We report on initial results from the largest infrared AO direct imaging survey searching for wide orbit (≳ 100 AU) massive exoplanets and brown dwarfs as companions around young nearby stars using Robo-AO at the 2.1-m telescope on Kitt Peak, Arizona. The occurrence rates of these rare substellar companions are critical to furthering our understanding of the origin of planetary-mass companions on wide orbits. The observing efficiency of Robo-AO allows us to conduct a survey an order of magnitude larger than previously possible. We commissioned a low-noise high-speed SAPHIRA near-infrared camera to conduct this survey and report on its sensitivity, performance, and data reduction process.
Maïssa Salama, James Ou, Christoph Baranec, Michael C. Liu, Brendan P. Bowler, Reed Riddle, Dmitry Duev, Donald Hall, Dani Atkinson, Sean Goebel, Mark Chun, Shane Jacobson, Charles Lockhart, Eric Warmbier, Shrinivas Kulkarni, and Nicholas M. Law, "LASSO: Large Adaptive optics Survey for Substellar Objects using the new SAPHIRA detector on Robo-AO," Proc. SPIE 10703, Adaptive Optics Systems VI, 1070307 (Presented at SPIE Astronomical Telescopes + Instrumentation: June 10, 2018; Published: 10 July 2018); https://doi.org/10.1117/12.2313885.
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