The XMM-Newton RGS spectrum of the high luminosity Seyfert 1 galaxy Markarian 509

Free access article

Issue		A&A Volume 461, Number 1, January I 2007


Page(s)		135 - 142
Section		Extragalactic astronomy
DOI		http://dx.doi.org/10.1051/0004-6361:20065348

A&A 461, 135-142 (2007)
DOI: 10.1051/0004-6361:20065348

The XMM-Newton RGS spectrum of the high luminosity Seyfert 1 galaxy Markarian 509

R. A. N. Smith, M. J. Page, and G. Branduardi-Raymont

Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK
e-mail: rans@mssl.ucl.ac.uk

(Received 3 April 2006 / Accepted 20 September 2006)

Abstract
We present a detailed analysis of the soft X-ray spectrum of the Seyfert 1 galaxy Markarian 509 taken with the XMM-Newton Reflection Grating Spectrometer. An underlying power-law continuum and three warm absorber phases provide a good fit to the data along with a number of broad and narrow emission lines. Our three warm absorber phases each have different ionization parameters and column densities. We identify a low ionization, log $\xi=0.89$ , high outflow velocity phase producing an Fe M-shell UTA feature along with absorption from O VI and N VI. There is an intermediate phase, log $\xi=2.14$ , showing absorption from H-like carbon and nitrogen and He-like neon and oxygen. The third, high ionization, log $\xi=3.26$ , low outflow velocity phase contains absorption from O VIII, Ne X and highly ionized iron. All phases are blueshifted with respect to the systemic velocity with flow velocities ranging from -60 km s^-1 to -510 km s^-1. The observed broad emission features have an rms velocity of $8000\pm 3000$ km s^-1 for the C VI and OVII lines.

Key words: galaxies: active -- galaxies: Seyfert -- galaxies: individual: Mkn 509 -- X-rays: galaxies -- techniques: spectroscopic -- line: identification

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