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Astrophysics and Space Science

, Volume 300, Issue 1–3, pp 81–86 | Cite as

The Seyfert-Liner Galaxy NGC 7213: An XMM-Newton Observation

  • R. L. C. StarlingEmail author
  • M. J. Page
  • G. Branduardi-Raymont
  • A. A. Breeveld
  • R. Soria
  • K. Wu
Article

Abstract

We examine the XMM X-ray spectrum of the low-ionisation nuclear emission-line region (LINER)-AGN NGC 7213, which is best fit with a power law, Kα emission lines from Fe i, Fe xxv and Fe xxvi and a soft X-ray collisionally ionised thermal plasma with kT = 0.18+0.03−0.01 keV. We find a luminosity of 7× 10−4 LEdd, and a lack of soft X-ray excess emission, suggesting a truncated accretion disc. NGC 7213 has intermediate X-ray spectral properties, between those of the weak AGN found in the LINER M 81 and higher luminosity Seyfert galaxies. This supports the notion of a continuous sequence of X-ray properties from the Galactic Centre through LINER galaxies to Seyferts, likely determined by the amount of material available for accretion in the central regions.

Keywords

X-rays: galaxies galaxies: active galaxies: Seyfert galaxies: individual NGC 7213 

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References

  1. Baganoff, F.K., et al.: 2003, ApJ 591, 891.CrossRefADSGoogle Scholar
  2. Baldwin, J.A., Phillips, M.M. and Terlevich, R.: 1981, PASP 93, 5.ADSGoogle Scholar
  3. Bianchi, S., Matt, G., Balestra, I. and Perola, G.C.: 2003, A&A 407, L21.CrossRefADSGoogle Scholar
  4. Bianchi, S., Matt, G., Balestra, I., Guainazzi, M. and Perola, G.C.: 2004, A&A 422, 65.CrossRefADSGoogle Scholar
  5. Blustin, A.J., et al.: 2003, A&A 403, 481bitem Coupé, S., Godet, O., Dumont, A.-M. and Collin, S.: 2004, A&A 414, 979.Google Scholar
  6. Dickey, J.M. and Lockman, F.J.: 1990, ARA&A 28, 215.ADSGoogle Scholar
  7. Ferland, G.J. and Netzer, H.: 1983, ApJ 264, 105.CrossRefADSGoogle Scholar
  8. Filippenko, A.V. and Halpern, J.P.: 1984, ApJ 285, 458.CrossRefADSGoogle Scholar
  9. Halpern, J.P. and Steiner, J.E.: 1983, ApJ 269, L37.CrossRefADSGoogle Scholar
  10. Heckman, T.M.: 1980, A&A 87, 152.ADSGoogle Scholar
  11. Ho, L.C., Filippenko, A.V. and Sargent, W.L.W.: 2003, ApJ 583, 159.CrossRefADSGoogle Scholar
  12. Kinkhabwala, A., et al.: 2002, ApJ 575, 732.CrossRefADSGoogle Scholar
  13. Marshall, F.E., et al.: 1978, BAAS 10, 433.ADSGoogle Scholar
  14. Narayan, R. and Yi, I.: 1995, ApJ 452, 710.CrossRefADSGoogle Scholar
  15. Nelson, C.H. and Whittle, M.: 1995, ApJS 99, 67.CrossRefADSGoogle Scholar
  16. Page, M.J., et al.: 2003, A&A 400, 145.CrossRefADSGoogle Scholar
  17. Page, M.J., Davis, S.W. and Salvi, N.J.: 2003, MNRAS 343, 1241.CrossRefADSGoogle Scholar
  18. Page, M.J., Soria, R., Zane, S., Wu, K. and Starling, R.L.C.: 2004, A&A 422, 77.CrossRefADSGoogle Scholar
  19. Phillips, M.M. 1979, ApJ 227, L121.CrossRefADSGoogle Scholar
  20. Porquet, D. and Dubau, J.: 2000, A&AS 143, 495.ADSGoogle Scholar
  21. Pounds, K.A., et al.: 2003, MNRAS 341, 953.CrossRefADSGoogle Scholar
  22. Sako, M., et al.: 2001, A&A 365, L168.CrossRefADSGoogle Scholar
  23. Siemiginowska, A., Czerny, B. and Kostyunin, V.: 1996, ApJ 458, 491.CrossRefADSGoogle Scholar
  24. Tanaka, Y., Koyama, K., Maeda, Y. and Sonobe, T.: 2000, PASJ 52, L25.ADSGoogle Scholar
  25. Turner, T.J. and Pounds, K.A.: 1989, MNRAS 240, 833.ADSGoogle Scholar

Copyright information

© Springer Science + Business Media, Inc. 2005

Authors and Affiliations

  • R. L. C. Starling
    • 1
    Email author
  • M. J. Page
    • 2
  • G. Branduardi-Raymont
    • 2
  • A. A. Breeveld
    • 2
  • R. Soria
    • 2
  • K. Wu
    • 2
  1. 1.Astronomical Institute “Anton Pannekoek”University of AmsterdamAmsterdamThe Netherlands
  2. 2.Mullard Space Science LaboratoryUniversity College LondonLondonU.K.

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