A search for CO in planetary nebulae - AstrophysicsReport as inadecuate

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Abstract: We have carried out a systematic search for the molecular ion CO+ in a sampleof 8 protoplanetary and planetary nebulae in order to determine the origin ofthe unexpectedly strong HCO+ emission previously detected in these sources. Anunderstanding of the HCO+ chemistry may provide direct clues to the physicaland chemical evolution of planetary nebulae. We find that the integratedintensity of the CO+ line may be correlated with that of HCO+, suggesting thatthe reaction of CO+ with molecular hydrogen may be an important formation routefor HCO+ in these planetary nebulae.

Author: T. A. Bell, W. Whyatt, S. Viti, M. P. Redman

Source: https://arxiv.org/

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