Editing Brown dwarf (section)

=== Habitability ===

Habitability for hypothetical planets [[orbit]]ing brown dwarfs has been studied. Computer models suggesting conditions for these bodies to have [[habitable planet]]s are very stringent, the [[habitable zone]] being narrow, close (T dwarf 0.005&nbsp;au) and decreasing with time, due to the cooling of the brown dwarf (they fuse for at most 10 million years).    The orbits there would have to be of extremely low [[Eccentricity (mathematics)|eccentricity]] (on the order of {{val|e=−6}}) to avoid strong [[tidal force]]s that would trigger a [[runaway greenhouse effect]] on the planets, rendering them uninhabitable. There would also be no moons.<ref>
{{cite journal |bibcode=2013AsBio..13..279B |arxiv=1211.6467 |doi=10.1089/ast.2012.0867 |title=Habitable Planets Around White and Brown Dwarfs: The Perils of a Cooling Primary |date=2011 |last1=Barnes |first1=Rory |last2=Heller |first2=René |journal=Astrobiology |volume=13 |issue=3 |pages=279–291 |pmid=23537137 |pmc=3612282}}</ref>