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

H. Bouy; J.H.V. Girard; E.L. Martin; N. Huelamo; P.W. Lucas

doi:10.1051/0004-6361/201015289

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

H. Bouy, J.H.V. Girard, E.L. Martin, N. Huelamo, P.W. Lucas

Centre for Astrophysics Research

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Abstract

Context: With a spectral type of T10, UGPS J072227.51-054031.2 is one of the coolest objects known to date in the solar neighborhood. Aims: Multiple systems are relatively common among early and mid-T dwarfs. We search for faint and close companions around UGPS J072227.51-054031.2. Methods: We have obtained high spatial resolution images in the H and Ks bands using adaptive optics at the Very Large Telescope. Results: 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 19.4 mag at separation larger than 50 mas, and H 21.4 mag at separation larger than 01.

Original language	English
Journal	Astronomy and Astrophysics
Volume	526
Issue number	7
DOIs	https://doi.org/10.1051/0004-6361/201015289
Publication status	Published - 2011

Keywords

Binaries: general
brown dwarfs
techniques: high angular resolution

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title = "Adaptive optics observations of the T10 ultracool dwarf UGPS J072227.51-054031.2",

abstract = "Context: With a spectral type of T10, UGPS J072227.51-054031.2 is one of the coolest objects known to date in the solar neighborhood. Aims: Multiple systems are relatively common among early and mid-T dwarfs. We search for faint and close companions around UGPS J072227.51-054031.2. Methods: We have obtained high spatial resolution images in the H and Ks bands using adaptive optics at the Very Large Telescope. Results: 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 19.4 mag at separation larger than 50 mas, and H 21.4 mag at separation larger than 01.",

keywords = "Binaries: general, brown dwarfs, techniques: high angular resolution",

author = "H. Bouy and J.H.V. Girard and E.L. Martin and N. Huelamo and P.W. Lucas",

note = "Original article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory",

year = "2011",

doi = "10.1051/0004-6361/201015289",

language = "English",

volume = "526",

journal = "Astronomy & Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

number = "7",

}

TY - JOUR

T1 - Adaptive optics observations of the T10 ultracool dwarf UGPS J072227.51-054031.2

AU - Bouy, H.

AU - Girard, J.H.V.

AU - Martin, E.L.

AU - Huelamo, N.

AU - Lucas, P.W.

N1 - Original article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory

PY - 2011

Y1 - 2011

N2 - Context: With a spectral type of T10, UGPS J072227.51-054031.2 is one of the coolest objects known to date in the solar neighborhood. Aims: Multiple systems are relatively common among early and mid-T dwarfs. We search for faint and close companions around UGPS J072227.51-054031.2. Methods: We have obtained high spatial resolution images in the H and Ks bands using adaptive optics at the Very Large Telescope. Results: 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 19.4 mag at separation larger than 50 mas, and H 21.4 mag at separation larger than 01.

AB - Context: With a spectral type of T10, UGPS J072227.51-054031.2 is one of the coolest objects known to date in the solar neighborhood. Aims: Multiple systems are relatively common among early and mid-T dwarfs. We search for faint and close companions around UGPS J072227.51-054031.2. Methods: We have obtained high spatial resolution images in the H and Ks bands using adaptive optics at the Very Large Telescope. Results: 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 19.4 mag at separation larger than 50 mas, and H 21.4 mag at separation larger than 01.

KW - Binaries: general

KW - brown dwarfs

KW - techniques: high angular resolution

U2 - 10.1051/0004-6361/201015289

DO - 10.1051/0004-6361/201015289

M3 - Article

VL - 526

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

SN - 0004-6361

IS - 7

ER -

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

Abstract

Keywords

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