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The Question

(Submitted October 18, 1998)

What are Brown Dwarfs?

The Answer

Brown dwarfs are small-size objects, believed to result from condensations of fragments of molecular clouds. A brown dwarf has a small mass, too low to ignite nuclear fusion. Such a star, would be small, not much larger than Jupiter, and warm from its contraction. It would emit copious infrared radiation, thus the name "brown dwarf".

You can check the following site on brown dwarfs: http://astro.berkeley.edu/~basri/bdwarfs/index.html

http://coolcosmos.ipac.caltech.edu/cosmic_classroom/cosmic_reference/brown_dwarfs.html

Eric Christian for for Ask an Astrophysicist

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