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Table 1

Properties of the foreground contamination towards the MW satellites.

Galaxy l b dm VHB vsys σ Ncont %(Ncont) %(Ncont) %(Ncont) %(Ncont) Ref.
(°) (°) [km s-1] [km s-1] /4 deg2 vel. crit. (3σ) line crit. both (3σ) both (4σ)

Fornax 237.1 –65.7 20.7 21.29 54.1 11.4 2309 44% 17% 6% 8% 1, 2, 3
Sculptor 287.5 –83.2 19.54 20.13 110.6 10.1 1872 4% 16% 2% 3% 1, 2, 4
Sextans 243.5 42.3 19.67 20.35 226.0 8.4 3687 0.9% 12% 0.5% 0.6% 1, 2, 5

Canes Venatici II 74.3 79.8 20.9 –128.9 4.6 2891 2% 14% 0.9% 1% 6, 7
Canes Venatici I 113.6 82.7 21.75 22.4 30.9 7.6 2283 21% 19% 3% 5% 8, 9, 7
Carina 260.1 –22.2 20.03 20.50 223.9 7.5 18 000 0.7% 16% 0.5% 0.7% 1, 2, 10
Coma Berenices 241.9 83.6 18.2 98.1 4.6 1738 1% 11% 0.5% 0.7% 6, 11, 7
Draco 86.4 34.7 19.58 20.07 –293.0 9.1 6329 0.5% 15% 0.4% 0.5% 1, 2, 12
Hercules 28.7 36.9 20.7 21.17 45.0 5.1 13 368 13% 22% 3% 4% 6, 13, 7
Leo I 226.0 49.1 21.99 22.30 286.0 9.2 2617 1% 16% 0.3% 0.5% 1, 2, 12
Leo II 220.2 67.2 21.63 22.30 76.0 6.6 2248 12% 19% 3% 4% 1, 2, 12
Leo IV 265.4 56.5 21.0 132.2 7.6 3930 6% 13% 2% 2% 6, 7
Segue I 220.5 50.4 16.8 208.5 3.7 1637 0.2% 9% 0.1% 0.2% 6, 14
Ursa Major I 152.5 37.4 20.13 20.5 –55.3 7.6 4096 24% 11% 3% 4% 7, 9
Ursa Major II 159.4 54.4 17.5 –116.5 6.7 1868 2% 10% 0.9% 1% 15, 7
Ursa Minor 105.0 44.8 19.11 19.80 –248 9.5 3449 0.8% 14% 0.6% 0.8% 1, 2, 12
Willman 1 158.6 56.8 17.9 –12.3 4.3 2026 32% 8% 1% 2% 9

Notes. Ncont/4 deg2 is the number of contaminants contained within a solid angle of 4 deg2 along the l.o.s. to the galaxy. The last 4 columns list the fraction of contaminants retained when using only the velocity criterion, the line criterion, when applying both, and applying both relaxing the velocity selection to 4-σ.

References. (1) Mateo (1998); (2) Irwin & Hatzidimitriou (1995); (3) Battaglia et al. (2006); (4) Battaglia et al. (2008b); (5) B11; (6) Belokurov et al. (2007); (7) Simon & Geha (2007); (8) Zucker et al. (2006b); (9) Martin et al. (2007); (10) Koch et al. (2006); (11) Belokurov et al. (2007); (12) Walker et al. (2009b); (13) Adén et al. (2009a); (14) Simon et al. (2011); (15) Zucker et al. (2006a).

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