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Table 1

X-ray and optical properties of sources identified with known cluster members and candidates.

LOX Identificationa log LXb log LX/Lbol V R I J H Ks Mass Sp.T Disc Spd
(erg s-1) (mag) (mag) (mag) (mag) (mag) (mag) (M⊙) classc
1 2M J05340691+1001005 30.52*  −3.70 11.82 11.31 10.83 10.19 9.74 9.59 1.72 ... - -
12 DM 9 30.15*  −3.26 14.21 13.46 12.77 11.84 11.23 11.06 1.10 ... - s
16 DM 11 29.89  −3.08 16.42 15.17 13.99 12.46 11.73 11.49 0.42 ... III s
17 DM 12 30.40*  −2.77 15.91 14.57 13.47 12.05 11.32 11.09 0.48 ... III s
19 DM 14 30.02*  −3.16 15.09 14.17 13.31 12.07 11.36 11.19 0.78 ... - s
21 DM 16 30.03  −2.99 16.08 15.02 13.86 12.37 11.66 11.43 0.44 ... - s
26 DM 18 30.57*  −2.94 14.01 13.25 12.51 11.44 10.80 10.64 1.06 ... - s
27 LOri 068 29.47  −3.07 19.28 16.76 15.20 13.52 12.90 12.63 0.29 M5.0 III s
29 DM 19 29.91*  −3.16 15.79 14.78 13.72 12.42 11.72 11.54 0.50 ... - s
31 DM 22 30.26*  −2.78 15.58 14.70 13.75 12.43 11.77 11.56 0.63 ... - s
37 LOri 075 28.69  −3.87 ... 16.95 15.23 13.40 12.79 12.53 0.26 M5.0 III -
38 LOri-SOC-1 28.87  −3.14 ... ... 16.39 14.59 14.16 13.80 0.20 ... - -
41 LOri 050 29.29  −3.49 ... 15.90 14.54 12.88 12.24 11.95 0.36 M4.5 II a s
42 LOri-SOC-2 28.93  −3.30 ... ... 16.21 14.27 13.67 13.30 0.16 ... - -
44 LOri 024 29.85*  −3.32 ... 14.43 13.45 12.14 11.45 11.22 0.58 ... III s
46 HD 245140 29.91*  −5.34 9.22 9.32 9.24 8.91 8.83 8.77 2.60 B9 no disc -
47 LOri 056 28.96  −3.71 ... 16.43 14.87 13.21 12.57 12.27 0.30 M4.5 III s
55 LOri 043 29.46  −3.46 ... 15.46 14.16 12.71 12.02 11.74 0.38 ... III s
62 DM 24 29.01  −4.84 12.77 12.24 11.75 11.01 10.53 10.44 1.30 ... - s
65 LOri 066 28.78  −3.71 ... 17.12 15.40 13.51 12.90 12.65 0.26 ... III s
66 DM 25 29.78  −3.38 15.40 14.26 13.38 12.26 11.56 11.30 0.74 ... III s
67 LOri 045 29.94*  −2.95 ... 15.56 14.23 12.77 12.10 11.84 0.38 ... III s
70 λ Ori C 29.98  −4.42 11.2 ... ... 9.39 9.11 9.01 2.0 F8 - -
71 λ Ori AB 32.31*  −6.73 3.53 3.58 3.65 3.74 3.77 3.88 26.8 O8III no disk -
73 DM 26 30.56*  −3.26 12.92 12.33 11.80 10.95 10.43 10.30 1.42 ... - s
75 HD 245185 28.81  −6.21 9.96 9.92 9.82 9.29 8.76 8.02 2.20 A5 HAeBe -
78 LOri 057 29.06  −3.55 ... 16.63 15.04 13.41 12.77 12.49 0.29 M5.5 III s
80 LOri 048 29.55  −3.27 ... 15.78 14.41 12.89 12.20 11.93 0.36 ... EV n s
81 LOri 016 29.92  −3.33 ... 14.07 13.18 11.96 11.28 11.05 0.71 ... III s
82 LOri 019 30.07  −3.16 ... 14.33 13.31 12.02 11.32 11.07 0.54 ... III -
84 DM 29 29.31  −3.68 16.76 15.25 13.97 12.55 11.84 11.61 0.39 ... III s
85 LOri 062 28.78  −3.75 17.94 16.62 15.16 13.63 13.00 12.72 0.31 ... II n s
87 LOri 006 30.38*  −3.03 ... 13.55 12.75 11.54 10.86 10.65 0.90 ... III -
