Carbon-chain molecules as tracers of time-dependent chemistry

Details Carbon-chain molecules as tracers of time-dependent chemistry Carbon-chain molecules as tracers of time-dependent chemistry

Aug 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999pcim.conf..326g&link_type=abstract

The Physics and Chemistry of the Interstellar Medium, Proceedings of the 3rd Cologne-Zermatt Symposium, held in Zermatt, Septemb

Physics

5

Scientific paper

Gas-phase chemical models seem able to reproduce the abundances of organic interstellar molecules, provided the clouds are relatively young. Age, however, is not observationally constrained in most astronomical sources. An exception is IRC+10216, an expanding circumstellar envelope, where the distance to the central star is also a measure of age. An analysis of the spatial distribution of carbon chains in that source shows that the agreement between predicted and observed abundances is fortuitous.

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