Show simple item record

dc.contributor.authorBedin, L. R.
dc.contributor.authorPourbaix, D.
dc.contributor.authorApai, D.
dc.contributor.authorBurgasser, A. J.
dc.contributor.authorBuenzli, E.
dc.contributor.authorBoffin, H. M. J.
dc.contributor.authorLibralato, M.
dc.date.accessioned2017-09-14T21:19:58Z
dc.date.available2017-09-14T21:19:58Z
dc.date.issued2017-09
dc.identifier.citationHubble Space Telescope astrometry of the closest brown dwarf binary system – I. Overview and improved orbit★ 2017, 470 (1):1140 Monthly Notices of the Royal Astronomical Societyen
dc.identifier.issn0035-8711
dc.identifier.issn1365-2966
dc.identifier.doi10.1093/mnras/stx1177
dc.identifier.urihttp://hdl.handle.net/10150/625503
dc.description.abstractLocated 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.
dc.description.sponsorshipSTScI [GO-13748, GO-14330]en
dc.language.isoenen
dc.publisherOXFORD UNIV PRESSen
dc.relation.urlhttps://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stx1177en
dc.rights© 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Societyen
dc.subjectastrometryen
dc.subjectbinaries: visualen
dc.subjectbrown dwarfsen
dc.titleHubble Space Telescope astrometry of the closest brown dwarf binary system – I. Overview and improved orbit★en
dc.typeArticleen
dc.contributor.departmentUniv Arizona, Dept Astronen
dc.contributor.departmentUniv Arizona, Steward Observen
dc.contributor.departmentUniv Arizona, Lunar & Planetary Laben
dc.identifier.journalMonthly Notices of the Royal Astronomical Societyen
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal published versionen
refterms.dateFOA2018-06-26T11:39:37Z
html.description.abstractLocated 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.


Files in this item

Thumbnail
Name:
Bedin_Hubble_Space_Telescope_a ...
Size:
1.132Mb
Format:
PDF
Description:
FInal Published Version

This item appears in the following Collection(s)

Show simple item record