Open AccessC 2 absorption‐line diagnostics of diffuse interstellar clouds
Author(s) -
CecchiPestellini Cesare,
Dalgarno Alexander
Publication year - 2002
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2002.05418.x
Subject(s) - physics , interstellar cloud , interstellar medium , diatomic molecule , molecular cloud , astrophysics , line (geometry) , line of sight , excitation , absorption (acoustics) , astrochemistry , atomic physics , astronomy , molecule , optics , galaxy , stars , geometry , mathematics , quantum mechanics
The excitation of the diatomic carbon molecule in diffuse interstellar clouds is discussed for a cloud with large density fluctuations of small linear filling factor along the line of sight. Possible implications for the chemistry of the diffuse cloud in front of Cygnus OB2 No. 12 are discussed.