Carbon isotope ratio in comets and interstellar matter.
Abstract
The C-12/C-13 isotope ratio in the interstellar medium and in stellar atmospheres is discussed and compared with the value found in the solar system and especially in comets. The cometary value (at least 100) tends to be slightly above the terrestrial value (89) and is definitely higher than that for interstellar molecular clouds (about 30 to 50). This result implies that comets are not of interstellar origin.
- Publication:
-
IAU Colloq. 39: Comets, Asteroids, Meteorites: Interrelations, Evolution and Origins
- Pub Date:
- 1977
- Bibcode:
- 1977cami.coll..499V
- Keywords:
-
- Abundance;
- Carbon Isotopes;
- Comets;
- Interstellar Matter;
- Stellar Atmospheres;
- Absorption Spectra;
- Line Spectra;
- Spectral Line Width;
- Astrophysics;
- Carbon:Comets;
- Carbon:Interstellar Matter