The growth of carbon chains in IRC +10216 mapped with ALMA.

@article{Agndez2017TheGO,
  title={The growth of carbon chains in IRC +10216 mapped with ALMA.},
  author={Marcelino Ag{\'u}ndez and Jos{\'e} Cernicharo and Guillermo Quintana-Lacaci and A. Castro-Carrizo and L. Velilla Prieto and N. Marcelino and M. Gu{\'e}lin and Christine Joblin and Jos{\'e} Angel Mart{\'i}n-Gago and Carl A. Gottlieb and Nimesh Patel and Michael C. McCarthy},
  journal={Astronomy and astrophysics},
  year={2017},
  volume={601}
}
Linear carbon chains are common in various types of astronomical molecular sources. Possible formation mechanisms involve both bottom-up and top-down routes. We have carried out a combined observational and modeling study of the formation of carbon chains in the C-star envelope IRC +10216, where the polymerization of acetylene and hydrogen cyanide induced by ultraviolet photons can drive the formation of linear carbon chains of increasing length. We have used ALMA to map the emission of λ 3 mm… 

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