The Abundance of Oxygen in M 13

Details The Abundance of Oxygen in M 13 The Abundance of Oxygen in M 13

Apr 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aspc...92..379p&link_type=abstract

Formation of the Galactic Halo...Inside and Out, ASP Conference Series, Vol. 92, 1996, Heather Morrison and Ata Sarajedini, eds.

Physics

Scientific paper

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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