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Table A.1

σ Orionis stars and brown dwarfs that we searched for close companions.

Simbad ID RA Dec J a
hh:mm:ss.ss dd:mm:ss.s (mag) (M)

[BZR99] S Ori 13 05 38 13.21 –02 24 07.6 14.06 0.156
[BZR99] S Ori 9 05 38 17.18 –02 22 25.7 13.55 0.233
[BMZ2001] S Ori J053818.2–023539 05 38 18.34 –02 35 38.5 15.29 0.054
[BMZ2001] S Ori J053821.3–023336 05 38 21.38 –02 33 36.2 15.31 0.053
[SWW2004] J053822.999–023649.48 05 38 23.07 –02 36 49.4 13.73 0.200
[SWW2004] J053823.351–022534.51 05 38 23.34 –02 25 34.6 13.66 0.212
[BZR99] S Ori 18 05 38 25.68 –02 31 21.6 14.59 0.093
[BZR99] S Ori 65 05 38 26.10 –02 23 05.0 20.30 0.005
[BZR99] S Ori 29 05 38 29.62 –02 25 14.2 14.79 0.077
[FPS2006] NX 46 05 38 32.13 –02 32 43.1 13.16 0.313
[BZR99] S Ori 22 05 38 35.35 –02 25 22.2 14.59 0.093
[HHM2007] 633 05 38 38.12 –02 32 02.6 15.06 0.053
[KJN2005] 65 05 38 39.76 –02 32 20.3 14.94 0.074
[BZR99] S Ori 6 05 38 47.66 –02 30 37.4 13.39 0.263
[BZR99] S Ori 15 05 38 48.10 –02 28 53.6 14.37 0.116
[KJN2005] 8 05 38 50.78 –02 36 26.7 13.06 0.337
[MJO2008] J053852.6–023215 05 38 52.63 –02 32 15.5 16.18 0.028
[SWW2004] J053854.916–022858.24 05 38 54.93 –02 28 58.3 13.72 0.200
[BZR99] S Ori 71 05 39 00.30 –02 37 05.8 17.19 0.018
[KJN2005] 9 05 39 01.16 –02 36 38.8 13.51 0.242
[BMZ2001] S Ori J053902.1–023501 05 39 01.94 –02 35 02.9 14.74 0.075
[BZR99] S Ori 51 05 39 03.20 –02 30 20.0 17.16 0.018
[BZR99] S Ori 58 05 39 03.60 –02 25 36.0 18.42 0.011
[BZR99] S Ori 17 05 39 04.49 –02 38 35.3 14.71 0.080
[BZR99] S Ori 20 05 39 07.61 –02 29 05.7 14.90 0.076
[BZR99] S Ori 8 05 39 08.09 –02 28 44.8 14.07 0.155
[BZR99] S Ori 7 05 39 08.22 –02 32 28.4 13.77 0.194
[BMZ2001] S Ori J053911.4–023333 05 39 11.40 –02 33 32.8 14.41 0.100
[BMZ2001] S Ori J053912.8–022453 05 39 12.89 –02 24 53.5 16.68 0.022
[BZR99] S Ori 30 05 39 13.08 –02 37 50.9 15.20 0.059
[HHM2007] 1075 05 39 29.35 –02 27 21.0 13.10 0.326
[BZR99] S Ori 21 05 39 34.33 –02 38 46.9 14.69 0.090
[BZR99] S Ori 60 05 39 37.50 –02 30 42.0 19.02 0.008
[BZR99] S Ori 62 05 39 42.05 –02 30 31.6 19.14 0.008
[BMZ2001] S Ori J053950.6–023414 05 39 50.56 –02 34 13.7 13.62 0.219
[BMZ2001] S Ori J053954.2–022733 05 39 54.20 –02 27 32.7 13.45 0.252
[BMZ2001] S Ori J053954.3–023720 05 39 54.32 –02 37 18.9 14.69 0.090
[BMZ2001] S Ori J053956.4–023804 05 39 56.45 –02 38 03.5 13.30 0.281

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