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.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/622006 |
| Date | 02 September 2016 |
| Creators | Ammons, S. Mark, Garcia, E. Victor, Salama, Maissa, Neichel, Benoit, Lu, Jessica, Marois, Christian, Macintosh, Bruce, Savransky, Dmitry, Bendek, Eduardo, Guyon, Olivier, Marin, Eduardo, Garrel, Vincent, Sivo, Gaetano |
| Contributors | Univ Arizona, Lawrence Livermore National Lab. (United States), Lawrence Livermore National Lab. (United States), Univ. of Hawaii (United States), Aix Marseille Univ., CNRS, LAM (France), Univ. of California, Berkeley (United States), National Research Council of Canada (Canada), Stanford Univ. (United States), Cornell Univ. (United States), NASA Ames Research Ctr. (United States), Univ. of Arizona (United States), Gemini Observatory (Chile), Gemini Observatory (Chile), Gemini Observatory (Chile) |
| Publisher | SPIE-INT SOC OPTICAL ENGINEERING |
| Source Sets | University of Arizona |
| Language | English |
| Detected Language | English |
| Type | Article |
| Rights | © 2016 SPIE |
| Relation | http://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.2233775 |
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