Rotational spectroscopy, tentative interstellar detection, and chemical modeling of N-methylformamide

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Volume 601 (May 2017)

A&A, 601 (2017) A49

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This article has an erratum: [https://doi.org/10.1051/0004-6361/201935428e]

Table 4

Partition functions of N-methylformamide and acetamide.

	CH₃NHCHO		CH₃CONH₂
T	Q_tr ^a	Q_v ^b	Q_tr ^a	Q_v ^b
(K)

10	365.16247	1.00000	359.18058	1.00000
20	1189.23944	1.00000	1272.66459	1.00000
30	2488.15240	1.00000	2766.98655	1.00000
40	4317.90735	1.00008	4871.11731	1.00009
50	6701.57116	1.00058	7590.48345	1.00058
60	9648.68076	1.00224	10 925.10798	1.00205
70	13 164.31826	1.00592	14 874.85986	1.00508
80	17 251.81144	1.01233	19 439.98556	1.01017
90	21 913.57312	1.02193	24 620.89439	1.01769
100	27 151.45535	1.03496	30 418.00805	1.02792
110	32 966.94532	1.05150	36 831.70759	1.04108
120	39 361.28161	1.07156	43 862.32239	1.05734
130	46 335.51849	1.09509	51 510.12815	1.07686
140	53 890.55428	1.12204	59 775.34167	1.09979
150	62 027.13560	1.15237	68 658.10939	1.12626
160	70 745.84645	1.18606	78 158.49050	1.15642
170	80 047.08923	1.22311	88 276.43644	1.19042
180	89 931.06287	1.26356	99 011.76908	1.22844
190	100 397.74181	1.30747	110 364.15950	1.27064
200	111 446.85817	1.35493	122 333.10876	1.31725
210	123 077.88845	1.40605	134 917.93177	1.36849
220	135 290.04535	1.46097	148 117.74490	1.42463
230	148 082.27451	1.51987	161 931.45737	1.48594
240	161 453.25592	1.58293	176 357.76649	1.55275
250	175 401.40932	1.65036	191 395.15645	1.62543
260	189 924.90280	1.72242	207 041.90022	1.70434
270	205 021.66401	1.79936	223 296.06409	1.78994
280	220 689.39314	1.88148	240 155.51446	1.88269
290	236 925.57717	1.96908	257 617.92629	1.98311
300	253 727.50471	2.06251	275 680.79287	2.09175
310	271 092.28113	2.16213	294 341.43638	2.20925
320	289 016.84348	2.26834	313 597.01910	2.33626
330	307 497.97493	2.38156	333 444.55472	2.47352

Notes.

^(a)

Q_tr is the torsional-rotational partition function. It does not take the hyperfine splitting into account.

^(b)

Q_v is the vibrational partition function. The total partition function of the molecule (without hyperfine splitting) is Q_tr × Q_v.

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