Glycolaldehyde and ethanol toward the L1157 outflow: Resolved images and constraints on glycolaldehyde formation

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Table 2

Derived properties of the detected line emission in the different shocked regions.

Region (age)	Species	Transition	RMS (1σ) (mK)	$\int_{- 10 {k m s}^{- 1}}^{5 {k m s}^{- 1}} T_{B} d v$ $\int_{-10\, \rm{km\, s}^{-1}}^{5\,\rm{km\, s}^{-1}} T_{\rm B} dv$ (K km s⁻¹)
	CH₂OHCHO	8_0,8−7_1,7	1.6	0.11 ± 0.03
B0	CH₂OHCHO	8_1,8−7_0,7	1.7	<0.05
900 yr	CH₂OHCHO	10_1,10−9_0,9	2.2	0.15 ± 0.04
	C₂H₅OH	7_0,7−6_1,6, anti	2.2	0.18 ± 0.04
	CH₂OHCHO	8_0,8−7_1,7	2.6	0.12 ± 0.04
B1	CH₂OHCHO	8_1,8−7_0,7	2.3	<0.07
1500 yr	CH₂OHCHO	10_1,10−9_0,9	2.4	0.13 ± 0.04
	C₂H₅OH	7_0,7−6_1,6, anti	2.5	0.21 ± 0.04
	CH₂OHCHO	8_0,8−7_1,7	2.9	0.18 ± 0.05
B2	CH₂OHCHO	8_1,8−7_0,7	2.6	0.14 ± 0.04
2300 yr	CH₂OHCHO	10_1,10−9_0,9	2.8	0.24 ± 0.05
	C₂H₅OH	7_0,7−6_1,6, anti	2.8	0.21 ± 0.05

Notes. The first column lists the shocked regions; the second and third columns list the species and observed transitions (Table 1); the fourth and fifth columns report the measured RMS (measured over a 2 MHz-wide channel) and velocity-integrated (between −10 and +5 km/s) line intensities. Note that the upper limits are given at 3σ.

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