SIMBAD references

2005MNRAS.356..647C - Mon. Not. R. Astron. Soc., 356, 647-653 (2005/January-2)

NGC 6404 and 6583: two neglected intermediate-age open clusters located in the Galactic Centre direction.


Abstract (from CDS):

We report on VI charge-coupled device photometry of two fields centred in the region of the open clusters NGC 6404 and 6583 down to V= 22.0. So far these clusters have never been studied, and we provide for the first time estimates of their fundamental parameters, namely, radial extent, age, distance and reddening. We find that the radius of NGC 6404 is 2.0 arcmin, as previously proposed, while the radius of NGC 6583 is 1.0 arcmin, significantly lower than previous estimates. Both clusters turn out to be of intermediate age (0.5-1.0 Gyr old), and located inside the solar ring, at a Galactocentric distance of about 6.5 kpc. These results make these objects very interesting targets for spectroscopic follow-up to measure their metallicity. In fact, they might allow us to enlarge by more than 1 kpc the baseline of the radial abundance gradient in the Galactic disc towards the Galactic Centre direction. This baseline is currently rather narrow especially for clusters of this age.

Abstract Copyright: 2004 RAS

Journal keyword(s): Hertzsprung-Russell (HR) diagram - open clusters and associations: general - open clusters and associations: individual: NGC 6404 - open clusters and associations: individual: NGC 6583

VizieR on-line data: <Available at CDS (J/MNRAS/356/647): ngc6404.dat ngc6583.dat>

Nomenclature: [CMC2005] NGC 6404 NNNNN (Nos 1-24295). [CMC2005] NGC 6583 NNNNN (Nos 1-26086).

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

CDS comments: Table 1: PG 2213+006 is a misprint for PG 2213-006. In chap. 5.2 : NGC 6503 is a misprint for NGC 6583.

Simbad objects: 10

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