Table 2
List of molecular species and transitions observed with HIFI in L1157 B2 and R.
| Transition | ν0a | Eua | HPBW | Tpeak | rmsb | Vpeak | Vmax | Vmin | FWHM | Fint |
| (MHz) | (K) | (″) | (mK) | (mK) | (km s-1) | (km s-1) | (km s-1) | (km s-1) | (mK km s-1) | |
|
|
||||||||||
| Bow-shock B2 | ||||||||||
| HCO+ (6−5) | 535 061.40 | 90 | 37 | 19(2)c | 3 | +2.2(0.1)c | +7 | –2 | 3.3(0.3)c | 67(6)c |
| CH3OH-E (111,10 − −101,9) | 536 191.07 | 169 | 37 | 10(2)c | 3 | +1.6(0.3)c | +7 | –4 | 4.3(0.7)c | 48(6)c |
| C18O (5−4) | 548 830.97 | 79 | 37 | 24.3(2)c | 3 | +2.4(0.1)c | +5 | –0 | 2.5(0.3)c | 66(3)c |
| NH3 (10 − 00) | 572 498.07 | 28 | 38 | 83.6(8)c | 8 | +0.9(0.2)c | +7 | –6 | 6.2(0.4)c | 549(31)c |
| 13CO (10−9) | 1 101 349.65 | 291 | 21 | – | 20 | – | – | – | – | – |
| Bow-shock R | ||||||||||
| NH3 (10 − 00) | 572 498.07 | 28 | 38 | 28(8) | 8 | +6.6(1.0) | +9 | –0 | – | 105(9) |
Notes. Peak velocity, intensity (in TA scale), integrated intensity (not corrected for beam efficiency, Fint), minimum and maximum velocities (Vmin, Vmax), and linewidth (FWHM) are reported.
Frequencies and spectroscopic parameters have been extracted from the Jet Propulsion Laboratory molecular database (Pickett et al. 1998).
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