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 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:
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FileName Lrecl Records Explanations
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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
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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 (kul=a_0-*T0.3)
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Acknowledgements: Priscilla MARECHAL
References:
Marechal et al., Paper I. 1997A&A...324..221M 1997A&A...324..221M
(End) Patricia Bauer [CDS] 12-Jun-1997