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Abstract: Massive low surface brightness galaxies have disk central surfacebrightnesses at least one magnitude fainter than the night sky, but totalmagnitudes and masses that show they are among the largest galaxies known. Likeall low surface brightness LSB galaxies, massive LSB galaxies are often inthe midst of star formation yet their stellar light has remained diffuse,raising the question of how star formation is proceeding within these galaxies.We have undertaken a multi-wavelength study to clarify the structuralparameters and stellar and gas content of these enigmatic systems. The resultsof these studies, which include HI, CO, optical, near UV, and far UV images ofthe galaxies will provide the most in depth study done to date of how, when,and where star formation proceeds within this unique subset of the galaxypopulation.

Autor: K. O'Neil


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