The object has a surface temperature 38% hotter than our host star.
indicating to some that it’s not a brown dwarf at all, but a rogue exoplanet.new paper
hosted on the preprint server arXiv describes a brown dwarf with an astoundingly quick orbit of just two hours. The dwarf was spotted by the Zwicky Transient Facility and has a mass 80 times that of Jupiter, with an effective temperature of about 1,691 K —quite cool compared to WD 0032-317B.. The exoplanet could be imaged because it was “at the boundary of a planet and a brown dwarf,” according to study author and Northwestern astronomer Jason Wang.
Perhaps astronomers will apply the same technique to brown dwarfs in the future, to better understand the systems the dwarfs occupy. Or, astronomers could train the Webb Space Telescope’s perceptive gaze on these irradiated-Jupiter analogues,
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