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dc.contributor.author
Bedin, Luigi R.
dc.contributor.author
Pourbaix, Dimitri
dc.contributor.author
Apai, Daniel
dc.contributor.author
Burgasser, Adam J.
dc.contributor.author
Buenzli, Esther
dc.contributor.author
Boffin, Henri M.J.
dc.contributor.author
Libralato, Mattia
dc.date.accessioned
2022-07-12T14:02:50Z
dc.date.available
2017-10-06T03:30:54Z
dc.date.available
2017-11-22T14:22:36Z
dc.date.available
2022-07-12T14:02:50Z
dc.date.issued
2017-08
dc.identifier.issn
0035-8711
dc.identifier.issn
1365-2966
dc.identifier.other
10.1093/mnras/stx1177
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/191666
dc.identifier.doi
10.3929/ethz-b-000191666
dc.description.abstract
Located at 2 pc, the L7.5+T0.5 dwarfs system WISE J104915.57−531906.1 (Luhman 16 AB) is the third closest system known to Earth, making it a key benchmark for detailed investigation of brown dwarf atmospheric properties, thermal evolution, multiplicity, and planet-hosting frequency. In the first study of this series – based on a multicycle Hubble Space Telescope (HST) program – we provide an overview of the project and present improved estimates of positions, proper motions, annual parallax, mass ratio, and the current best assessment of the orbital parameters of the A-B pair. Our HST observations encompass the apparent periastron of the binary at 220.5 ± 0.2 mas at epoch 2016.402. Although our data seem to be inconsistent with recent ground-based astrometric measurements, we also exclude the presence of third bodies down to Neptune masses and periods longer than a year.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Oxford University Press
en_US
dc.rights.uri
http://rightsstatements.org/page/InC-NC/1.0/
dc.subject
astrometry
en_US
dc.subject
binaries: visual
en_US
dc.subject
brown dwarfs
en_US
dc.title
Hubble Space Telescope astrometry of the closest brown dwarf binary system - I. Overview and improved orbit
en_US
dc.type
Journal Article
dc.rights.license
In Copyright - Non-Commercial Use Permitted
dc.date.published
2017-06-27
ethz.journal.title
Monthly Notices of the Royal Astronomical Society
ethz.journal.volume
470
en_US
ethz.journal.issue
1
en_US
ethz.journal.abbreviated
Mon. Not. R. Astron. Soc.
ethz.pages.start
1140
en_US
ethz.pages.end
1155
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.notes
It was possible to publish this article open access thanks to a Swiss National Licence with the publisher.
en_US
ethz.identifier.wos
ethz.publication.place
Oxford
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2017-10-06T03:31:07Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-11-22T14:22:39Z
ethz.rosetta.lastUpdated
2024-02-02T17:38:45Z
ethz.rosetta.versionExported
true
ethz.COinS
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