outflows of enriched winds [@carigi95; @maclow99; @mcquinn15b] rather than pristine gas infall [@matteucci83]. There have also been efforts to find galaxies which may have experienced a BCD-like star formation event at some point in their history, or to predict the future evolutionary state of today’s BCDs [@sanchezalmeida08; @sanchezalmeida09; @amorin12; @lelli12; @koleva13; @meyer14].

One of the big questions about BCDs is the reason for their intense star formation, and whether they have been triggered in some way. There are well-studied examples where mergers or interactions between dIs have externally triggered intense star formation [e.g., II Zw 40, @sargentsearle70; @baldwin82; @terlevich91; @vanzee98; @bordalo09]. Recently, cosmologically-relevant hydrodynamical simulations are beginning to approach these questions from a theoretical perspective [e.g., @valcke08 and references therein]. While dwarf-dwarf galaxy mergers become increasingly rare at lower masses [@deason14], some groups have had success in producing BCD-like galaxies through these interactions [@bekki08]. Others have considered the effects of in-spiraling star-forming clumps in dwarf galaxies [@elmegreen12], or the interaction between a dwarf galaxy and an infalling cloud of gas [@verbeke14], both of which can reproduce some of the observed properties of BCDs. Both the merger and gas infall scenarios frequently result in substantial structural changes to the simulated galaxies, 