Unexpectedly old brown dwarf WISEA J153429.75-104303.3 detected nearby

3. 9. 2021

Amateur astronomer Dan Caselden discovered new brown dwarf WISEA J153429.75-104303.3 just 50 light years away. Spectroscopic analysis of its light shows peculiar emission lines, unseen in similar objects. Scientists think it could be caused by its chemical composition, which could in turn indicate its age. According to a new study in the Astrophysical Journal Letters magazine it could be 10-13 billions years old.

Brown dwarf

WISEA J153429.75-104303.3 could be twice as old as other known brown dwarfs. Scientists expect there are many more old brown dwarfs in our galaxy, but they are too faint to be seen with our current technology.

Related stars

Star Star type Distance
(light years)
part of star image
part of star image
WISEA J153429.75-104303.3 Brown dwarf 50.2 0
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