The ellipticities of globular clusters and the cyanogen problem

Details The ellipticities of globular clusters and the cyanogen problem The ellipticities of globular clusters and the cyanogen problem

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...313l..65n&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 313, Feb. 15, 1987, p. L65-L68.

Astronomy and Astrophysics

Astrophysics

50

Cyanogen, Ellipticity, Globular Clusters, Stellar Rotation, Abundance, Angular Momentum, Red Giant Stars, Stellar Evolution

Scientific paper

For globular clusters having Fe/H between -1.9 and -1.2 a positive correlation is shown to exist between the degree of cyanogen enrichment in the red giants of a given cluster and the apparent flattening of that system. This suggests that angular momentum is an important key to the understanding of cyanogen anomalies within clusters and offers support for the idea that evolutionary mixing, driven by rotation, is responsible for a large part of the phenomenon. Not all observations, however, can be readily explained in this manner, and a short discussion is given of desiderata needed to clarify the problem.

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