Stellar Populations and the Star Formation Histories of LSB Galaxies—Part I: Optical and Hα Imaging

Figure 10

Correlation between stellar mass (absolute magnitude) and H𝛼 luminosity. The black symbols are this paper LSB sample. The red symbols are the combined samples of Van Zee, Hunter and Elmegreen (there was no statisical difference between those two samples). The eight galaxies in common with Hunter and Elmegreen are shown as solid symbols (connected for their differing H𝛼 values). The LSB galaxies are about 0.5 log 𝐿(H𝛼) fainter per stellar mass than the dwarf irregular samples, and there is no indication this is due to improper H𝛼 fluxes.