Old open clusters: UBGVRI photometry of NGC 2506

Preprint

7 July 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/9707076

Abstract

UBGVRI photometry for the open cluster NGC 2506 is presented. From comparison of the observed colour-magnitude diagrams with simulations based on stellar evolutionary models we derive in a self consistent way reddening, distance, and age of the cluster: E(B-V)=0-0.07, (m-M)o = 12.6, age = 1.5-2.2 Gyr. The cluster shows a well definite secondary sequence, suggesting that binary systems constitute about 20 % of the cluster members visible in the colour-magnitude diagram.

Keywords

UBGVRI PHOTOMETRY
MAGNITUDE DIAGRAM
COLOUR MAGNITUDE
OPEN CLUSTERS
CLUSTER NGC
OLD OPEN
UBGVRI
NGC

All Related Versions

Version 1, 1997-07-07, ArXiv
Published version: Monthly Notices of the Royal Astronomical Society, 291 (4), 763.

This publication has 0 references indexed in Scilit: