A lower limit on the surface C-12/C-13 ratio in Alpha Orionis

Details A lower limit on the surface C-12/C-13 ratio in Alpha Orionis A lower limit on the surface C-12/C-13 ratio in Alpha Orionis

May 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...205..841g&link_type=abstract

Astrophysical Journal, vol. 205, May 1, 1976, pt. 1, p. 841-847.

Astronomy and Astrophysics

Astrophysics

4

Abundance, Carbon Monoxide, Carbon 12, Carbon 13, Stellar Spectra, Atmospheric Models, Line Spectra, Molecular Spectra, Stellar Atmospheres

Scientific paper

The second overtone CO bands near 1.6 microns were analyzed in Alpha Ori
using synthetic spectra. No firm identification of (C-13)O was made,
which allowed a lower limit of 20 to be set on the C-12/C-13 ratio. A
rather low microturbulent velocity of 2 km/s was found to match the
spectrum of Alpha Ori best.

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