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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 (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:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 39 2600 List of the assigned transitions for the ground state rotational spectrum of vinyl formate
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
Bytes Format Units Label Explanations
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
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.
History: From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 16-Feb-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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