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J/ApJS/229/26     Rotational spectra of aminoacetonitrile   (Kolesnikova+, 2017)

Rotational spectra in 29 vibrationally excited states of interstellar aminoacetonitrile. Kolesnikova L., Alonso E.R., Mata S., Alonso J.L. <Astrophys. J. Suppl. Ser., 229, 26-26 (2017)> =2017ApJS..229...26K (SIMBAD/NED BibCode)
ADC_Keywords: Atomic physics ; Spectra, millimetric/submm Keywords: catalogs; ISM: molecules; molecular data; techniques: spectroscopic Abstract: We report a detailed spectroscopic investigation of the interstellar aminoacetonitrile, a possible precursor molecule of glycine. Using a combination of Stark and frequency-modulation microwave and millimeter wave spectroscopies, we observed and analyzed the room-temperature rotational spectra of 29 excited states with energies up to 1000cm-1. We also observed the 13C isotopologues in the ground vibrational state in natural abundance (1.1%). The extensive data set of more than 2000 new rotational transitions will support further identifications of aminoacetonitrile in the interstellar medium. Description: In the present work, new spectroscopic measurements and analysis of aminoacetonitrile have been performed in frequency ranges 26-40GHz, 75-115GHz, and 170-240GHz. Stark-modulation microwave and frequency-modulation millimeter wave spectroscopies made it possible to identify the pure rotational transitions of 29 different excited vibrational states belonging to fundamentals, overtones, and combination states of the low-frequency torsional and bending modes. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table4.dat 67 2352 List of the assigned and fitted transitions for 29 excited vibrational states of the parent species and ground state transitions of two 13C isotopologues of aminoacetonitrile (NH2-CH2-CN)
See also: J/ApJS/209/23 : Aminoacetonitrile transition frequencies (Motoki+, 2013) Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 13 A13 --- Species Species 17- 18 I2 --- J1 [7/40] Upper J quantum number 20- 21 I2 --- Ka1 [0/16] Upper Ka quantum number 23- 24 I2 --- Kc1 [3/38] Upper Kc quantum number 28- 29 I2 --- J0 [6/40] Lower J quantum number 31- 32 I2 --- Ka0 [0/16] Lower Ka quantum number 34- 35 I2 --- Kc0 [2/39] Lower Kc quantum number 39- 49 F11.4 MHz nuObs [75024/239803.2] Observed frequency of the transition 53- 57 F5.3 MHz e_nuObs [0.05/0.5] Uncertainty of the observed frequency 62- 67 F6.3 MHz O-C [-0.3/0.3] Observed minus calculated frequency
History: From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 14-Jun-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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