Free Access
Volume 547, November 2012
Article Number A107
Number of page(s) 16
Section Galactic structure, stellar clusters and populations
Published online 06 November 2012

Online material

Appendix A: Plots of the entire sample

All plots used in the analysis of structural and fundamental parameters are displayed in this Appendix. Figure A.1 shows the stellar surface-density maps and the distribution of the stellar density as a function of radius (same as Fig. 1).

Figure A.2 presents colour–colour and colour–magnitude diagrams in the left-hand panel (same as Fig. 2). The centre and right panels show the histogram of age and the mass distribution, respectively (same as Fig. 3).

thumbnail Fig. A.1

Left: stellar surface-density map (σ (stars/arcmin2)) obtained for the region of 30 arcmin around the clusters. The comparison field-stars area is indicated by dashed lines, while the full line indicates the cluster area. Centre: a zoom of the σ map indicating by crosses the position of objects with membership probability P > 70%. Right: the distribution of the stellar density as a function of radius. The best fitting of observed radial density profile, indicated by the full line, was obtained by using the model from King (1962). A dashed line indicates the background density (σbg).

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thumbnail Fig. A.2

Left panels: colour–colour and colour–magnitude diagrams. The MS and the ZAMS are indicated by full lines, while the locus of giant stars is represented by a dotted line. Reddening vectors from Rieke & Lebofsky (1985) are shown by dot-dashed lines. The isochrones and evolutionary pre-MS tracks from Siess et al. (2000). Cluster members are indicated by open diamonds (P50) and dots (P?). Centre: age distribution of clusters members (thick line) showing the contribution of P50 (dotted line) and P? (dashed line) objects. Right: observed mass distribution indicated by crosses with error bars. The thick line represents the mass function φ(m) fitting.

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© ESO, 2012

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