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| Paper: |
Effects of an Accretion Disk Wind on the Profile of AGN Emission Lines |
| Volume: |
460, AGN Winds in Charleston |
| Page: |
214 |
| Authors: |
Eracleous, M.; Flohic, H. M. L. G.; Bogdanović, T. |
| Abstract: |
We explore the connection between the single- and double-peaked
broad emission lines of active galaxies using models that deal with
the effects of radiative transfer through a disk wind. We build upon
the analytic model of Murray & Chiang (1997) by including
relativistic effects. By exploring a wide parameter space, we find
that the profiles of the broad Balmer lines are affected
significantly by the optical depth over the line-emitting region of
the disk. As the optical depth through the skin of the disk
increases, the two peaks of a double-peaked profile move closer
together and eventually merge, producing a single-peaked
profile. Using a parameter range that encompasses the expected
characteristics of the broad line region, we construct a database of
model profiles and measure from them a set of diagnostic properties
(width, shift, asymmetry, and kurtosis). Comparing the model
predictions with measurements of the Hβ profiles of a subset
of SDSS quasars, we find that a large optical depth (τ > 10) is
implied along with relatively small disk inclinations (i < 45°). |
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