89 DM 30 29.55  −3.35 16.46 15.32 14.16 12.80 12.06 11.83 0.44 ... - s
91 LOri 065 28.99  −3.47 ... 16.89 15.37 13.82 13.12 12.84 0.29 ... III s
93 LOri 061 29.06  −3.47 ... 16.58 15.15 13.53 12.83 12.52 0.32 ... II a s
94 DM 32 29.49  −3.29 16.73 15.71 14.49 13.07 12.42 12.16 0.39 ... - s
99 2M J05351974+0947476 30.82*  −3.37 11.85 11.36 10.93 10.28 9.90 9.73 1.40 ... - -
100 DM 33 30.54*  −2.83 16.18 15.10 13.97 12.44 11.64 11.18 0.46 ... II a s
102 LOri 060 28.95  −3.59 18.21 16.56 15.14 13.60 12.96 12.66 0.32 M4.5 III s
106 LOri 055 29.59  −3.09 ... 16.12 14.76 13.18 12.48 12.25 0.36 M4.5 III s
108 DM 34 29.39  −3.44 16.80 15.68 14.38 12.89 12.14 11.92 0.38 ... - s
110 DM 35 30.08*  −2.99 15.43 14.48 13.61 12.31 11.63 11.46 0.77 ... - s
114 DM 36 30.34  −2.75 16.21 14.89 13.69 12.21 11.46 11.07 0.42 ... II a s
125 LOri 080 29.06  −3.14 ... 17.51 16.01 13.80 13.20 12.89 0.28 M5.5 EV a s
128 DM 38 29.50  −3.46 17.22 15.55 14.10 12.50 11.86 11.59 0.35 ... III s
135 DM 39 30.24*  −2.79 15.87 14.82 13.81 12.45 11.80 11.50 0.55 ... III s
137 DM 40 29.18  −3.54 17.23 16.01 14.66 13.23 12.52 12.27 0.36 ... - s
144 DM 41 29.81  −3.15 16.76 15.38 14.06 12.55 11.88 11.59 0.38 ... III s
147 LOri 083 28.88  −3.33 ... 17.56 16.02 14.26 13.64 13.37 0.24 ... III s
151 LOri 004 29.68  −3.82 15.04 13.71 12.65 11.36 10.78 10.55 0.50 ... III -
156 DM 44 30.06  −3.14 15.69 14.41 13.38 12.10 11.41 11.16 0.53 ... III s
159 LOri 064 29.41  −3.05 18.15 16.78 15.34 13.78 13.10 12.85 0.30 ... EV s
160 LOri 054 29.71  −3.00 17.86 16.19 14.73 13.19 12.51 12.27 0.33 ... III s
161 DM 45 30.26  −3.60 12.89 12.28 11.69 10.94 10.38 10.23 1.48 ... - s
162 DM 46 30.63*  −2.82 14.43 13.39 12.65 11.42 10.72 10.52 1.05 ... III s
163 DM 47 29.48  −3.38 17.41 15.91 14.38 12.73 12.10 11.83 0.33 ... III s
166 DM 51 30.45  −2.94 14.86 13.60 12.79 11.55 10.86 10.65 0.88 ... III s

Notes. 

(a)

Identifications labeled DM, LOri and LOri-SOC are from Dolan & Mathieu (1999), Barrado y Navascués et al. (2004) and Bouy et al. (2009), respectively. The 2MASS objects (2M) are stars X2 and X4 from Stone & Taam (1985).

(b)

X-ray luminosity in the 0.3 − 8 keV band; values marked with an asterisk are derived from spectral fits.

(c)

Disk classification from Barrado y Navascués et al. (2007) and Hernández et al. (2009); for stars with discs (II or EV) we also indicate whether there is spectroscopic evidence for accretion (a) or non accretion (n).

(d)

An “s” in this column indicates spectroscopically-confirmed members (i.e. objects with spectroscopic youth features and radial velocity consistent with membership).

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