Abstract
A principal component analysis of metallicity and other integral properties of 33 spiral galaxies is presented; the involved parameters are: morphological type, diameter, luminosity and metallicity. From the statistical analysis it is concluded that the sample has only two significant dimensions and additional tests, involving different parameters, show similar results. Thus it seems that only type and luminosity are independent variables, being the other integral properties of spiral galaxies correlated with them.
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Galeotti, P. A statistical analysis of metallicity in spiral galaxies. Astrophys Space Sci 75, 511–519 (1981). https://doi.org/10.1007/BF00648659
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DOI: https://doi.org/10.1007/BF00648659