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Precision astrometry with adaptive optics: constraints on the mutual orbit of Luhman 16AB from GeMS

dc.contributor.authorAmmons, S. Mark
dc.contributor.authorGarcia, E. Victor
dc.contributor.authorSalama, Maissa
dc.contributor.authorNeichel, Benoit
dc.contributor.authorLu, Jessica
dc.contributor.authorMarois, Christian
dc.contributor.authorMacintosh, Bruce
dc.contributor.authorSavransky, Dmitry
dc.contributor.authorBendek, Eduardo
dc.contributor.authorGuyon, Olivier
dc.contributor.authorMarin, Eduardo
dc.contributor.authorGarrel, Vincent
dc.contributor.authorSivo, Gaetano
dc.date.accessioned2017-01-18T19:19:56Z
dc.date.available2017-01-18T19:19:56Z
dc.date.issued2016-09-02
dc.identifier.citationS. Mark Ammons ; E. Victor Garcia ; Maissa Salama ; Benoit Neichel ; Jessica Lu ; Christian Marois ; Bruce Macintosh ; Dmitry Savransky ; Eduardo Bendek ; Olivier Guyon ; Eduardo Marin ; Vincent Garrel and Gaetano Sivo " Precision astrometry with adaptive optics: constraints on the mutual orbit of Luhman 16AB from GeMS ", Proc. SPIE 9909, Adaptive Optics Systems V, 99095T (September 2, 2016); doi:10.1117/12.2233775; http://dx.doi.org/10.1117/12.2233775en
dc.identifier.issn0277-786X
dc.identifier.doi10.1117/12.2233775
dc.identifier.urihttp://hdl.handle.net/10150/622006
dc.description.abstractELTs equipped with MCAO systems will be powerful astrometric tools in the next two decades. With sparse-field precisions exceeding 30 uas for V > 18, the ELTs will surpass even GAIA's per-epoch precision for faint stars (V > 12). We present results from an ongoing astrometry program with Gemini GeMS and discuss synergies with WFIRST and GAIA. First, we present a fit to the relative orbit of the individual L/T components of Luhman16 AB, the nearest brown dwarf binary known. Exploiting GeMS' wide field of view to image reference stars, we are able to track the relative motion to better than 0.2 mas. We find that a mutual Keplerian orbit with no perturbing planets fits the binary separation to within the measurement errors, ruling out companions down to 14 earth masses for certain orbits and periods.
dc.language.isoenen
dc.publisherSPIE-INT SOC OPTICAL ENGINEERINGen
dc.relation.urlhttp://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.2233775en
dc.rights© 2016 SPIE.en
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectastrometryen
dc.subjectadaptive opticsen
dc.subjectmulti-conjugateen
dc.subjecttomographyen
dc.subjectM92en
dc.subjectNGC 1851en
dc.subjectbrown dwarfen
dc.titlePrecision astrometry with adaptive optics: constraints on the mutual orbit of Luhman 16AB from GeMSen
dc.typeArticleen
dc.contributor.departmentUniv Arizonaen
dc.identifier.journalADAPTIVE OPTICS SYSTEMS Ven
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
dc.contributor.institutionLawrence Livermore National Lab. (United States)
dc.contributor.institutionLawrence Livermore National Lab. (United States)
dc.contributor.institutionUniv. of Hawaii (United States)
dc.contributor.institutionAix Marseille Univ., CNRS, LAM (France)
dc.contributor.institutionUniv. of California, Berkeley (United States)
dc.contributor.institutionNational Research Council of Canada (Canada)
dc.contributor.institutionStanford Univ. (United States)
dc.contributor.institutionCornell Univ. (United States)
dc.contributor.institutionNASA Ames Research Ctr. (United States)
dc.contributor.institutionUniv. of Arizona (United States)
dc.contributor.institutionGemini Observatory (Chile)
dc.contributor.institutionGemini Observatory (Chile)
dc.contributor.institutionGemini Observatory (Chile)
refterms.dateFOA2018-07-11T08:19:06Z
html.description.abstractELTs equipped with MCAO systems will be powerful astrometric tools in the next two decades. With sparse-field precisions exceeding 30 uas for V > 18, the ELTs will surpass even GAIA's per-epoch precision for faint stars (V > 12). We present results from an ongoing astrometry program with Gemini GeMS and discuss synergies with WFIRST and GAIA. First, we present a fit to the relative orbit of the individual L/T components of Luhman16 AB, the nearest brown dwarf binary known. Exploiting GeMS' wide field of view to image reference stars, we are able to track the relative motion to better than 0.2 mas. We find that a mutual Keplerian orbit with no perturbing planets fits the binary separation to within the measurement errors, ruling out companions down to 14 earth masses for certain orbits and periods.


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