J/A+A/398/L11 Vinylacetylene millimeter-wave spectrum (Thorwirth+, 2003)
The millimeter-wave spectrum and the dipole moment of vinylacetylene.
Thorwirth S., Lichau H.
<Astron. Astrophys. 398, L11 (2003)>
=2003A&A...398L..11T 2003A&A...398L..11T
ADC_Keywords: Atomic physics
Keywords: molecular data - methods: laboratory - techniques: spectroscopic -
stars: AGB and post-AGB
Abstract:
The pure rotational spectrum of the hydrocarbon vinylacetylene in its
ground vibrational state has been investigated from 80 to 165 GHz,
covering the rotational quantum numbers 8≤J=<18 and 0≤Ka≤17, n
order to provide accurate rest frequencies for radioastronomical
searches. Moreover, quantum chemical calculations of the dipole moment
components µa and µb have been performed leading to the result
µa∼0.4D. The value for the dipole moment component µb is very
low and lies in the range of several thousandth to a few hundredth of
a Debye.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 107 172 Laboratory spectroscopic data
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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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3- 4 I2 --- J' Quantum number J' of the respective transitions
in the form J' Ka' Kc' - J" Ka" Kc"
6- 7 I2 --- Ka' Quantum number Ka' of the respective transitions
in the form J' Ka' Kc' - J" Ka" Kc"
9- 10 I2 --- Kc' Quantum number Kc' of the respective transitions
in the form J' Ka' Kc' - J" Ka" Kc"
12- 13 I2 --- J" Quantum number J" of the respective transitions
in the form J' Ka' Kc' - J" Ka" Kc"
15- 16 I2 --- Ka" Quantum number Ka" of the respective transitions
in the form J' Ka' Kc' - J" Ka" Kc"
18- 19 I2 --- Kc" Quantum number Kc" of the respective transitions
in the form J' Ka' Kc' - J" Ka" Kc"
28- 39 F12.5 MHz FreqExp Newly obtained experimental transition frequency
42- 53 F12.5 MHz FreqCal Calculated transition frequency obtained by the
least squares fit
57- 64 F8.5 MHz Res Residuals (obs.-calc.) for resolved lines as
well as the differences of two single lines
to the intensity weighted average of the
unresolved asymmetry doublet (cf. column 7).
69- 75 F7.5 --- Err Experimental uncertainties attributed to the
lines.
78- 89 F12.5 MHz FreqCalw ? Intensity weighted average of the unresolved
asymmetry doublets
93-100 F8.5 MHz Resw ? (Obs.-Calc) for the intensity weighted
average. Relevant number for unresolved
asymmetry doublets in the fit.
102-107 F6.4 --- WT ? Intensity weight of a given transition.
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Acknowledgements: Sven Thorwirth
(End) Patricia Bauer [CDS] 19-Dec-2002