Astronomy & Astrophysics

All Tables

Table 1: Template stars. The h values are the peaks of the cross-correlation function for the template star spectra vs. each of the two clusters, using the range 7310-7570 Å. Absolute M_V magnitudes were calculated using apparent V magnitudes from the Bright Star Catalogue and Hipparcos parallaxes.
Table 2: Velocity dispersions (km s^-1). Mean values: (1) Weighted by (1/rms), (2) weighted by $\langle h \rangle$ . S/N is per resolution element (3 pixels). Wavelength ranges: 4520-4850 Å (UVES-B), 6770-6850 Å and 6940-7110 Å (UVES-RL(1)), 7310-7570 Å (UVES-RL(2)), 7710-8070 Å (UVES-RL(3)), and 8680-8880 Å (UVES-RU).
Table 3: Structural parameters from ISHAPE fits to HST/WFPC2 images. Numbers in this table are for a fitting radius of $3\hbox {$^{\prime \prime }$ }$ (30 pixels). For N5236-502 and N5236-805 the "V'' entries refer to F606W and F547M data, while "I'' refers to F814W for both clusters.
Table 4: Ground-based and HST photometry for the clusters. A foreground reddening correction of A_B=0.284 mag has been applied.
Table 5: Age and reddening estimates for the clusters. For N5236-502 we used the VLT/FORS photometry. The A_B values listed here are in addition to our adopted foreground reddening of A_B=0.284 mag.
Table 6: Derived physical parameters. Uncertainties on M_V are mainly due to the uncertainties on A_B. Photometric mass estimates are given for a Kroupa MF and for Salpeter MF with lower mass limit of $0.1~\mbox{$M_{\odot}$ }$ . Central V-band surface brightnesses ( $\mu _{0,V}$ ) in mag arcsec^-2 and estimated core densities ( $\rho _0$ ) in $M_{\odot }$ pc^-3 are also listed.