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Table 1
NGC 1851 and NGC 1904 basic properties from Harris 1996.
NGC 1851 | ||
RA, Dec (2000) | 05:14:06.3 − 40:02:50 | Coordinates of cluster center |
L,B | 244.51 − 35.04 | Galactic coordinates |
Rsun | 12.1 kpc | Distance from sun |
RMW | 16.7 kpc | Distance from Milky Way center |
Vlos | 320.5 km s-1 | Line of sight radial velocity |
MV | −8.33 | Total V band magnitude |
Mass/M⊙ | 1.8 × 105 | From luminosity assuming M/LV = 1 |
rh | 0.52 arcmin or 1.83 pc | Half light radius |
rt | 11.7 arcmin or 41.2 pc | Tidal radius |
r0 | 4.1 arcmin or 14.5 pc | Radius where a = 1.2 × 10-8 cm s-2 |
Scale factor | 3.52 | pc/arcmin |
NGC 1904 | ||
RA, Dec (2000) | 05:24:10.6 −24:31:27 | Coordinates of cluster center |
L,B | 227.23−29.53 | Galactic coordinates |
Rsun | 12.9 kpc | Distance from sun |
RMW | 18.8 kpc | Distance from Milky Way center |
Vlos | 206.0 km s-1 | Line of sight radial velocity |
MV | −7.86 | Total V band magnitude |
Mass/M⊙ | 1.2 × 105 | From luminosity assuming M/LV = 1 |
rh | 0.80 arcmin or 3.0 pc | Half light radius |
rt | 8.34 arcmin or 31.3 pc | Tidal radius |
r0 | 3.1 arcmin or 11.7 pc | Radius where a = 1.2 × 10-8 cm s-2 |
Scale factor | 3.75 | pc/arcmin |
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