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J/A+A/328/617       16O18O isotopomer collision rate (Marechal+ 1997)
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Chemistry and rotational excitation of O2 in interstellar clouds.
II - The ^16^O^18^O 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 ^18^O
    and ^13^C isotopic reactions with a non-LTE calculations of ^16^O^18^O
    rotational population has been used to predict the intensity of the
    three ^16^O^18^O 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 ^16^O^18^O-He (cm^3/s)
table4b            20      135   Collision rates ^16^O^18^O-He (cm^3/s)
table4c            20      131   Collision rates ^16^O^18^O-He (cm^3/s)
table4.tex         76      212   LaTeX version of table4
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Byte-by-byte Description of file: table4a table4b table4c
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   Bytes Format Units   Label     Explanations
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   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 (k_ul_=a_0-*T^0.3^)
--------------------------------------------------------------------------------

Acknowledgements: Priscilla MARECHAL <priscila@mesiom.obspm.fr>

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