Discovery of the Binarity of Gliese 229B, and Constraints on the System's Properties

We present two epochs of radial velocities of the first imaged T dwarf Gliese 229 B obtained with Keck/NIRSPEC. The two radial velocities are discrepant with one another and with the radial velocity of the host star, at ≈11 σ significance. This points to the existence of a previously postulated, but...

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Bibliographic Details
Main Authors: Samuel Whitebook, Timothy D. Brandt, G. Mirek Brandt, Emily C. Martin
Format: Article
Language:English
Published: IOP Publishing 2024-01-01
Series:The Astrophysical Journal Letters
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Online Access:https://doi.org/10.3847/2041-8213/ad7714
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