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| Paper: |
Keck LGS-AO Imaging of Cool WISE Brown Dwarfs |
| Volume: |
448, 16th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun |
| Page: |
871 |
| Authors: |
Gelino, C. R.; Kirkpatrick, J. D.; Cushing, M. C.; Mainzer, A.; Griffith, R.; Skrutskie, M.; Eisenhardt, P.; Wright, E. L. |
| Abstract: |
The multiplicity properties of brown dwarfs are critical empirical constraints for formation theories, while multiples themselves provide unique opportunities to test
evolutionary and atmospheric models and examine empirical trends. Studies using high-resolution imaging can not only uncover faint companions, but it can also be used to determine dynamical mass through long-term monitoring of binary systems. Targeting the coolest brown dwarfs has the added benefit that any faint, and therefore cooler, companions will be one step closer to finding an elusive “Y” dwarf. We have begun a search for the coolest brown dwarfs using preliminary data from the Wide-field Infrared Survey Explorer (WISE) and have confirmed many of the candidates as late T dwarfs. In order to search for companions to these objects, we are conducting observations using the Laser Guide Star Adaptive Optics system at Keck. In this paper we present the preliminary results of that search, including a faint companion to a T9. |
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