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Multiwavelength studies of the Seyfert 1 galaxy NGC 7469 II. X-ray and UV observations with XMM-Newton

Blustin, A. J. and Branduardi-Raymont, G. and Behar, E. and Kaastra, J. S. and Kriss, G. A. and Page, M. J. and Kahn, S. M. and Sako, M. and Steenbrugge, K. C. (2003) Multiwavelength studies of the Seyfert 1 galaxy NGC 7469 II. X-ray and UV observations with XMM-Newton. Astronomy & Astrophysics, 403 (2). pp. 481-492. ISSN 0004-6361. doi:10.1051/0004-6361:20030236.

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We present an XMM-Newton observation of NGC 7469, including studies of the X-ray and UV variability, 0.2-10 keV spectral continuum, Fe Kα emission line and the first-ever high-resolution X-ray spectrum of the soft X-ray warm absorber. We compare the properties of this X-ray warm absorber with the UV warm absorber as seen in a FUSE observation one year previously. The 0.2-10 keV spectral continuum is best fitted by a power-law plus two blackbody model. An Fe Kα emission line is visible which consists of a single narrow component and is well-modelled by a simple Gaussian. Narrow absorption and emission lines in the soft X-ray RGS spectrum demonstrate the existence of a multi-phase warm absorber with a range in log ξ of ~2 to ~-2 where ξ is in erg cm s^(-1). The warm absorber is blueshifted by several hundred km s^(-1). The highest-ionisation phase of the absorber is the best constrained and has an overall equivalent Hydrogen column of order 10^(20) cm^(-2); we find that its ionisation parameter is consistent with that of the warm emitter which generates the narrow emission lines. We identify this high ionisation absorber with the low-velocity phase of the UV absorber observed by FUSE.

Item Type:Article
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URLURL TypeDescription Paper
Kaastra, J. S.0000-0001-5540-2822
Page, M. J.0000-0002-6689-6271
Additional Information:© 2003 ESO. Article published by EDP Sciences. Received 23 December 2002; Accepted 13 February 2003; Published online 06 May 2003. This work is based on observations obtained with XMM-Newton, an ESA science mission with instruments and contributions directly funded by ESA Member States and the USA (NASA). The MSSL authors acknowledge the support of PPARC. EB was supported by the Yigal-Alon Fellowship and by the GIF Foundation under grant #2028-1093.7/2001. SRON is supported financially by NWO, the Netherlands Organization for Scientific Research.
Funding AgencyGrant Number
Particle Physics and Astronomy Research Council (PPARC)UNSPECIFIED
Yigal-Alon FellowshipUNSPECIFIED
German-Israeli Foundation for Research and Development2028-1093.7/2001
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
Subject Keywords:galaxies: active – galaxies: Seyfert – galaxies: individual: NGC 7469 – X-rays: galaxies – ultraviolet: galaxies – techniques: spectroscopic
Issue or Number:2
Record Number:CaltechAUTHORS:20180309-083801898
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Official Citation:Multiwavelength studies of the Seyfert 1 galaxy NGC 7469 II. X-ray and UV observations with XMM-Newton. A. J. Blustin, G. Branduardi-Raymont, E. Behar, J. S. Kaastra, G. A. Kriss, M. J. Page, S. M. Kahn, M. Sako and K. C. Steenbrugge. A&A, 403 2 (2003) 481-492. DOI:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:85220
Deposited By: Tony Diaz
Deposited On:09 Mar 2018 17:34
Last Modified:15 Nov 2021 20:26

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