2011A&A...526A..55B

Query : 2011A&A...526A..55B

2011A&A...526A..55B - Astronomy and Astrophysics, volume 526A, 55-55 (2011/2-1)

Adaptive optics observations of the T10 ultracool dwarf UGPS J072227.51-054031.2.

BOUY H., GIRARD J.H.V., MARTIN E.L., HUELAMO N. and LUCAS P.W.

Abstract (from CDS):

With a spectral type of T10, UGPS J072227.51-054031.2 is one of the coolest objects known to date in the solar neighborhood. Multiple systems are relatively common among early and mid-T dwarfs. We search for faint and close companions around UGPS J072227.51-054031.2. We have obtained high spatial resolution images in the H and K_s bands using adaptive optics at the Very Large Telescope. With a Strehl ratio in the range 10-15%, the final images allow us to rule out the presence of a companion brighter than H≲19.4mag at separation larger than 50 mas, and H≲21.4mag at separation larger than 0.1''.

Abstract Copyright: ∼

Journal keyword(s): binaries: general - brown dwarfs - techniques: high angular resolution

Nomenclature: Table 1, Figure 1 : [BGM2011b] JHHMMSS.ss+DDMMSS.s N=8

Simbad objects: 10

Full paper

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Number of rows : 10

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Sp type	#ref 1850 - 2023
1	[BGM2011b] J072226.97-054029.4	*	07 22 26.97	-05 40 29.4	~	1
2	[BGM2011b] J072227.02-054039.2	*	07 22 27.02	-05 40 39.2	~	1
3	[BGM2011b] J072227.28-054030.0	*	07 22 27.28	-05 40 30.0	~	1
4	[BGM2011b] J072227.34-054026.8	*	07 22 27.34	-05 40 26.8	~	1
5	WISE J072227.27-054029.9	BD*	07 22 27.51096	-05 40 31.2096	T9	74
6	[BGM2011b] J072227.56-054034.4	*	07 22 27.56	-05 40 34.4	~	1
7	2MASS J07222760-0540384	*	07 22 27.6018952248	-05 40 38.348869980	~	2
8	[BGM2011b] J072227.64-054033.0	*	07 22 27.64	-05 40 33.0	~	1
9	[BGM2011b] J072227.79-054034.7	*	07 22 27.79	-05 40 34.7	~	1
10	UCAC3 169-73338	*	07 22 28.4877349800	-05 40 37.795609992	~	1

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