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      The Broad Emission Line Regions of Quasars - current status and future prospects

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          Abstract

          The spectrum emitted by the Broad Emission Line Regions of Active Galactic Nuclei can measure the luminosity of the central object and the chemical composition of the interstellar medium in a very young galaxy, and so constrain the expansion of the universe and the first stages of the evolution of massive galaxies. Here I review some recent developments in our understanding of the nature of the clouds and the interpretation of their spectra.

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          23 March 2004
          astro-ph/0403562
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          Invited review at conference "AGN Physics with the Sloan Digital Sky Survey"
          astro-ph

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