SIMBAD references

NGC 6440 is another case of bulge high metallicity globular cluster with particular colour magnitude diagram properties, like those of NGC 6553, NGC 6528 and Terzan 1. We present V and I observations of NGC 6440, and find a reddening of E(B-V)≃1.00±0.1, and a distance of d_☉≃8.47kpc. The colour magnitude diagram morphology shows characteristics very similar to those of NGC 6553 and NGC 6528, in particular the horizontal branch clump almost superimposed on the giant branch, and a curved upper giant branch, showing that NGC 6440 also has a metallicity close to solar. The observations are available in electronic form at the CDS (ftp 130.79.128.5).