Interstellar isotopic ratios, stellar mass losses and galactic evolution

  • J. Audouze+
  • J. Lequex
Part V: Large-Scale Distribution of H II Regions
Part of the Lecture Notes in Physics book series (LNP, volume 42)


A study of presently available data shows that the 12C/13C ratio in the interstellar matter is about 40, rather than 89 as in the solar system, which has the isotopic composition of the interstellar matter 4.6 X 109 years ago. Mass loss by evolved stars and possibly novae is responsible for relative enrichment in 13C. Isotopes of CNO seem to be very promising tools for the study of galactic evolution.


Mass Loss Solar System Interstellar Medium Stellar Mass Planetary Nebula 
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  1. Audouze, J., Lequeux, J., Vigroux, L., 1975, submitted to Astron. Astrophys. Google Scholar
  2. Bertojo, M., Chui, M.F., Townes, C.H., 1974, Science, 184, 619.Google Scholar
  3. Danks, A.C., Lambert, D.L., Arpigny, C., 1974, Astrophys. J, 194, 745Google Scholar
  4. Gardner, F.F., Winnewisser, G. 1975, this Symposium and Astrophys. J. Letters, in press.Google Scholar
  5. Gehrz, R.D., Woolf, N.J., 1971, Astrophys. J., 165, 285Google Scholar
  6. Starrfield, S., Sparks, W.M., Truran, J.W., 1974, Astrophys. J. Suppl., 228, 247Google Scholar
  7. Wannier, P.G., 1974. Ph D thesis, Princeton University.Google Scholar

Copyright information

© Springer-Verlag 1975

Authors and Affiliations

  • J. Audouze+
    • 1
    • 2
  • J. Lequex
    • 1
  1. 1.Département de RadioastronomieObservatoire de MeudonMeudonFrance
  2. 2.Laboratoire René BernasOrsay-CampusFrance

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