Correlations among the properties of galaxies found in a blind H i survey, which also have SDSS optical data. Garcia-Appadoo, D., A., West, A., A., Dalcanton, J., J., Cortese, L., & Disney, M., J. Monthly Notices of the Royal Astronomical Society, 394(1):340-356, 3, 2009.
Correlations among the properties of galaxies found in a blind H i survey, which also have SDSS optical data [pdf]Paper  Correlations among the properties of galaxies found in a blind H i survey, which also have SDSS optical data [link]Website  abstract   bibtex   
We have used the Parkes Multibeam system and the Sloan Digital Sky Survey (SDSS) to assemble a sample of 195 galaxies selected originally from their HI signature to avoid biases against unevolved or low surface brightness objects. For each source 9 intrinsic properties are measured homogeneously, as well as inclination and an optical spectrum. The sample, which should be almost entirely free of either misidentification or confusion, includes a wide diversity of galaxies ranging from inchoate, low surface brightness dwarfs to giant spirals. Despite this diversity there are 5 clear correlations among their properties. They include a common dynamical mass-to-light ratio within their optical radii, a correlation between surface-brightness and Luminosity and a common HI surface-density. Such correlation should provide strong constrains on models of galaxy formation and evolution.

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