Complex emission line region of Mrk 817

Details Complex emission line region of Mrk 817 Complex emission line region of Mrk 817

2006-07-12

arxiv.org/abs/astro-ph/0607253v1

Astronomy and Astrophysics

Astrophysics

7 pages, 9 figures, accepted for publication in MNRAS

Scientific paper

10.1111/j.1365-2966.2006.10744.x

In this work we study the physical and kinematical properties of the emission line region of Seyfert 1.5 galaxy Mrk 817 using three sets of observations, among which are high-resolution spectra obtained with the Isaac Newton Telescope on Canary Islands. We find that in Mrk 817 the Narrow (NEL) and Broad Emission Lines (BEL) are very complex, indicating that structure of both the Narrow (NLR) and Broad Line Region (BLR) is complex and consists of at least two sub-regions with different kinematical properties. We find that the BEL can be fitted with the two-component model, where the core of the line is coming from a spherical region with isotropic velocity distribution, and wings might be affected by a low inclined accretion disc (or disc-like emitting region). Also, we discuss the physical properties of the BLR. Moreover, we find that an outflow is present in the NLR, that may be driven by an approaching jet.

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