Luminous Blue Compact Galaxies as Templates for Galaxy Evolution

Physics

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Scientific paper

Luminous blue compact galaxies (LBCs) are a class of objects in the local universe exhibiting an intense episode of massive star formation. Their overall luminosity indicates these systems are not dwarf galaxies, while their unusually blue optical colors, 0.4 < (B-V) < 0.6, distinguishes them from the ultra-luminous infrared sources, also believed to be extreme starburst systems. The nature of these objects, and the starburst triggering mechanisms are poorly known. LBCs are of interest because they may be the best local analogues to galaxies forming at high redshift, and can serve as templates for exploring the evolution of galaxies over cosmic time. Multiwavelength observations can be obtained at high spatial and spectral resolution, permitting the processes of galaxy assembly to be examined in great detail. We have begun a study of a well-defined sample of LBCs, and will report on their optical morphologies, thermal infrared properties, and our plans for further observations.

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