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An objective classification scheme for QSO spectra

Francis, Paul; Hewett, Paul C.; Foltz, Craig B.; Chaffee, Frederic H.


The classification of QSO rest-frame optical and UV spectra is undertaken by means of a statistical principal component analysis (PCA) emphasizing the relation between QSO properties. The PCA is applied directly to a sample of QSO UV spectra from the Large Bright QSO Survey, and relations are studied between continuum, emission-line, and broad-absorption-line properties. Quantitative classifications are derived based on a limited number of principal components, and three components account for...[Show more]

CollectionsANU Research Publications
Date published: 1992
Type: Journal article
Source: The Astrophysical Journal
DOI: 10.1086/171870
Access Rights: Open Access


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