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J/A+A/328/617       16O18O isotopomer collision rate (Marechal+ 1997)
Chemistry and rotational excitation of O2 in interstellar clouds.
II - The 16O18O isotopomer
       Marechal P., Viala Y.P., Pagani L.
      <Astron. Astrophys. 328, 617 (1997)>
      =1997A&A...328..617M      (SIMBAD/NED BibCode)
ADC_Keywords: Atomic physics ; Radio lines

Keywords: molecular processes - ISM: abundances, molecules - radio lines: ISM


Description:
    In this paper, a chemical model of interstellar clouds including 18O
    and 13C isotopic reactions with a non-LTE calculations of 16O18O
    rotational population has been used to predict the intensity of the
    three 16O18O lines observable from the ground, namely 234, 298 and
    402GHz.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table4a           21      135   Collision rates 16O18O-He (cm^3/s)
table4b           20      135   Collision rates 16O18O-He (cm^3/s)
table4c           20      131   Collision rates 16O18O-He (cm^3/s)
table4.tex        76      212   LaTeX version of table4


Byte-by-byte Description of file: table4a table4b table4c

   Bytes Format Units   Label     Explanations

   1-  2  I2    ---     Nu        N value of the upper level
   4-  5  I2    ---     Ju        J value of the upper level
   7-  8  I2    ---     Nl        N value of the lower level
  10- 11  I2    ---     Jl        J value of the lower level
  13- 20  E8.1  ---     a0        Collision rate factor (kul=a_0-*T0.3)


Acknowledgements: Priscilla MARECHAL 


References:
  Marechal et al., Paper I.  1997A&A...324..221M
(End)                                         Patricia Bauer [CDS]   12-Jun-1997