Brown Dwarfs Clouds of collapsing gas and dust that did not contain enough mass to initiate core nuclear fusion. Such objects are then frozen somewhere along their pre- main sequence contraction phase, continuously cooling into compact dark objects. Because of their small size and low temperature, they are extremely difficult to detect observationally. chandra.harvard.edu/xray_sources/browndwarf_fg.html
Posted on: Fri, 27 Sep 2013 19:00:19 +0000