• Corpus ID: 5632486

H2 emission from CRL 618

  title={H2 emission from CRL 618},
  author={Fabrice Herpin and J.Cernicharo and Ana Mar{\'i}a Heras},
  journal={arXiv: Astrophysics},
We present a complete study of the H2 infrared emission, including the pure rotational lines, of the proto Planetary Nebulae CRL 618 with the ISO SWS. A large number of lines are detected. The analysis of our observations shows: (i) an OTP ratio very different from the classical value of 3, probably around 1.76-1.87; (ii) a stratification of the emitting region, and more precisely different regions of emission, plausibly located in the lobes, in an intermediate zone, and close to the torus… 

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