Resolving the L/T transition binary SDSS J2052-1609 AB

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Table 1

Photometric properties of the resolved SDSS2052-1609 AB system.

Filter	Flux ratio	Δ mag	Comp. A	Comp. B	A + B
		[mag]	[mag]	[mag]	[mag]

F110W^a	0.787 ± 0.012	0.26 ± 0.02	17.77 ± 0.03	18.02 ± 0.03	17.14 ± 0.02
F170M^a	0.576 ± 0.005	0.60 ± 0.01	15.86 ± 0.02	16.46 ± 0.02	15.37 ± 0.02
J^b	0.908 ± 0.149	0.10 ± 0.18	17.00 ± 0.13	17.10 ± 0.13	16.30 ± 0.12
H^c	0.591 ± 0.007	0.57 ± 0.01	15.92 ± 0.12	16.49 ± 0.12	15.41 ± 0.12
K_S ^c	0.513 ± 0.005	0.72 ± 0.01	15.57 ± 0.15	16.30 ± 0.15	15.12 ± 0.15

J − H			1.08 ± 0.05	0.61 ± 0.05	0.88 ± 0.04
H − K_S			0.35 ± 0.19	0.19 ± 0.19	0.29 ± 0.19
J − K_S			1.43 ± 0.20	0.81 ± 0.20	1.17 ± 0.19

Notes.

^(a)

The NICMOS photometry is on the Arizona Vega System (M_Vega = 0.02);

^(b)

due to the lack of direct observations, the J-band magnitudes are based on the NICMOS photometry which were transformed from the Vega system into the 2MASS system as described in the text.

^(c)

based on 2MASS H,K_S photometry for the unresolved sources.

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