Using the Keck II telescope, astronomers have performed near-infrared spectroscopic observations of a nearby brown dwarf known as CWISE J105512.11+544328.3, or W1055+5443 for short. Results of the observational campaign, presented October 14 on the pre-print server arXiv, reveal that this object belongs to the rare class of ultracool brown dwarfs, dubbed Y dwarfs.
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Source: Phys.org