AL Variations in Globular Clusters: Tests of Deep Mixing Scenarios

Details AL Variations in Globular Clusters: Tests of Deep Mixing Scenarios AL Variations in Globular Clusters: Tests of Deep Mixing Scenarios

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...18511602s&link_type=abstract

American Astronomical Society, 185th AAS Meeting, #116.02; Bulletin of the American Astronomical Society, Vol. 26, p.1513

Astronomy and Astrophysics

Astronomy

7

Scientific paper

First results of a systematic survey of aluminum abundances in globular cluster giants are reported. Star to star variations in the aluminum abundances for bright giants in M13 ([Fe/H] = -1.5) and M5 ([Fe/H] = -1.2) have been detected. The Al to Na correlation and the Al to O anti-correlation predicted by the deep mixing theory are confirmed. However, the spread in aluminum abundances within M13 is much larger than the spread predicted by deep mixing. No star to star variations of aluminum are found in the relatively metal-rich cluster M71 ([Fe/H] = -0.8).

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