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Revista mexicana de astronomía y astrofísica

versão impressa ISSN 0185-1101

Resumo

RAMIREZ, J. M.. Kinematics From Spectral Lines for AGN Outflows Based On Time-Independent Radiation-Driven Wind Theory. Rev. mex. astron. astrofis [online]. 2011, vol.47, n.2, pp.385-399. ISSN 0185-1101.

We build a bulk velocity-dependent photoionization model of the warm absorber of the Seyfert 1 galaxy NGC 3783. By adopting functional forms for the velocity of the flow and its particle density with radius, appropriate for radiation-driven winds, we compute the ionization, the temperature, the line Doppler shift, and the line optical depths as a function of distance. The model reproduces the observed relationship between the gas ionization and the velocity shift of the absorption line centroids in the X-ray spectrum of NGC 3783. The distribution of asymmetry seen in this spectrum requires the presence of two outflows: a higher ionization component responsible for the blue wings of the high ionization lines and the red wings of the low ionization oxygen lines, and a lower ionization flow that produces the blue wings of the oxygen lines.

Palavras-chave : galaxies [Seyfert]; quasars [absorption lines]; quasars [individual (NGC 3783)].

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