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Table 1

Positions, photometry, and derived parameters of the observed objects.

Name RA Dec V UB BV K JH HK E (BV) Teff M V log  L

ARDB 54a 4:54:43.5 70:21:27.8 12.77 0.21 0.25 11.55 0.34 0.81 0.15 10000 6.2 4.57
ARDB 54b 12.71 0.14 0.22
ARDB 54c 12.71 0.16 0.25
N181 5:27:47.6 71:48:52.6 14.24 0.71 0.10 11.77 0.74 0.98 0.15 17000 4.7 4.45
Hen S–59a 5:45:29.5 68:11:45.7 14.02 1.14 0.49 11.48 0.66 0.96 0.15 19000 4.9 4.64
Hen S–59d 14.41 1.00 0.21 11.39 0.71 1.09 0.05 14000 4.2 4.00
Hen S–137a 5:41:43.7 69:37:38.3 14.11 0.69 0.09 11.14 0.90 1.10 0.15 17000 4.8 4.56
Hen S–137d 14.04 0.56 0.16 11.11 0.82 1.16 0.17 13000 5.0 4.20

Notes. Column information: 1 – object ID; 2, 3 – coordinates for the epoch 2000.0; 4–9 – optical and near-IR photometry; 10 – color-excess; 11 – effective temperature in K, 12 – absolute visual magnitude, 13 – luminosity in solar units. The reddenings derived here are discussed in Sect. 3.2. We assume uncertainties of the Teff of ~1000 K (2000 K in Gummersbach et al. 1995) and 0.2 dex in the luminosity (the same as in Gummersbach et al. 1995). The luminosity uncertainty for Hen S–59 is set to 0.3 dex (see Sect. 3).

(a)

UBV data from Zaritsky et al. (2004) and JHK data from 2MASS,

(b)

UBV data from Ardeberg et al. (1972),

(c)

UBV data from Massey (2002),

(d)

UBVJHK data, reddening, and absolute visual magnitudes from Gummersbach et al. (1995).

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