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

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    Author
    Ammons, S. Mark cc
    Garcia, E. Victor
    Salama, Maissa
    Neichel, Benoit
    Lu, Jessica
    Marois, Christian cc
    Macintosh, Bruce cc
    Savransky, Dmitry cc
    Bendek, Eduardo
    Guyon, Olivier
    Marin, Eduardo
    Garrel, Vincent
    Sivo, Gaetano
    Show allShow less
    Affiliation
    Univ Arizona
    Issue Date
    2016-09-02
    Keywords
    astrometry
    adaptive optics
    multi-conjugate
    tomography
    M92
    NGC 1851
    brown dwarf
    
    Metadata
    Show full item record
    Publisher
    SPIE-INT SOC OPTICAL ENGINEERING
    Citation
    S. 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/10.1117/12.2233775
    Journal
    ADAPTIVE OPTICS SYSTEMS V
    Rights
    © 2016 SPIE.
    Collection Information
    This 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.
    Abstract
    ELTs 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.
    ISSN
    0277-786X
    DOI
    10.1117/12.2233775
    Version
    Final published version
    Additional Links
    http://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.2233775
    ae974a485f413a2113503eed53cd6c53
    10.1117/12.2233775
    Scopus Count
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    UA Faculty Publications

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