Table 6
Clusters with velocity dispersion data probing accelerations below a0.
| Name | R⊙ | RMW | M(v) | Mass | r0 | rtidal | rflat | σ | a @ rflat |
| [kpc] | [kpc] | [M⊙] | [pc] | [pc] | [pc] | [km s-1] | [10-8 cm s-2] | ||
|
|
|||||||||
| NGC 1851 | 12.1 | 16.7 | −8.33 | 1.8 × 105 | 14.5 | 41 | 12.5 ± 2.5 | 4.0 ± 0.5 | 1.6 ± 0.4 |
| NGC 1904 (M79) | 12.9 | 18.8 | −7.86 | 1.2 × 105 | 11.7 | 31 | 12 ± 2 | 2.25 ± 0.4 | 1.1 ± 0.3 |
| NGC 5139 (ω Cen) | 5.5 | 6.4 | −10.29 | 1.1 × 106 | 35.7 | 72 | 32 ± 3 | 7 ± 1 | 1.5 ± 0.4 |
| NGC 6171 (M107) | 6.4 | 3.3 | −7.13 | 5.9 × 104 | 8.0 | 32 | 8 ± 2 | 2.7 ± 0.3 | 1.3 ± 0.6 |
| NGC 6341 (M92) | 8.2 | 9.6 | −8.20 | 1.6 × 105 | 13.6 | 36 | 12 ± 2 | 3.1 ± 0.4 | 1.5 ± 0.6 |
| NGC 7078 (M15) | 10.3 | 10.4 | −9.17 | 3.9 × 105 | 21.3 | 64 | 20 ± 2 | 3.2 ± 0.5 | 1.4 ± 0.4 |
| NGC 7099 (M30) | 8.0 | 7.1 | −7.43 | 7.8 × 104 | 9.6 | 43 | 10 ± 2 | 2.2 ± 0.3 | 1.1 ± 0.4 |
Notes. The meaning of the columns is as follows. 1) Cluster name; 2) distance of the clusters from the sun; 3) distance from Milky Way center; 4) absolute total V band magnitude, used to derive the mass assuming M/L = 1 in solar units; 5) cluster mass from luminosity in solar masses; 6) radius where the acceleration is a0 = 1.2 × 10-8 cm s-2; 7) cluster tidal radius from Harris 1996; 8) radius where the velocity dispersion profile flattens out; 9) cluster asymptotic velocity dispersion; 10) acceleration at the radius rflat.
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