The satellite galaxies of the Milky Way
The dSph satellites of the Milky Way
dSph d (l,b) V M(V) (B-V) e PA r(c) r(t) R(t) S(o) L(V) M M/L [Fe/H] Age
Sagittarius 24 ±2 ( 6,-14) 4.0 -13.4 0.6 0.8 120 60? >10° >4 25.4 18.1 -- 50? -1.0±0.2 Int
Bootes 60 ±? (358,+70) 13.3 -5.7 0.3 10 13 28.1
Ursa Minor 66 ±3 (105,+45) 10.3 -8.9 1.3 0.6 50 16 60 1.1 25.5 0.3 23 75 -2.2±0.1 Old
Sculptor 79 ±4 (288,-83) 8.5 -11.1 0.7 0.3 100 6 77 0.2 23.7 2.2 6 3 -1.8±0.1 Old
Draco 82 ±6 ( 86,+35) 10.9 -8.8 1.0 0.3 80 9 28 0.7 25.3 0.3 22 85 -2.0±0.1 Old
Sextans 86 ±4 (244,+42) 10.3 -9.5 0.7 0.4 55 17 160 4.0 26.2 0.5 19 40 -1.7±0.2 Old
Ursa Major 100 ±? (160,+54) -6.8
Carina 101 ±5 (260,-22) 10.9 -9.3 0.7 0.3 65 9 29 0.8 25.5 0.4 13 30 -2.0±0.2 Int-Old
Fornax 138 ±8 (237,-66) 7.6 -13.2 0.6 0.3 50 14 71 2.8 23.4 15.5 68 4 -1.3±0.2 Int-Old
Leo II 205 ±12 (220,+67) 12.0 -9.6 0.6 0.1 10 3 9 0.5 24.0 0.6 10 20 -1.9±0.1 Old
Canes Venatici 220 ±? ( 74,+80) 13.9 -7.9 0.4 70 8 27.8
Leo I 250 ±30 (226,+49) 10.1 -11.9 0.8 0.2 80 3 13 0.9 22.4 4.8 22 5 -1.5±0.4 Int-Old
d - distance (kpc)
(l,b) - galactic coordinates
V - total visual magnitude
(B-V) - color, absolute magnitudes
e - ellipticity (of the outer part of the galaxy)
PA - position angle of major axis (north=0°,east=90°)
r(c) - core radius (arcmin)
r(t) - tidal radius (arcmin)
R(t) - tidal radius (kpc)
M(V) - absolute V (visual) magnitude
S(o) - central surface brightness V magnitudes/square arcsec
L(V) - visual luminosity in units of 10**6 L(sun)
M - total virial mass in units of 10**6 M(sun)
M/L(V) - total mass-to-light ratio
[Fe/H] - metallicity
Age - stellar populations with ages < 10 Gyr = Intermediate
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