J/ApJ/832/42 Rotational spectrum of vinyl formate (CH2=CHOCHO) (Alonso+, 2016)
Millimeter wave spectrum and astronomical search for vinyl formate.
Alonso E.R., Kolesnikova L., Tercero B., Cabezas C., Alonso J.L.,
Cernicharo J., Guillemin J.-C.
<Astrophys. J., 832, 42-42 (2016)>
=2016ApJ...832...42A 2016ApJ...832...42A (SIMBAD/NED BibCode)
ADC_Keywords: Spectra, millimetric/submm ; Atomic physics
Keywords: catalogs; ISM: molecules; molecular data; techniques: spectroscopic
Abstract:
Previous detections of methyl and ethyl formate make other small
substituted formates potential candidates for observation in the
interstellar medium. Among them, vinyl formate is one of the simplest
unsaturated carboxylic ester. The aim of this work is to provide
direct experimental frequencies of the ground vibrational state of
vinyl formate in a large spectral range for astrophysical use. The
room-temperature rotational spectrum of vinyl formate has been
measured from 80 to 360GHz and analyzed in terms of Watson's semirigid
rotor Hamiltonian. Two thousand six hundred transitions within J=3-88
and Ka=0-28 were assigned to the most stable conformer of vinyl
formate and a new set of spectroscopic constants was accurately
determined. Spectral features of vinyl formate were then searched for
in Orion KL, Sgr B2(N), B1-b, and TMC-1 molecular clouds. Upper limits
to the column density of vinyl formate are provided.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 39 2600 List of the assigned transitions for the ground
state rotational spectrum of vinyl formate
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See also:
J/A+A/587/L4 : Methyl isocyanate in Orion (Cernicharo+, 2016)
J/A+A/577/A91 : Millimeter wave spectrum of vinyl acetate (Kolesnikova+, 2015)
J/A+A/572/A44 : Vibrationally excited vinyl cyanide in Orion-KL (Lopez+, 2014)
J/A+A/568/A58 : HCOO13CH3 rotational spectrum (Haykal+, 2014)
J/A+A/559/A47 : Sgr B2(N) and Sgr B2(M) IRAM 30m line survey (Belloche+, 2013)
J/ApJ/779/119 : HCOOCH2D detection in Orion KL (Coudert+, 2013)
J/ApJ/770/L13 : Detection of CH3COOCH3 in Orion (Tercero+, 2013)
J/ApJ/768/81 : Ethyl cyanide, CH3CH2CN, vibrational states (Daly+, 2013)
J/A+A/538/A119 : Spectrum of HCO18OCH3 (Tercero+ 2012)
J/A+A/532/A32 : HCOOCH3 map of Orion-KL (Favre+, 2011)
J/ApJ/714/1120 : Rotational spectrum and DCOOCH3 in Orion (Margules+, 2010)
J/A+A/500/1109 : Rotational spectrum of HCOO13CH3 (Carvajal+, 2009)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- J0 [4/88] The J' quantum number
4- 5 I2 --- Ka0 [0/28] The Ka' quantum number
7- 8 I2 --- Kc0 [0/82] The Kc' quantum number
10- 11 I2 --- J1 [4/88] The J" quantum number
13- 14 I2 --- Ka1 [0/28] The Ka" quantum number
16- 17 I2 --- Kc1 [0/83] The Kc" quantum number
19- 28 F10.3 MHz nu [80199/359818] Observed frequency (1)
30- 32 I3 kHz e_nu [50/250] Uncertainty in nu
34- 39 F6.3 MHz O-C [-0.11/0.1] Observed minus calculated frequency
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Note (1): Spectral lines containing two or more unresolved transitions were
excluded from the fit if the difference of predicted frequencies of
individual transitions is larger than 30kHz. If their difference is
less than 30kHz, only one transition was assigned to the observed
line.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 16-Feb-2017