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Visual orbit of the low-mass binary GJ 164 AB

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dc.contributor.authorMartinache, Fen_AU
dc.contributor.authorRojas-Ayala, Barbaraen_AU
dc.contributor.authorLloyd, J Pen_AU
dc.contributor.authorTuthill, Peter Gen_AU
dc.contributor.authorIreland, Michaelen_AU
dc.date.accessioned2015-12-10T23:23:24Z
dc.date.issued2009
dc.date.updated2016-02-24T09:59:31Z
dc.description.abstractWe report seven successful observations of the astrometric binary GJ 164 AB system with aperture masking interferometry. The companion, with a near-infrared contrast of 5:1 was detected beyond the formal diffraction limit. Combined with astrometric observations from the literature, these observations fix the parallax of the system, and allow a model-independent mass determination of both components.We find the mass of GJ 164 B to be 0.096±0.008M⊙. With data taken with the newly commissioned TripleSpec spectrograph, we examine GJ 164's near-infrared spectral features and compare them to a sample of M dwarfs of known metallicity. Models are not consistent with color and mass, requiring a very young age to accommodate a secondary too luminous, a scenario ruled out by the kinematics.
dc.identifier.issn0004-637X
dc.identifier.urihttp://hdl.handle.net/1885/66945
dc.publisherIOP Publishing
dc.sourceAstrophysical Journal, The
dc.subjectKeywords: Brown dwarfs; Stars: low-mass; Techniques: high angular resolution; Techniques: spectroscopic
dc.titleVisual orbit of the low-mass binary GJ 164 AB
dc.typeJournal article
local.bibliographicCitation.issue2
local.bibliographicCitation.lastpage1190
local.bibliographicCitation.startpage1183
local.contributor.affiliationMartinache, F, Cornell University
local.contributor.affiliationRojas-Ayala, Barbara, Cornell University
local.contributor.affiliationIreland, Michael, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationLloyd, J P, Cornell University
local.contributor.affiliationTuthill, Peter G, University of Sydney
local.contributor.authoruidIreland, Michael, u5544212
local.description.embargo2037-12-31
local.description.notesImported from ARIES
local.identifier.absfor020110 - Stellar Astronomy and Planetary Systems
local.identifier.ariespublicationU3488905xPUB1372
local.identifier.citationvolume695
local.identifier.doi10.1088/0004-637X/695/2/1183
local.identifier.scopusID2-s2.0-68149155084
local.type.statusPublished Version

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