Hostname: page-component-8448b6f56d-c47g7 Total loading time: 0 Render date: 2024-04-18T15:07:21.749Z Has data issue: false hasContentIssue false
  • English
  • Français

X-ray emission properties of BLAGN in the XMM-2dF Wide Angle Survey

Published online by Cambridge University Press:  01 August 2006

S. Mateos ,
M. G. Watson ,
J. A. Tedds ,
F. J. Carrera ,
M. Page  and
A. Corral
S. Mateos
Affiliation:
Department of Physics and Astronomy, University of Leicester, LE1 7RH, UK email: sm279@star.le.ac.uk
M. G. Watson
Affiliation:
Department of Physics and Astronomy, University of Leicester, LE1 7RH, UK email: sm279@star.le.ac.uk
J. A. Tedds
Affiliation:
Department of Physics and Astronomy, University of Leicester, LE1 7RH, UK email: sm279@star.le.ac.uk
F. J. Carrera
Affiliation:
Instituto de Física de Cantabria (CSIC-UC), Avenida de los Castros, 39005 Santander, Spain
M. Page
Affiliation:
Mullard Space Science Laboratory, UCL, Holmbury St. Mary, Surrey, RH5 6NT, UK
A. Corral
Affiliation:
Instituto de Física de Cantabria (CSIC-UC), Avenida de los Castros, 39005 Santander, Spain
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We present the preliminary results of the X-ray spectral analysis of one of the largest samples of X-ray selected BLAGN assembled so far from the XMM-2dF Wide Angle Survey. The sample, with 641 spectroscopically identified BLAGN, provides a unique resource to carry out a statistical analysis of the emission properties of these objects over a broad range of X-ray luminosities and redshifts. The X-ray spectra of the majority of the objects were best fitted with a power law with a near constant mean spectral photon index. No obvious trend of this spectral parameter with X-ray luminosity or redshift was found.

We measured the mean photon index of our objects to be ∼1.96 ± 0.05 with an intrinsic dispersion σ=0.22±0.03. X-ray absorption was detected in ∼8% of the sources, with no preferred luminosity or redshift and having typical values of the absorbing column density ≤1022 cm−2.

Keywords

X-rays: general – X-ray surveys – galaxies: active
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S238: Black Holes from Stars to Galaxies – Across the Range of Masses , August 2006 , pp. 59 - 64
Copyright
Copyright © International Astronomical Union 2007

References

Bechtold, J., Siemiginowska, A., Shields, J., Czerny, B. et al. 2003, ApJ, 588, 119CrossRefGoogle Scholar
Dai, X., Chartas, G., Eracleous, M. & Garmire, G. P. 2004, ApJ, 605, 45CrossRefGoogle Scholar
Dwelly, T. & Page, M. J. 2006, MNRAS, 1122Google Scholar
Grupe, D., Mathur, S., Wilkes, B. & Osmer, P. 2006, AJ, 131, 55CrossRefGoogle Scholar
Maccacaro, T., Gioia, L. M., Wolter, A. et al. 1988, ApJ, 326, 680CrossRefGoogle Scholar
Mateos, S., Barcons, X., Carrera, F. J., Ceballos, M. T. et al. 2005, A&A, 433, 855Google Scholar
Mateos, S., Barcons, X., Carrera, F. J., Ceballos, M. T. et al. 2005, A&A, 444, 79Google Scholar
Tozzi, P., Gilli, R., Mainieri, V., Norman, C. et al. 2005, A&A, 451, 457Google Scholar
Vignali, C., Brandt, W. N., Schneider, D. P. & Kaspi, S. 2005, AJ, 129, 2519CrossRefGoogle Scholar