SIMBAD references

1999MNRAS.307..789H - Mon. Not. R. Astron. Soc., 307, 789-801 (1999/August-3)

The metal homogeneity of the globular star cluster M5.

HEALD A.J., GRIFFITHS W.K., PENNY A.J. and MORRIS P.W.

Abstract (from CDS):

This work is concerned with the precision measurement of the magnitudes of the stars across a large field of the galactic globular cluster M5. The colours of the red giants are subjected to a thorough statistical analysis in order to quantify the extent of any star-to-star variations in metal abundance within the cluster. Use is made of an extensive optical/near-infrared observational data set acquired with a large-array CCD detector and the Johnson V and I filters. The results of this photometry, which is accurate to within a few millimagnitudes for the brighter stars, are used to compile a colour-magnitude diagram.

The analysis finds that in a metal-rich M5 ([Fe/H]=-1.2) the extent of any metal inhomogeneity, Δ[Fe/H], is less than ±0.1dex, and in a metal-poor M5 ([Fe/H]=-1.5) then Δ[Fe/H]{les}-0.15+0.12dex. (The literature contains a range of derived values of metallicity for M5.)

Abstract Copyright: 1999, Royal Astronomical Society

Journal keyword(s): techniques: photometric - stars: abundances - Hertzsprung-Russell (HR) diagram - globular clusters: individual: M5

Nomenclature: Table 1: Cl* NGC 5904 HGP NNN (Nos 1-129).

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

CDS comments: in ref list RATNATUNGA 1985ApJS...59...63R instead of ApJ

Simbad objects: 7

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