Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006apjs..163..110s&link_type=abstract
The Astrophysical Journal Supplement Series, Volume 163, Issue 1, pp. 110-121.
Astronomy and Astrophysics
Astronomy
13
Galaxies: Intergalactic Medium, Methods: Data Analysis, Methods: Statistical, Galaxies: Quasars: Absorption Lines, Galaxies: Quasars: Emission Lines, Techniques: Spectroscopic
Scientific paper
We investigate the variety in quasar UV spectra (λλ1020-1600), with emphasis on the weak emission lines in the Lyα forest region, using principal component analysis (PCA). We use 50 smooth continuum-fitted quasar spectra (0.14
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