Luminosity Structure and Objective Classification of Galaxies

Details Luminosity Structure and Objective Classification of Galaxies Luminosity Structure and Objective Classification of Galaxies

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...185.7716h&link_type=abstract

American Astronomical Society, 185th AAS Meeting, #77.16; Bulletin of the American Astronomical Society, Vol. 26, p.1440

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Scientific paper

The luminosity structure of spiral galaxies is studied using the technique of Principal Component Analysis. It is found that about 94% of the variation in the luminosity distribution of galaxies can be accounted for by just two principal components. The principal luminosity components may contain valuable information about star formation history or whatever luminosity regulating processes occur in galaxies. Practically, these principal components provide a new approach for the investigation of the luminosity structures of galaxies and their dependence on other properties. They also serve as an excellent objective classification system for galaxies.

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