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| Paper: |
The Abundance of Oxygen in M 13 |
| Volume: |
92, Formation of the Galactic Halo. . . . Inside and Out |
| Page: |
379 |
| Authors: |
Pilachowski, C. A.; Armandroff, T. E. |
| Abstract: |
Moderate resolution spectra of the O I triplet feature near 7770 Angstroms have been obtained for 40 stars near the base of the giant branch in the globular cluster M 13 to determine the average abundance of oxygen in this cluster. The spectra of all 40 stars, which are of similar temperature and surface gravity, have been combined to produce a single, high signal-to-noise ratio spectrum from which we can derive an upper limit on the average oxygen abundance in relatively unevolved stars in M 13. |
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