Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Molecular abundances in carbon-rich circumstellar envelopes

  • 25 Accesses

  • 2 Citations


Millimetre observations of three southern carbon stars, IRAS 07454-7112, IRAS 15082-4808 and IRAS 15194-5115 detected 14 molecular species and some of their isotopomers. The12C/13C ratio was found to vary between sources.

This is a preview of subscription content, log in to check access.


  1. Nyman, L.-Å., Olofsson, H., Johansson, L.E.B., Booth, R.S., Carlström, U., Wolstencroft, R.,: 1993,A&A 269, 377.

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Nyman, L.-., Olofsson, H. Molecular abundances in carbon-rich circumstellar envelopes. Astrophys Space Sci 224, 527–528 (1995).

Download citation

Key words

  • stars: carbon
  • molecules