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Table 1

Target star data.

Spectral K c Avb EW(Brγ)d K-type
Identifiera Typeb (mag) (mag) (Å) STDe Pem f Surveyg

CHSM 1715 M4.25 10.9 2.6 0.19 ± 0.35 * 0.00 IM
CHX 18N K6 7.77 0.12 0.36 ± 0.18 * 0.06 IM,RV
CHXR 14N K8 9.60 0.78 0.29 ± 0.20 * 0.00 IM,RV
CHXR 20 K6 8.88 3.9 0.31 ± 0.20 * 0.02 IM,RV
CHXR 21 M3 9.66 3.2 0.14 ± 0.29 0.00 IM,RV
CHXR 22E M3.5 10.0 6.5 0.25 ± 0.24 * 0.00 IM
CHXR 33 M2.5 ... 2.2 0.03 ± 0.15 * 0.00 IM
CHXR 35 M4.75 10.9 1.1 0.48 ± 0.31 0.01 IM
CHXR 48 M2.5 9.80 1.4 0.09 ± 0.27 0.00 IM,RV
CHXR 54 M1 9.50 0.59 0.55 ± 0.15 0.00 IM,RV
CHXR 55 K4.5 9.29 1.1 0.38 ± 0.23 0.02 IM,RV
CHXR 57 M2.75 10.0 0.67 0.37 ± 0.21 * 0.00 IM,RV
CHXR 84 M5.5 10.8 0.00 0.69 ± 0.28 0.11 IM
ESO-HA 553 M5.6 11.5 0.00 0.73 ± 0.28 0.13 IM
Hn 2 M5 9.99 1.9 0.16 ± 0.41 0.00 IM
Hn 5 M4.5 10.1 1.9 1.73 ± 0.21 1.0 IM,RV
Hn 7 M4.75 11.0 1.1 0.31 ± 0.32 0.00 IM
Hn 11 K8 9.44 7.1 1.37 ± 0.21 * 1.0 IM
Hn 17 M4 11.2 0.48 0.10 ± 0.30 0.00 IM,RV
ISO-ChaI 52 M4 10.6 1.1 0.10 ± 0.51 0.00 IM,RV
ISO-ChaI 76 M2.75 10.3 17 0.21 ± 0.20 0.01 IM
ISO-ChaI 80 M3 9.39 6.0 0.30 ± 0.25 * 0.00 IM,RV
ISO-ChaI 99 M4.5 10.3 0.00 0.16 ± 0.40 * 0.00 IM
ISO-ChaI 189 M1.25 8.67 20 2.50 ± 0.23 * 1.0 IM
ISO-ChaI 196 K7 9.16 19 0.07 ± 0.15 0.00 IM
ISO-ChaI 237 K5.5 8.62 6.8 0.48 ± 0.21 0.08 IM,RV
ISO-ChaI 250 M4.75 10.7 6.0 0.01 ± 0.58 * 0.00 IM
ISO-ChaI 274 M4.5 10.7 1.0 0.13 ± 0.34 * 0.00 IM
J11052472-7626209 M2.75 10.5 1.4 0.25 ± 0.17 0.00 IM
J11072022-7738111 M4.25 7.28 4.1 0.65 ± 0.17 * 0.65 IM
J11101153-7733521 M4.5 10.8 3.4 0.72 ± 0.66 * 0.00 IM
[LES2004] ChaI 423 M5 11.6 4.4 0.37 ± 0.38 0.00 IM
Ass Cha T2-4 M0.5 8.63 1.1 0.55 ± 0.25 * 0.07 IM,RV
Ass Cha T2-8 K4 7.31 0.00 0.53 ± 0.26 * 0.05 IM,RV
Ass Cha T2-10 M3.75 10.9 1.2 0.05 ± 0.43 * 0.00 IM,RV
Ass Cha T2-12 M4.5 10.5 0.00 0.03 ± 0.17 0.00 IM,RV
Ass Cha T2-20 M1.5 9.34 0.76 0.26 ± 0.25 * 0.00 IM,RV
Ass Cha T2-23 M4.25 10.0 0.23 3.19 ± 0.27 * 1.0 IM
Ass Cha T2-24 M0.5 9.38 1.8 0.21 ± 0.28 0.00 IM,RV
Ass Cha T2-25 M2.5 9.77 2.3 0.06 ± 0.17 0.00 IM,RV
Ass Cha T2-28 M0 8.26 8.2 1.24 ± 0.26 0.87 IM
Ass Cha T2-30 M2.5 9.89 4.5 1.59 ± 0.35 * 0.77 IM
Ass Cha T2-34 M3.75 10.0 2.1 0.25 ± 0.35 0.00 IM,RV
Ass Cha T2-35 K8 9.11 4.0 1.90 ± 0.21 * 1.0 IM,RV
Ass Cha T2-37 M5.25 11.3 0.67 0.41 ± 0.26 0.00 IM
Ass Cha T2-38 M0.5 9.46 1.3 1.22 ± 0.22 * 0.97 IM,RV
Ass Cha T2-40 K7 8.24 2.0 2.40 ± 0.17 * 1.0 IM,RV
Ass Cha T2-44 K5 6.08 4.7 5.08 ± 0.23 * 1.0 IM,RV
Ass Cha T2-47 M2 9.18 3.0 2.93 ± 0.18 * 1.0 IM,RV
Ass Cha T2-48 M3.75 10.0 0.72 5.73 ± 0.31 1.0 IM
Ass Cha T2-49 M2 8.87 0.95 1.25 ± 0.18 1.0 IM,RV
Ass Cha T2-50 M5 9.84 0.87 0.13 ± 0.34 * 0.00 IM,RV
Ass Cha T2-53 M1 9.13 1.9 0.31 ± 0.34 0.00 IM
Ass Cha T2-56 M0.5 9.23 0.1 0.83 ± 0.20 * 0.69 IM,RV

Notes.

(a)

Identifiers recognized by the Simbad Database. Names starting with “J” are 2MASS identifiers (Cutri et al. 2003).

(c)

From the 2MASS Point Source Catalog.

(d)

Negative equivalent width values indicate lines in emission.

(e)

Equivalent widths marked with an asterisk have been corrected for absorption of a telluric standard with spectral type K7 (see Sect. 2.3).

(f)

Probability for significant emission (see Sect. 3.2).

(g)

Target was observed as part of radial velocity (RV; Nguyen et al. 2012) and/or imaging (IM; Lafrenière et al. 2008) survey and no companions were found.

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