Open clusters under the microscope

Details Open clusters under the microscope Open clusters under the microscope

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991msngr..63...34n&link_type=abstract

ESO Messenger (ISSN 0722-6691), no. 63, p. 34-37.

Physics

8

Binary Stars, Color-Magnitude Diagram, Open Clusters, Stellar Evolution, F Stars, Microscopes, Radial Velocity

Scientific paper

The degree of efficiency with which stellar evolution models correspond to the real stars is examined. The binary test and the cluster test are discussed. The clusters IC 4651 and NGC 3680 are used as examples. It is argued that, if significant conclusions on stellar models or cluster age depend on the correct interpretation of minor features of a cluster CM diagram, careful star-by-star identification of nonmembers and binaries is essential. The binary evidence and cluster data show that convective overshooting does exist as an observable phenomenon in stars of these masses.

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