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Cloud on Brown Dwarf

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Using the technique Polarimetry astronomers have detected stripes of clouds that circle a Brown Dwarf. It is 6.5 light-years from Earth in the constellation of Vela. This technique was used for the first time for such detection.

Brown Dwarf also called failed stars are an intermediate between planets and stars. They form the same way as the stars do. Brown dwarfs usually have a mass less than 0.075 that of the Sun, or roughly 75 times that of Jupiter. Both stars and brown dwarfs produce energy by fusion of deuterium (a rare isotope of hydrogen) in their first few million years. The cores of stars then continue to contract and get hotter until they fuse hydrogen. However, brown dwarfs prevent further contraction because their cores are dense enough to hold themselves up with electron degeneracy pressure.

The brown dwarf discovered in 2013 is actually two brown dwarfs called Luhman 16AB. These are closest brown dwarfs to the earth.

The research was published in The Astrophysical Journal.

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