Hostname: page-component-5cf477f64f-tgq86 Total loading time: 0 Render date: 2025-04-07T07:36:39.686Z Has data issue: false hasContentIssue false
  • English
  • Français

The 12C/13C Ratio in Unevolved Cool Stars

Published online by Cambridge University Press:  19 July 2016

Y. Chmielewski  and
D. L. Lambert
Y. Chmielewski
Affiliation:
Observatoire de Genève, 1290 Sauverny, Switzerland
D. L. Lambert
Affiliation:
Department of Astronomy, University of Texas, Austin, TX 78712, USA

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We show that the carbon isotope ratio 12C/13C in the atmosphere of dwarf stars can be determined with reasonable accuracy from high resolution, high signal-to-noise ratio observations of the CH G-band in their spectra. Lines suitable for this purpose are selected from consideration of the solar case, for which 12C/13C = 89 is derived. A preliminary analysis of these features in the spectra of μ Her, δ Eri and τ Cet yields 12C/13C values of 84, 80 and 150 respectively.

Type
VII. Abundance Constraints on Stellar Evolution, Nucleosynthesis, and Cosmological Theories
Information
Symposium - International Astronomical Union , Volume 132: The Impact of Veryhigh S/N Spectroscopy on Stellar Physics , 1988 , pp. 589 - 592
Copyright
Copyright © Kluwer 1988 

References

Chmielewski, Y.: 1984, Astron. Astrophys. 133, 83 Google Scholar
Hall, D.N.B.: 1973, Ap. J. 182, 977 CrossRefGoogle Scholar
Harris, M.J., Lambert, D.L., Goldman, A.: 1987, Monthly Notices Roy. Astron. Soc. 224, 237 CrossRefGoogle Scholar
Iversen, O.: 1976, Inst. Theor. Astrophys. Blindern-Oslo, Rep. No. 45 Google Scholar
Krupp, B.M.: 1973, , Google Scholar
Lambert, D.L., Dearborn, D.S.: 1972, Mem. Soc. Roy. Sci. Liège, 6e série, 3, 147 Google Scholar
Sneden, C., Pilachowski, C.A., VandenBerg, D.A.: 1986, Ap.J. 311, 826 CrossRefGoogle Scholar