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 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