A search for CO+ in planetary nebulae
Redman, Matt P.
MetadataShow full item record
This item's downloads: 0 (view details)
T. A. Bell, W. Whyatt, S. Viti, M. P. Redman...(2007)A search for CO+ in planetary nebulae, Mon.Not.Roy.Astron.Soc.382:1139-1144,2007
We have carried out a systematic search for the molecular ion CO+ in a sample of 8 protoplanetary and planetary nebulae in order to determine the origin of the unexpectedly strong HCO+ emission previously detected in these sources. An understanding of the HCO+ chemistry may provide direct clues to the physical and chemical evolution of planetary nebulae. We find that the integrated intensity of the CO+ line may be correlated with that of HCO+, suggesting that the reaction of CO+ with molecular hydrogen may be an important formation route for HCO+ in these planetary nebulae.