | 43 | 10 | 4 | –1.6 | 0.11 | 0.07 ± 0.02 | 0.46 ± 0.02 | 0.49 ± 0.01 |
| 7–6 | 300 120.47 | 58 | 8 | 10 | –1.6 | 0.05 | <0.04 | 0.25 ± 0.04 | 0.18 ± 0.03 |
| 8–7 | 342 980.84 | 74 | 7 | 25 | – | – | <0.1 | <0.1 | <0.1 |
| 12–11(c) | 514 359.34 | 161 | 41 | 13 | – | – | <0.05 | <0.05 | <0.05 |
| 30SiO | |||||||||
| 2–1 | 84 746.17 | 6 | 29 | 1 | –1.6 | 0.10 | 0.10 ± 0.01 | 0.49 ± 0.01 | 0.52 ± 0.01 |
| 4–3 | 169 486.88 | 20 | 15 | 28 | –1.6 | 0.17 | <0.1 | 0.6 ± 0.1 | 0.7 ± 0.1 |
| 5–4 | 211 853.47 | 31 | 12 | 3 | –1.6 | 0.11 | 0.06 ± 0.01 | 0.53 ± 0.01 | 0.57 ± 0.01 |
| 6–5 | 254 216.66 | 43 | 10 | 3 | –1.6 | 0.08 | 0.07 ± 0.01 | 0.35 ± 0.01 | 0.39 ± 0.01 |
| 12–11(d) | 508 285.78 | 159 | 42 | 12 | – | – | <0.05 | <0.05 | <0.05 |
Notes. (a) Müller et al. (2013). (b) The velocity difference between the 3–2 28SiO transition and all other transitions reported here is only one velocity channel, hence we consider its velocity in accordance with the others. (c) The integrated intensity at low velocities of the 2−1 transition of29SiO is not reported here because the line is blended with the 41,3 –3−2,2 transition of 13 CH3OH. (d) The 12− 11 transitions are taken with Herschel-HIFI (LP CHESS). All the other spectra are taken with the IRAM 30 m (LP ASAI).
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