Table 2
Orion-KL molecular components.
| Component | RAJ2000 | DecJ2000 | Size | νLSR | Δv | TKin | n(H2) | N(H2) |
| 05h35m... | −05°22′... | (arcsec) | (km s-1) | (km s-1) | (K) | (cm-3) | (cm-2) | |
|
|
||||||||
| extended ridge | 14 6 |
21.̋5 | ~180 | 8–10 | 2.5–5 | 40–60 | ~1 × 105 | 7.1 × 1022 |
| plateau | 14516 |
30.̋59 | 20–30 | 5–10 | 20 | 95–150 | 1–10 × 106 | 1.8 × 1023 |
| hot core | 146 |
31.̋0 | 5–10 | 4–6 | 5–15 | 150–400 | 1–10 × 107 | 3.1–10 × 1023 |
| hot core (peak) | 7.3 × 108 | 5.4 × 1024 | ||||||
| compact ridge/MF1 | 1409 |
36.̋9 | 5–15 | 7–9 | 1–2 | 80–150 | 1–10 × 106 | 3.9 × 1023 |
| compact ridge (peak) | 6.8 × 108 | 5.0 × 1024 | ||||||
| IRc7 | 1426 |
31.̋29 | ~2 | −2– 8 | 2.5–5 | ~160 | – | – |
| IRc21 | 14557 |
27.̋13 | ~2 | ~6 | 2.5 | ~160 | – | – |
| MF2 | 1444 |
34.̋4 | ~2 | 3–17 | 2.5–6 | 100–150 | 4.2 × 108 | 3.1 × 1024 |
| MF4/IRc20 | 14132 |
29.̋3 | ~2 | 7–14 | 2–8 | ~100 | 2.2 × 108 | 1.6 × 1024 |
| MF5/IRc6 | 14158 |
27.̋83 | ~2 | 6.5–13 | 2.5–6 | ~100 | 2.2 × 108 | 1.6 × 1024 |
| MF10/IRc2 | 1463 |
28.̋9 | ~2 | -3–7 | 3–5 | 150–200 | – | – |
| MF12/IRc4 | 14188 |
34.̋44 | ~2 | 0–11 | 2–5 | 100–150 | – | – |
| EGP | 1447 |
33.̋17 | ~2 | −7–12 | 3–6 | 100–140 | – | – |
Notes. For further details see Irvine et al. (1987), Blake et al. (1987), and Favre et al. (2011a). Extended Ridge and Plateau are quoted for completeness but not discussed in this paper, their positions are simply given as those of Orion KL and Source I, respectively. All other source positions and sizes are from this paper or from Favre et al. (2011a) except EGP = ethylene glycol peak from Brouillet et al. (2015). Peak densities and column densities for the HC and the CR and for some of the MF peaks are measured in a 1.8′′ × 0.8′′ beam (Favre et al. 2011a) but should be considered cautiously. Our positions of IRc7 and IRc21 are closer to the positions of C23 and C13 sources of Friedel & Weaver (2011) than to the IRc positions of Shuping et al. (2004) while they are probably the same objects, respectively.
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