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تسجيل مستخدم جديدSubstellar Multiplicity Throughout the Ages
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Substellar multiplicity is a key outcome of the formation process. The biggest challenge for the next decade will be to distinguish between the formation history, environmental conditions, and dynamical evolution leading to the least massive brown dwarfs and the most massive planets at the tail ends of their mass functions. In this white paper, we advocate for a comprehensive characterization of both the statistical distributions of the population of ultracool dwarf multiple systems and the fundamental properties of their individual components as a function of age. A space-based precision astrometry mission in near-infrared wavelengths would provide the necessary measurements to identify and characterize age-calibrated populations of multiple systems.
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We present the first high-angular resolution survey for multiple systems among very low-mass stars and brown dwarfs in the Hyades open cluster. Using the Keck,II adaptive optics system, we observed a complete sample of 16 objects with estimated masse
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