Main-sequence fitting and the Hipparcos open cluster distance scale

Details Main-sequence fitting and the Hipparcos open cluster distance scale Main-sequence fitting and the Hipparcos open cluster distance scale

1999-11-30

arxiv.org/abs/astro-ph/9911522v1

Astronomy and Astrophysics

Astrophysics

10 pages, includes two figures, to appear in Stellar Clusters and Associations: Convection, Rotation, and Dynamos, ed. R. Pall

Scientific paper

The difference between the Hipparcos open cluster distance scale and that obtained from main sequence fitting is examined. The two color main sequence fitting technique of Pinsonneault et al. (1998) is extended to NGC 2516, NGC 6475, and NGC 6633. The error sources for main sequence fitting are examined, and possible evidence for systematic errors in the Hipparcos parallaxes is discussed.

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