J/ApJS/162/428 n-propanol transition frequencies (Maeda+, 2006)
The millimeter- and submillimeter-wave spectrum of the Gt conformer of
n-propanol (n-CH3CH2CH2OH).
Maeda A., De Lucia F.C., Herbst E., Pearson J.C., Riccobono J., Trosell E.,
Bohn R.K.
<Astrophys. J. Suppl. Ser., 162, 428-435 (2006)>
=2006ApJS..162..428M 2006ApJS..162..428M
ADC_Keywords: Atomic physics
Keywords: astrochemistry - methods: laboratory - molecular data
Abstract:
As part of our continuing spectroscopic program of measuring the
rotational spectra of large gas-phase molecules that may exist in
observable quantities in the interstellar medium, we have studied the
millimeter- and submillimeter-wave spectrum of the alcohol n-propanol
(n-CH3CH2CH2OH), a straight-chain molecule with one more carbon
atom than ethanol, which has already been detected in hot molecular
cores. Although the molecule is thought to exist in five different
conformers, we have only studied what is most likely to be the
Gauche-trans (Gt) conformer, and analyzed over 2800 lines through
375GHz in frequency.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 61 4347 Assigned and fitted transition frequencies of
the Gauche-trans conformer of n-propanol in
the vibrational ground state
table3.dat 69 6624 Predicted transition frequencies of the
Gauche-trans conformer of n-propanol in the
vibrational ground state
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- J0 The upper J quantum number
5- 7 I3 --- Ka0 The upper Ka quantum number
9- 11 I3 --- Kc0 The upper Kc quantum number
13- 15 I3 --- J1 The lower J quantum number
17- 19 I3 --- Ka1 The lower Ka quantum number
21- 23 I3 --- Kc1 The lower Kc quantum number
25- 37 F13.4 MHz Freq The experimental frequency of the transition
38- 40 A3 --- Blend [B] Flag for blended transition (1)
42- 48 F7.4 MHz O-C The observed minus calculated value
50- 58 F9.3 MHz e_Freq Estimated experimental uncertainty in Freq
60- 61 A2 --- Lab The source of measurement (2)
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Note (1): A "B" indicates components of an unresolved blend of lines with
different quantum numbers, in which case both transitions are
included in the fit with appropriate weights deduced from the
predicted line intensity.
Note (2): Source of measurement, defined as follows:
a = Fourier transform (this work)
b = NASA, (White 1975, NASA Tech. Note D-7904, 121)
c = J.P.L. (this work)
d = FASSST (Fast Scan Submillimeter-wave Spectroscopic Technique, this work)
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- J0 The upper J quantum number
5- 7 I3 --- Ka0 The upper Ka quantum number
9- 11 I3 --- Kc0 The upper Kc quantum number
13- 15 I3 --- J1 The lower J quantum number
17- 19 I3 --- Ka1 The lower Ka quantum number
21- 23 I3 --- Kc1 The lower Kc quantum number
25- 37 F13.4 MHz Freq The frequency of the transition
39- 47 F9.4 MHz e_Freq Estimated uncertainty in Freq
49- 57 F9.3 D+2 S.mu2 Line strength times µG2
59 A1 --- G [abc] Dipole moment component label (1)
61- 69 F9.3 K Eu/k Upper state energy, expressed in Kelvins
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Note (1): Dipole moment, measured in Debye (D), defined as follows:
a = µa=0.32D.
b = µb=1.23D.
c = µc=0.94D.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 08-Jan-2007