Journal article
Extreme BAL Quasars from the Sloan Digital Sky Survey
10 Jul 2001
Abstract
The Sloan Digital Sky Survey has discovered a population of broad absorption
line quasars with various extreme properties. Many show absorption from
metastable states of FeII with varying excitations; several objects are almost
completely absorbed bluewards of MgII; at least one shows stronger absorption
from FeIII than FeII, indicating temperatures T>35000 K in the absorbing
region; and one object even seems to have broad H-beta absorption. Many of
these extreme BALs are also heavily reddened, though `normal' BALs
(particularly LoBALs) from SDSS also show evidence for internal reddening.
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Details
- Title
- Extreme BAL Quasars from the Sloan Digital Sky Survey
- Creators
- Patrick B HallJ. E GunnG. R KnappV. K NarayananM. A StraussS. F AndersonD. E. Vanden BerkT. M HeckmanJ. H KrolikZ. I TsvetanovW ZhengG. T RichardsD. P SchneiderX FanD. G YorkT. R GeballeM DavisR. H BeckerR. J Brunner
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Identifiers
- 991019201359404721