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On the interpretation of the CH cometary spectrum
Arpigny, Claude; Zeippen, C. J.; Klutz, M. et al.
1987In Diversity and Similarity of Comets
 

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Keywords :
COMETS; EMISSION SPECTRA; HYDROCARBONS; RADICALS; ABUNDANCE; MOLECULAR EXCITATION; MOLECULAR ROTATION; RADIATION CHEMISTRY
Abstract :
[en] A procedure to compute cometary spectra taking into account radiative processes and collisional effects is described. The populations of the rotational levels are determined by solving the statistical equilibrium equations at a certain number of locations within the coma (which can be modelled with n(R), T(R), v(R) laws) and the emerging intensity is then evaluated by integrating the emissions along the line of sight. Such a program was applied to the CH radical. The importance of collisions in exciting the lower rotational levels of CH is confirmed.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Arpigny, Claude ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Zeippen, C. J.
Klutz, M.
Magain, Pierre  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image
Hutsemekers, Damien ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Language :
English
Title :
On the interpretation of the CH cometary spectrum
Publication date :
1987
Audience :
International
Main work title :
Diversity and Similarity of Comets
Pages :
607-612
Available on ORBi :
since 09 March 2010

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