Chemical segregation of complex organic O-bearing species in Orion KL

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Table B.1.

Molecular column densities and abundances.

		MF Peak^a			EG Peak^b			ET Peak^c
		α_J2000 = 05^h 35^m 14.102^s, δ_J2000 = −05° 22′ 36.84″			α_J2000 = 05^h 35^m 14.474^s, δ_J2000 = −05° 22′ 33.12″			α_J2000 = 05^h 35^m 14.440^s, δ_J2000 = −05° 22′ 34.74″
		v_lsr = 7.5 km s⁻¹; Δv = 2 km s⁻¹; N(H₂)=8.2×10²³ cm⁻²			v_lsr = 7.5−8.0 km s⁻¹; Δv = 3 km s⁻¹; N(H₂)=2.4×10²⁴ cm⁻²			v_lsr = 7.5−8.0 km s⁻¹; Δv = 3 km s⁻¹; N(H₂)=1.8×10²⁴ cm⁻²

		T_rot (K)	N ×10¹⁵ (cm⁻²)	N/N(H₂) × 10⁻⁹	T_rot (K)	N × 10¹⁵ (cm⁻²)	N/N(H₂) ×10⁻⁹	T_rot (K)	N ×10¹⁵ (cm⁻²)	N/N(H₂) ×10⁻⁹
A.	CH₃OH	50–150–250	1080	1305	50–150–250	1260	540	50–150–250	3240	1800
B.	HCOOCH₃	50–150–250	240	293	150	60	25	50–150–250	240	133
C.	CH₃OCH₃	50–150–250	100	122	150 - 250	60	25	50–150–250	110	61
D.	CH₂OCH₂	150	2.7	3.3	150	2.0	0.8	150	3.3	1.8
E.	CH₃COOCH₃	150	6.0	7.3	150	3.1	1.3	150	6.0	3.3
F.	HCOOCH₂CH₃	150	3.0	3.7	150	2.0	0.8	150	4.0	2.2
G.	CH₃CH₂OCH₃	150	3.0	3.7	150	≤2.0	≤0.8	150	≤2.0	≤1.1
H.	HCOOH	150	0.3	0.4	150	1.5	0.6	150	1	0.6
I.	OHCH₂CH₂OH	150	≤0.3	≤0.4	150	5.3	2.2	150	3.2	1.8
J.	CH₃COOH	150	≤0.4	≤0.5	150	4.5	1.9	150	2	1.1
K.	CH₃CH₂OH	50–150–250	4.0	4.9	50–150–250	7.0	2.9	50–150–250	64	36
L.	CH₃OCH₂OH	150	15	18	150	120	50	150	200	111
M.	OHCH₂CHO	150	≤0.1	≤0.1	150	≤0.3	≤0.1	150	≤0.3	≤0.2
N.	CH₃COCH₃	150	0.5	0.6	50–150–250	4.0	1.7	50–150–250	5.0	2.8

Notes. Rotational temperatures (T_rot), column densities (N), and abundances (N/N(H₂)) inferred towards the MF, EG, and ET peaks in Orion KL.

^(a)

Position in agreement with the MF1 peak of Favre et al. (2011a) and position A of Tercero et al. (2015).

^(b)

Position in agreement with the EG peak of Brouillet et al. (2015) and Favre et al. (2017).

^(c)

Position in agreement with the MF2 peak of Favre et al. (2011a) and position B of Tercero et al. (2015).

A: model for the a-type lines (b-type lines are optically thick); A + E states; ¹²C/¹³C = 45 (Tercero et al. 2010); another component has been included to properly fit the observed line profiles: MF peak: v_LSR = 9.5 km s⁻¹, Δv = 3 km s⁻¹, T_rot = 150 K, N = 1.4 × 10¹⁸ cm⁻²; EG peak: v_LSR = 6.0 km s⁻¹, Δv = 8 km s⁻¹, T_rot = 150 K, N = 1.8 × 10¹⁸ cm⁻²; ET peak: v_LSR = 6.0 km s⁻¹, Δv = 8 km s⁻¹, T_rot = 150 K, N = 9.0 × 10¹⁷ cm⁻².

B: model for the b-type lines (a-type lines are optically thick); A+E states; another component has been included to properly fit the observed line profiles: MF peak: v_LSR = 9.0 km s⁻¹, Δv = 4 km s⁻¹, T_rot = 150 K, N = 1.0 × 10¹⁷ cm⁻²; EG peak: v_LSR = 6.0 km s⁻¹, Δv = 8 km s⁻¹, T_rot = 150 K, N = 6.0 × 10¹⁶ cm⁻².

C: AA + AE + EA + EE states; another component has been included to properly fit the observed line profiles: MF peak: v_LSR = 9.0 km s⁻¹, Δv = 4 km s⁻¹, T_rot = 150 K, N = 3.0 × 10¹⁶ cm⁻².

D: ortho + para symmetry.

E: AA + AE + EA + E3 + E4 states.

F: trans + gauche conformers.

G: AA + AE + EA + EE + EE’ states.

H: trans conformer.

I: (anti-gauche) + (gauche-gauche) conformers.

J: A + E states.

K: trans + gauche conformers; another component has been included to properly fit the observed line profiles: MF peak: v_LSR = 9.0 km s⁻¹, Δv = 4 km s⁻¹, T_rot = 150 K, N = 1.5 × 10¹⁶ cm⁻².

N: AA + AE + EA + EE states; another component has been included to properly fit the observed line profiles: EG peak: v_LSR = 6.0 km s⁻¹, Δv = 8 km s⁻¹, T_rot = 150 K, N = 3.0 × 10¹⁵ cm⁻²; ET peak: v_LSR = 6.0 km s⁻¹, Δv = 8 km s⁻¹, T_rot = 150 K, N = 2.0 × 10¹⁵ cm⁻².

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