Line Asymmetry in the Seyfert Galaxy NGC 3783

Details Line Asymmetry in the Seyfert Galaxy NGC 3783 Line Asymmetry in the Seyfert Galaxy NGC 3783

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005apj...627..166r&link_type=abstract

The Astrophysical Journal, Volume 627, Issue 1, pp. 166-176.

Astronomy and Astrophysics

Astronomy

3

Galaxies: Active, Galaxies: Individual: Ngc Number: Ngc 3783, Galaxies: Seyfert, X-Rays: Galaxies

Scientific paper

We have reanalyzed the 900 ks Chandra X-ray spectrum of NGC 3783, finding evidence on the asymmetry of the spectral absorption lines. The lines are fitted with a parametric expression that results from an analytical treatment of radiatively driven winds. The line asymmetry distribution derived from the spectrum is consistent with a nonspherical outflow with a finite optical depth. Within this scenario, our model explains the observed correlations between the line velocity shifts and the ionization parameter and between the line velocity shift and the line asymmetry. The present results may provide a framework for detailed testing of models for the dynamics and physical properties of warm absorbers in Seyfert galaxies.

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