Deep search for companions to probable young brown dwarfs - VLT/NACO adaptive optics imaging using IR wavefront sensing

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Table 1

Description of the target properties.

Name	α	δ	μ _α ^a	μ _δ ^a	V _rad	SpT	d ^a	J	K	Ref.^b
	[J2000]	[J2000]	(mas/yr)	(mas/yr)	(km s^-1)		(pc)	(mag)	(mag)

2MASS0435-14	04 35 14.6	–14 14 47	9 ± 14	16 ± 14		M6δ ± 1	8.6 ± 1.0	11.88	9.95	1
SDSS0443+00	04 43 37.6	+00 02 05	28 ± 14	−99 ± 14		M9γ	16.2 ± 2.1	12.51	11.22	1, 2, 3, 4
2MASS0608-27	06 08 52.8	–27 53 58	8.9 ± 3.5	10.7 ± 3.5	24 ± 1	M8.5γ		13.59	12.37	1, 5, 6
2MASS0652-57	06 52 48.5	–57 41 38	0.1 ± 3.4	29.2 ± 3.3		M8β		13.63	12.45	6, 7

Notes.

^(a)

Distances derived from spectrophotometry with M_J estimated from the spectral type/M_J calibration from Cruz et al. (2003) for 2MASS0435-14 and SDSS0443+00. Proper motion and parallax measurements from Faherty et al. (2012) for 2MASS0608-27 and 2MASS0652-57.

^(b)

References: (1) Cruz et al. (2003), (2) Cruz et al. (2007), (3) Reid et al. (2008), (4) Reiner & Basri (2009), (5) Rice et al. (2010), (6) Faherty et al. (2012), and (7) Reid et al. (2008).

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