Open AccessThe CO Cameron band emission in the Red Rectangle
Author(s) -
Yan M.,
Dalgarno A.,
Klemperer W.,
Miller A. E. S.
Publication year - 2000
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.1365-8711.2000.03421.x
Subject(s) - physics , rectangle , ion , dissociative recombination , line of sight , astrophysics , emission spectrum , electron density , atomic physics , electron , astronomy , recombination , spectral line , nuclear physics , geometry , mathematics , biochemistry , chemistry , quantum mechanics , gene
The origin of the strong CO Cameron band emission in the Red Rectangle is investigated. From a comparison of laboratory spectroscopic data and astronomical observations in combination with chemical modelling, it is concluded that the Cameron band emission of CO originates from the dissociative recombination of HCO + , and its intensity provides a measure of the product of the density of HCO + ions and the electron density, integrated along the line of sight.