Nuclear Processing and Isotopes in the Galaxy

@article{Penzias1980NuclearPA,
  title={Nuclear Processing and Isotopes in the Galaxy},
  author={A. Penzias},
  journal={Science},
  year={1980},
  volume={208},
  pages={663 - 669}
}
The galactic distributions of the stable isotopic species of hydrogen, carbon, nitrogen, oxygen, sulfur, and silicon have been derived from the study of interstellar molecules which contain them. The resulting observational framework appears consistent with our general understanding of stellar evolution and nuclear processing in the galaxy. The greater amount of star formation that has taken place near the center of our galaxy is reflected in an enhanced abundance of processed material, notably… Expand
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