1999MNRAS.307..789H

Query : 1999MNRAS.307..789H

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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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
2 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
3 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 2095 0
4 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2291 0
5 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0
6 M 22 GlC 18 36 23.94 -23 54 17.1           ~ 1459 0
7 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2121 0

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