Brown dwarfs are objects between planets and stars. Astronomers divide them into 3 categories according to their temperature - L, T, Y. Their relatively low temperatures and brightness allow them to stay hidden for most part. Only the most powerful infrared telescopes are able to see them and that is where James Webb Space Telescope comes in.
Astronomers identified 87 new distant galaxies in data from James Webb Space Telescope’s first year of observations. All of them have a red shift higher than 11 and up to 20 which indicates great distance and age.
Astronomers led by Kevin Stevenson and Jacob Lustig-Yaeger report discovery of a new exoplanet around red dwarf star LHS 475. First sign of the exoplanet transit signal was found in data from the TESS space telescope. Astronomers then used James Webb to confirm its existence.
Astronomers identified the new substellar object in a JWST image of galaxy cluster Abell 2744. The brown dwarf GLASS-JWST-BD1 is a single object more than 2 thousand light years away. It has about 30 jupiter masses (0.03 solar mass).
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25. 12. 2021 (Ariane 5)
08. 02 2023
Brown dwarfs
