SIMBAD references

2005AJ....130..626K - Astron. J., 130, 626-634 (2005/August-0)

Color-magnitude diagrams and luminosity functions down to the hydrogen-burning limit. III. A preliminary Hubble space telescope study of NGC 6791.

KING I.R., BEDIN L.R., PIOTTO G., CASSISI S. and ANDERSON J.

Abstract (from CDS):

Using Hubble Space Telescope Advanced Camera for Surveys Wide Field Channel images, we derive the color-magnitude diagram of the old, metal-rich open cluster NGC 6791 to nearly 29th magnitude in V, which is the neighborhood of the hydrogen-burning limit. Comparison with isochrones leads to a discussion of the distance modulus, the reddening, and the age of the cluster. By making a statistical correction for field stars, we derive a preliminary luminosity function and a very tentative mass function. The white dwarf sequence is clearly shown and has been discussed in a separate paper.

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Journal keyword(s): Stars: Hertzsprung-Russell Diagram - Galaxy: Open Clusters and Associations: Individual: NGC Number: NGC 6791 - Stars: Low-Mass, Brown Dwarfs

Simbad objects: 7

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