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J/A+A/543/A46       Submillimeter spectrum of HCOOCD2H        (Coudert+, 2012)
The submillimeter-wave spectrum of the doubly deuterated species of methyl
formate HCOOCD2H.
    Coudert L.H., Margules L., Huet T.R., Motiyenko R.A., Mollendal H.,
    Guillemin J.-C.
   <Astron. Astrophys. 543, A46 (2012)>
   =2012A&A...543A..46C
ADC_Keywords: Interstellar medium ; Atomic physics ; Spectra, millimetric/submm

Keywords: methods: data analysis - surveys - catalogs - molecular data -
          techniques: spectroscopic

Abstract:
    Astronomical surveys of interstellar molecules, such as those that
    will be available with the very sensitive ALMA telescope, require
    preliminary laboratory investigations of the microwave and
    submillimeter-wave spectra of new molecular species to identify these
    in the interstellar media.

    We build a linelist that should allow us to detect HCOOCD2H,
    provided it is present in the interstellar media in a suitable
    concentration.

Description:
    The experimental spectra of HCOOCD2H have been recorded in the
    microwave and submillimeter-wave energy range. Line frequencies were
    analyzed using an internal axis method-like treatment taking into
    account the CD2H internal rotation.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table3.dat        59     8419   Observed minus calculated table for the
                              microwave spectrum of HCOOCD2H
table6.dat        54       18   Hyperfine structure analysis results
table10.dat       75    35919   JPL linelist for HCOOCD2H


See also:
  J/A+A/500/1109 : Rotational spectrum of HCOO13CH3 (Carvajal+, 2009)
  J/ApJ/714/1120 : Rotational spectrum and DCOOCH3 in Orion (Margules+, 2010)
  J/ApJS/190/315 : Rotational spectrum of H13COOCH3 (Carvajal+, 2010)
  J/A+A/538/A119 : Spectrum of HCO18OCH3 (Tercero+, 2012)


Byte-by-byte Description of file: table3.dat

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---     Ju        [1/60] J of the upper level
   4-  6  I3    ---     Kau       [0/40] Ka of the upper level
   7-  9  I3    ---     Kcu       [0/60] Kc of the upper level
      12  A1    ---     vu        [±] Upper tunneling sublevel
  15- 17  I3    ---     Jl        [0/60] J of the lower level
  18- 20  I3    ---     Kal       [0/40] Ka of the lower level
  21- 23  I3    ---     Kcl       [0/60] Kc of the lower level
      26  A1    ---     vl        [±] Lower tunneling sublevel
  28- 39  F12.3 MHz     Freq      [4130/664000] Observed frequency
  40- 44  I5    kHz     e_Freq    Experimental uncertainty on Freq
  48- 51  I4    kHz     Diff      Observed minus calculated difference
      55  A1    ---     Type      [DQ] Double or Quartet transition
      59  A1    ---     Set       [ABC] Experimental measurement set


Byte-by-byte Description of file: table6.dat

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---     Ju        [1/4] J of the upper level
   4-  6  I3    ---     Kau       [0/1] Ka of the upper level
   7-  9  I3    ---     Kcu       [0/3] Kc of the upper level
      12  A1    ---     vu        [±] Upper tunneling sublevel
  15- 17  I3    ---     Jl        [0/4] J of the lower level
  18- 20  I3    ---     Kal       [0/1] Ka of the lower level
  21- 23  I3    ---     Kcl       [0/4] Kc of the lower level
      26  A1    ---     vl        [±] Lower tunneling sublevel
  28- 39  F12.3 MHz     Freq      Center frequency
      41  I1    kHz     e_Freq    Uncertainty on Freq
  45- 47  I3    ---     N         [1/14] Number of hyperfine components
  52- 54  F3.1  kHz     rms       RMS deviation of the fit


Byte-by-byte Description of file: table10.dat

   Bytes Format Units     Label   Explanations

   1- 13  F13.4 MHz       Freq    Calculated frequency
  14- 21  F8.4  MHz       e_Freq  Estimated or experimental error of Freq
  22- 29  F8.4 [nm+2.MHz] logGint  Integrated intensity (1)
  30- 31  I2    ---       dof     [3] Degrees of freedom (2)
  32- 41  F10.4 cm-1      Elow    [0.77/1621] Lower state energy (3)
  42- 44  I3    ---       gup     [5/121] Upper stage degeneracy
  45- 51  I7    ---       Tag     Species tag or molecular identifier (4)
  52- 55  I4    ---       QNFMT   [1404] Format of the quantum numbers
  56- 57  I2    ---       J'      [2/60] J quantum number for the upper level
  58- 59  I2    ---       Ka'     [0/49] Ka quantum number for the upper level
  60- 61  I2    ---       Kc'     [0/60] Kc quantum number for the upper level
  62- 63  I2    ---       v'      [0/2] v quantum number for the upper level (5)
  68- 69  I2    ---       J"      [0/60] J quantum number for the lower level
  70- 71  I2    ---       Ka"     [0/49] Ka quantum number for the lower level
  72- 73  I2    ---       Kc"     [0/60] Kc quantum number for the lower level
  74- 75  I2    ---       v"      [0/2] v quantum number for the lower level (5)

Note (1): Base 10 logarithm of the integrated intensity in units of
     nm2MHz at 300K
Note (2): Degrees of freedom in the rotational partition function (0 for
     atoms, 2 for linear molecule, and 3 for nonlinear molecules).
Note (3): Lower state energy in cm-1 relative to the lowest energy
     spin-rotation level in ground vibronic state.
Note (4): A negative value flags that the line frequency has been measured
     in the laboratory. The absolute value of Tag is then the species tag
     and e_Freq is the reported experimental error. The three most
     significant digits of the species tag are coded as the mass number of
     the species.
Note (5): v is 0 for the + tunneling level of the H-out of plane conformer;
     1 for - tunneling level of the H-out of plane conformer; and 2 for the
     H-in plane conformer.


Acknowledgements:
      Laurent Coudert, laurent.coudert(at)lisa.u-pec.fr
(End)                                        Patricia Vannier [CDS]  24-Apr-2012