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Table 4.
Velocity dispersion estimates for the smooth M 87 halo as a function of the major axis distance.
| Rrobust | σrobust | RRMS | σRMS |
|---|---|---|---|
| (kpc) | (km s−1) | (kpc) | (km s−1) |
| 25.2 | 218.4 ± 26.7 | 25.9 | 256.5 ± 29.3 |
| 51.5 | 245.6 ± 28.0 | 51.7 | 287.7 ± 29.3 |
| 74.3 | 248.0 ± 30.0 | 74.3 | 371.9 ± 47.3 |
| 95.8 | 252.0 ± 43.6 | 96.2 | 345.1 ± 53.0 |
| 118.6 | 161.9 ± 24.5 | 118.4 | 270.4 ± 34.8 |
| 170.0 | 99.6 ± 31.5 | 167.2 | 150.4 ± 31.9 |
Notes. Columns 1 and 3: major axis distance. Columns 2 and 4: velocity dispersion and their uncertainties for the M 87 smooth halo given by the robust estimate and by the simple RMS of the data (see text for details).
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