Home > slashdot > Astronomers Discover the Coolest Known Sub-Stellar Body

Astronomers Discover the Coolest Known Sub-Stellar Body

January 30th, 2010 01:46 admin Leave a comment Go to comments

Hugh Pickens writes “Science Daily reports that using the United Kingdom Infrared Telescope (UKIRT) in Hawaii, astronomers have discovered what may be the coolest sub-stellar body ever found outside our own solar system. Too small to be stars and with insufficient mass to maintain hydrogen-burning nuclear fusion reactions in their cores, ‘brown dwarfs‘ have masses smaller than stars but larger than gas giant planets like Jupiter, with an upper limit in between 75 and 80 Jupiter masses. ‘This looks like the fourth time in three years that the UKIRT has made a record breaking discovery of the coolest known brown dwarf, with an estimated temperature not far above 200 degrees Celsius,’ says Dr. Philip Lucas at the University of Hertfordshire. Due to their low temperature these objects are very faint in visible light, and are detected by their glow at infrared wavelengths. The object known as SDSS1416+13B is in a wide orbit around a somewhat brighter and warmer brown dwarf, SDSS1416+13A, and the pair is located between 15 and 50 light years from the solar system, which is quite close in astronomical terms.”

Source: Astronomers Discover the Coolest Known Sub-Stellar Body

Related Articles:

  1. Rogue Brown Dwarf Lurks In Our Cosmic Neighborhood
  2. Cooler-Than-Steam Brown Dwarf Blurs The Line Between Star & Planet
  3. Astronomers Discover Third-Closest Star System To Earth
  4. Astronomers Discover Earth-Sized Diamond
  5. Stellar Wormholes May Exist
blog comments powered by Disqus