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Home All issues Volume 499 / No 1 (May III 2009) A&A, 499 1 (2009) 215-232 Full HTML
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Table 3:

Transitions of the anti-conformer of ethyl formate detected toward Sgr B2(N) with the IRAM 30 m telescope.
Na Transition Frequency Unc.b $E_{\rm l}$c $S\mu^2$ $\sigma^d$ Fe $\tau^f$ $I_{{\rm obs}}$g $I_{{\rm mod}}$g $I_{{\rm all}}$g Comments
    (MHz) (kHz) (K) (D2) (mK)     (K km s-1) (K km s-1)  
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13)
1 15 2,14-14 2,13 81 779.567 4 30 51 13 1 0.05 0.52(06) 0.32 0.44 blend with U-line
16 15 6,10-14 6, 9 82 351.854 4 54 43 19 2 0.07 1.02(08) 0.44 0.55 partial blend with C2H5CN,
                        $\varv_{13}$ = 1/ $\varv_{21}$ = 1 and U-line
17 15 6, 9-14 6, 8 82 351.858 4 54 43 19 2 - - - - -
26 15 2,13-14 2,12 84 081.357 4 31 51 19 3 0.05 0.53(08) 0.35 0.42 partial blend with CH3CH3CO, $\varv_t$ = 1
28 16 0,16-15 0,15 85 065.106 4 31 55 22 4 0.06 0.73(10) 0.39 0.57 partial blend with c-C2H4O
44 16 8, 8-15 8, 7 87 810.372 4 78 41 17 5 0.05 1.28(07) 0.40 1.22 partial blend with CH2(OH)CHO
                        and C2H5CN
45 16 8, 9-15 8, 8 87 810.372 4 78 41 17 5 - - - - -
46 16 7, 9-15 7, 8 87 826.665 4 67 44 17 6 0.06 0.99(07) 0.48 0.86 partial blend with HNCO, $\varv_5$ = 1
47 16 7,10-15 7, 9 87 826.665 4 67 44 17 6 - - - - -
53 16 3,14-15 3,13 87 993.944 4 38 53 19 7 0.05 1.01(08) 0.39 0.64 partial blend with CH3CH3CO
                        and U-line
54 16 4,12-15 4,11 88 001.562 4 43 51 19 8 0.05 0.66(08) 0.35 0.62 blend with C2H5CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
73 1710, 7-1610, 6 93 284.077 4 108 38 22 9 0.04 0.07(09) 0.33 0.35 uncertain baseline
74 1710, 8-1610, 7 93 284.077 4 108 38 22 9 - - - - -
75 17 9, 8-16 9, 7 93 292.297 4 94 42 22 10 0.05 0.56(09) 0.42 0.50 uncertain baseline
76 17 9, 9-16 9, 8 93 292.297 4 94 42 22 10 - - - - -
77 17 8, 9-16 8, 8 93 304.955 4 82 45 22 11 0.06 0.96(09) 0.51 0.67 partial blend with U-line
78 17 8,10-16 8, 9 93 304.955 4 82 45 22 11 - - - - -
79 17 7,11-16 7,10 93 324.728 4 71 48 22 12 0.07 1.32(09) 0.60 0.74 partial blend with U-lines
80 17 7,10-16 7, 9 93 324.728 4 71 48 22 12 - - - - -
81 17 6,12-16 6,11 93 356.821 4 62 51 22 13 0.08 1.68(10) 0.70 1.24 blend with CH3CH3CO and U-line?
82 17 6,11-16 6,10 93 356.838 4 62 51 22 13 - - - - -
83 17 5,13-16 5,12 93 412.160 4 54 53 22 14 0.08 1.12(10) 0.79 0.85 partial blend with U-line?
84 17 5,12-16 5,11 93 413.168 4 54 53 22 14 - - - - -
86 17 4,14-16 4,13 93 504.972 4 47 55 24 15 0.05 1.47(10) 0.44 0.87 blend with CH318OH
87 17 4,13-16 4,12 93 539.303 4 47 55 24 16 0.05 0.84(10) 0.44 0.45 no blend
94 1815, 3-1715, 2 98 760.931 5 202 19 18 17 0.04 0.87(09) 0.68 0.78 blend with U-line
95 1815, 4-1715, 3 98 760.931 5 202 19 18 17 - - - - -
96 1814, 4-1714, 3 98 761.079 5 181 24 18 17 - - - - -
97 1814, 5-1714, 4 98 761.079 5 181 24 18 17 - - - - -
98 1816, 2-1716, 1 98 761.555 5 224 13 18 17 - - - - -
99 1816, 3-1716, 2 98 761.555 5 224 13 18 17 - - - - -
100 1813, 5-1713, 4 98 762.218 5 162 30 18 17 - - - - -
101 1813, 6-1713, 5 98 762.218 5 162 30 18 17 - - - - -
102 1817, 1-1717, 0 98 762.790 5 248 7 18 17 - - - - -
103 1817, 2-1717, 1 98 762.790 5 248 7 18 17 - - - - -
104 1812, 6-1712, 5 98 764.650 5 144 34 18 17 - - - - -
105 1812, 7-1712, 6 98 764.650 5 144 34 18 17 - - - - -
118 18 5,14-17 5,13 98 928.453 4 58 57 18 18 0.07 2.37(09) 0.96 2.23 blend with C2H5CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
119 18 5,13-17 5,12 98 930.153 4 58 57 18 18 - - - - -
160 20 1,20-19 1,19 105 234.713 5 49 68 28 19 0.07 1.66(11) 0.76 1.27 blend with C2H5OH and CH3OCHO
161 19 1,18-18 1,17 105 272.047 5 47 65 28 20 0.07 2.07(11) 0.73 0.81 blend with U-lines
162 19 3,16-18 3,15 105 447.141 5 52 64 37 21 0.06 1.07(15) 0.69 1.07 no blend
165 20 2,19-19 2,18 108 552.378 100 53 68 20 22 0.07 2.05(08) 0.79 1.24 partial blend with C2H3CN, $\varv_{15}$ = 1
                        and U-lines
233 21 6,16-20 6,15 115 395.797 5 81 66 60 23 0.11 2.94(23) 1.37 1.37 partial blend with U-line
234 21 6,15-20 6,14 115 395.986 5 81 66 60 23 - - - - -
238 22 1,22-21 1,21 115 595.764 5 59 75 79 24 0.08 -0.05(30) 0.99 2.22 blend with CH3CH3CO, $\varv_t$ = 1,
                        uncertain baseline
Notes: a Numbering of the observed transitions associated with a modeled line stronger than 20 mK (see Table 1). b Frequency uncertainty. c Lower energy level in temperature units ( $E_{\rm l}/k_{{\rm B}}$). d Calculated rms noise level in $T_{{\rm mb}}$ scale. e Numbering of the observed features. f Peak opacity of the modeled feature. g Integrated intensity in $T_{{\rm mb}}$ scale for the observed spectrum (Col. 10), the ethyl formate model (Col. 11), and the model including all molecules (Col. 12). The uncertainty in Col. 10 is given in parentheses in units of the last digit.

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