91福利

Astronomy Seminar

Speaker: Prof. Katrien Steenbrugge (Universidad Católica del Norte)

Title: Properties of the AGN wind of Mrk 509

Abstract: I will present the optical, UV and X-ray data obtained during a 3 month observational campaign of the Seyfert 1 galaxy Mrk 509, using 5 different satellites, and obtained with the goal to determine the mass, kinematic luminosity and feedback on the host galaxy of this outflow. In will focus on the 600 ks XMM-Newton RGS spectrum, which is the deepest high-resolution X-ray spectrum yet of a Seyfert 1 galaxy, and the high signal-to-noise HST-COS UV spectrum. The excellent statistics allow us to study in detail the ionization structure and relative abundances (X-rays) and kinematics (UV) of this gas. The ionization structure spans 3 orders of magnitude and is discrete and the abundance ratios are consistent with solar ratios. We detect absorption from an AGN wind which has 8 different kinematic components and is located at distances between 5 and 400 pc; the host galaxy and probably a high velocity cloud about 22 kpc from Mrk 509. Finally, we set distance limits of 40 and 1000 gravitational radii from the black hole for the origin of the Fe Kalpha emission line.

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