The intermediate age open cluster NGC 2660

Details The intermediate age open cluster NGC 2660 The intermediate age open cluster NGC 2660

1999-07-05

arxiv.org/abs/astro-ph/9907048v1

Astronomy and Astrophysics

Astrophysics

12 pages, 8 (encapsulated) figures, to be published on MNRAS

Scientific paper

10.1046/j.1365-8711.1999.02906.x

We present CCD UBVI photometry of the intermediate old open cluster NGC2660, covering from the red giants region to about seven magnitudes below the main sequence turn-off. Using the synthetic Colour - Magnitude Diagram method, we estimate in a self-consistent way values for distance modulus ((m-M)0 ~= 12.2), reddening (E(B-V) ~= 0.40), metallicity ([Fe/H] about solar), and age (age ~ 1 Gyr). A 30% population of binary stars turns out to be probably present.

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