Journal article
Constraints on Quasar Continuum, BELR, and BALR Physics from SDSS Composite Spectra
04 Dec 2003
Abstract
We review recent results on quasars from the SDSS as they relate to our
understanding of the UV/optical continuum, the broad emission line region, and
the broad absorption line region. The ensemble average colors of large numbers
of quasars promise to provide constraints on the optical/UV continuum emission
mechanism. High-ionization emission-line blueshifts and emission line
properties as a function of optical/UV spectral index trace the structure of
the broad emission line region. Statistical analysis of the broad absorption
line quasar population suggests that they are more ubiquitous than one might
otherwise think and are not likely to represent a completely distinct
population of quasars, but that the BAL trough properties are a function of the
underlying optical continuum and emission properties of the quasar.
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Details
- Title
- Constraints on Quasar Continuum, BELR, and BALR Physics from SDSS Composite Spectra
- Creators
- Gordon T RichardsPatrick B HallTimothy A ReichardDaniel E. Vanden BerkDonald P SchneiderMichael A Strauss
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Identifiers
- 991019201514504721