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J/A+A/459/317       Line Frequencies for Uracil              (Bruenken+, 2006)

Improved line frequencies for the nucleic acid base uracil for a radioastronomical search. Bruenken S., McCarthy M.C., Thaddeus P., Godfrey P.D., Brown R.D. <Astron. Astrophys. 459, 317 (2006)> =2006A&A...459..317B
ADC_Keywords: Atomic physics ; Spectroscopy Keywords: ISM: molecules - line: identification - molecular data - astrochemistry - ISM: lines and bands - radio lines: ISM Abstract: We report new laboratory spectroscopic data on the nucleic acid uracil. The dataset has been extended both into the microwave and towards mm-wavelengths with the aim to provide accurate transition rest frequencies for astrophysical searches. The complete experimental linelist used for the analysis of the data is compiled in Table 2. Lines marked with an asterisk are taken from Brown et al. (1988, J. Mol. Struct. 190, 185 and J. Am. Chem. Soc. 110, 2329), all other lines have been measured in this work. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 53 407 Transitions in uracil (2,4-pyrimidinediol, molecular formula C4H4N2O2)
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 2 I2 --- J' J quantum number upper level 4- 5 I2 --- Ka' Ka quantum number upper level 7- 8 I2 --- Kc' Kc quantum number upper level 10 I1 --- Itot' ? Itot quantum number upper level 12 I1 --- F' ? F quantum number upper level 14 A1 --- --- [-] 16- 17 I2 --- J" J quantum number lower level 19- 20 I2 --- Ka" Ka quantum number lower level 22- 23 I2 --- Kc" Kc quantum number lower level 25 I1 --- Itot" ? Itot quantum number lower level 27 I1 --- F" ? F quantum number lower level 29- 37 F9.3 MHz Freq Transition frequency 39- 43 F5.3 MHz e_Freq Experimental frequency uncertainty 45- 51 F7.4 MHz O-C Difference observed to calculated frequency 53 A1 --- r_Freq [*] Measured by Brown et al. (1988, J. Mol. Struct. 190, 185 and J. Am. Chem. Soc. 110, 2329)
Acknowledgements: S. Bruenken, sbruenken(at)
(End) Patricia Vannier [CDS] 08-Aug-2006
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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