Acetone in Orion BN/KL - High-resolution maps of a special oxygen-bearing molecule

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Table A.3

(CH₃)₂CO measurements toward Ace-3.

Frequency	Transition	T _B	V _LSR	ΔV		Comment
(MHz)	(J_{k_a,k_c})	(K)	(km s^-1)	(km s^-1)	(K km s^-1)

101 297.450	24_13,12 − 24_12,13 EE	0.20 ± 0.05	7.31 ± 1.85	5.55 ± 1.85	1.43 ± 0.63
101 426.664	9_1,8 − 8_2,7 AE	0.72 ± 0.05	6.82 ± 1.85	7.10 ± 1.86	5.78 ± 0.46
101 426.759	9_1,8 − 8_2,7 EA
101 427.041	9_2,8 − 8_1,7 AE
101 427.130	9_2,8 − 8_1,7 EA
101 451.059	9_1,8 − 8_2,7 EE	1.47 ± 0.05	6.89 ± 1.85	5.94 ± 1.85	9.79 ± 0.38
101 451.446	9_2,8 − 8_1,7 EE	1.47 ± 0.05	6.89 ± 1.85	5.94 ± 1.85	9.79 ± 0.38
101 475.332	9_1,8 − 8_2,7 AA	1.72 ± 0.05	6.59 ± 1.85	5.55 ± 1.85	9.63 ± 0.48	Partially blended¹
101 475.734	9_2,8 − 8_1,7 AA	1.72 ± 0.05	6.59 ± 1.85	5.55 ± 1.85	9.63 ± 0.48	Partially blended¹
203 336.247	27_4,23 − 27_3,24 EA	<1.2	...	...	<2.2
	27_5,23 − 27_4,24 EA
203 336.291	27_4,23 − 27_4,24 AE
	27_5,23 − 27_3,24 AE
223 512.409	16_8,9 − 15_7,8 EE	<0.4	...	...	<1.2
223 621.690	16_8,9 − 15_7,8 AA	<0.4	...	...	<1.2
223 684.608	17_6,11 − 16_7,10 EA	<0.4	...	...	<1.2	blended²
223 684.610	17_6,11 − 16_7,10 AE	<0.4	...	...	<1.2	blended²
223 692.004	17_7,11 − 16_6,10 EA	<0.4	...	...	<1.2
223 692.104	17_7,11 − 16_6,10 AE	<0.4	...	...	<1.2
223 732.826	12_9,4 − 11_8,4 EE	<0.5	...	...	<1.3	Possibly blended³
223 767.585	17_6,11 − 16_7,10 EE	1.37 ± 0.35	5.02 ± 0.84	1.73 ± 0.86	2.66 ± 0.62	first component
		1.19 ± 0.35	10.00 ± 0.84	1.65 ± 0.86	2.23 ± 0.59	second component
223 775.253	17_7,11 − 16_6,10 EE	1.29 ± 0.35	6.07 ± 0.84	1.51 ± 0.86	2.08 ± 0.55	first component
		0.83 ± 0.35	10.26 ± 0.84	2.86 ± 0.93	2.25 ± 1.00	second component⁴
223 850.417	17_6,11 − 16_7,10 AA	<0.4	...	...	<1.2
223 858.308	17_7,11 − 16_6,10 AA	<0.4	...	...	<1.2
225 744.082	19_4,15 − 18_5,14 EE	<1.2	...	...	<3.6
	19_5,15 − 18_4,14 EE	<1.2	...	...	<3.6
225 811.979	13_9,5 − 12_8,4 EE	<0.2	...	...	<0.6
228 979.750	12_10,2 − 11_9,2 EA	...	...	...	...	Blended⁵
229 033.736	22_1,21 − 21_2,20 AE	1.04 ± 0.33	7.18 ± 0.45	3.20 ± 0.41	3.54 ± 0.53
	22_2,21 − 21_1,20 AE
229 033.771	22_1,21 − 21_1,20 EA
	22_2,21 − 21_2,20 EA
229 041.826	12_10,3 − 11_9,3 EE	<0.5	...	...	<1.5
229 055.797	22_1,21 − 21_2,20 EE	<1.3	...	...	<3.9
	22_1,21 − 21_1,20 EE
	22_2,21 − 21_2,20 EE
	22_2,21 − 21_1,20 EE
229 058.049	14_9,6 − 13_8,5 EE	<0.9	...	...	<2.7
229 077.788	22_1,21 − 21_2,20 AA	1.24 ± 0.39	7.75 ± 0.56	3.00 ± 0.41	3.94 ± 0.59
	22_2,21 − 21_1,20 AA	1.24 ± 0.39	7.75 ± 0.56	3.00 ± 0.41	3.94 ± 0.59

Notes.Acetone spectroscopic data are taken from the JPL database. Upper-state energy E_up/k, effective line strength Sμ², and spin statistical weight g_s are also given. The two velocity components in Ace-3 may be due to an incomplete uv coverage so were measured separately.

⁽¹⁾

Partially blended with the H₂CS 3_1,3 − 2_1,2 line at 101 477.8 MHz.

⁽²⁾

Blended with the U223686.7 line.

⁽³⁾

Possibly blended with the U223733.6 line.

⁽⁴⁾

Possible blended with the ¹³CH₃CH₂CN 26_2,25 − 25_2,24 line at 223 773.5 MHz.

⁽⁵⁾

Blended with the U228979.0 line.

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