Characterization of the known T-type dwarfs towards the σ Orionis cluster

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Table 2

H-band (MKO system) and H-band methane photometry.

Object	H	H − CH_4on
	(mag)	(mag)

S Ori 70	20.07 ± 0.08	−0.60 ± 0.16
S Ori 73	20.58 ± 0.05^a	−0.11 ± 0.15
S Ori J053804.65−021352.5	19.24 ± 0.19^b	−0.28 ± 0.21

2MASS J072718.24+171001.2	15.65 ± 0.06	−0.71 ± 0.07
2MASS J075547.95+221216.9	15.71 ± 0.04	−0.16 ± 0.07
2MASS J075840.37+324724.5	14.21 ± 0.04	0.04 ± 0.07
2MASS J104753.85+212423.4	15.75 ± 0.02	−0.53 ± 0.04
2MASS J110611.97+275422.5	14.23 ± 0.05	0.05 ± 0.07
2MASS J120747.17+024424.9	14.56 ± 0.10	0.32 ± 0.11
2MASS J152039.74+354621.0	14.58 ± 0.05^c	0.22 ± 0.15
2MASS J154614.61+493211.4	15.35 ± 0.12	0.02 ± 0.13
2MASS J000013.54+255418.0	14.79 ± 0.05	0.01 ± 0.05
2MASS J003451.57+052305.0	15.56 ± 0.03	−0.56 ± 0.06
ULAS J081948.10+073323.2	18.55 ± 0.05	−0.31 ± 0.08
ULAS J085139.00+005341.0	18.94 ± 0.04	−0.03 ± 0.05
ULAS J085342.94+000651.8	19.21 ± 0.09	0.99 ± 0.13
ULAS J085910.69+101017.1	18.58 ± 0.06	−1.01 ± 0.18
ULAS J094516.40+075545.6	17.90 ± 0.04	−0.20 ± 0.05

Notes.

^(a)

Taken from Peña Ramírez et al. (2011).

^(b)

Taken from Peña Ramírez et al. (2012).

^(c)

Taken from the 2MASS catalog and converted into the Manua Kea Observatory (MKO) system.

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