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W-Band Water-Absorption Survey of Young Brown Dwarfs in Rho Ophiuchi (L1688)
An observational survey that identifies very low-mass stars and young brown dwarfs in the L1688 core of the Rho Ophiuchi star-forming cloud by on-off imaging in a custom near-infrared filter centered on the 1.45 micron water-absorption band, then confirms membership with six-year proper motions tied to Gaia and characterizes mass, age, circumstellar disks, and magnetospheric accretion from each object's infrared spectral energy distribution.