The XMM-Newton serendipitous survey - II. First results from the AXIS high galactic latitude medium sensitivity survey

X Barcons, FJ Carrera, MG Watson, RG McMahon, B Aschenbach, MJ Freyberg, K Page, MJ Page, TP Roberts, MJL Turner, D Barret, H Brunner, MT Ceballos, R Della Ceca, P Guillout, G Hasinger, T Maccacaro, S Mateos, C Motch, I NegueruelaJP Osborne, I Perez-Fournon, A Schwope, P Severgnini, GP Szokoly, NA Webb, PJ Wheatley, DM Worrall

Research output: Contribution to journalArticle (Academic Journal)peer-review

Abstract

We present the first results on the identifications of a medium sensitivity survey (X-ray flux limit 2 x 10(-14) erg cm(-2) s(-1) in the 0.5-4.5 keV band) at high galactic latitude (\b\ > 20degrees) carried out with the XMM-Newton X-ray observatory within the AXIS observing programme. This study is being conducted as part of the XMM-Newton Survey Science Centre activities towards the identification of the sources in the X-ray serendipitous sky survey. The sample contains 29 X-ray sources in a solid angle of 0.26 deg(2) (source density 113 +/- 21 sources deg(-2)), out of which 27 (93%) have been identified. The majority of the sources are broad-line AGN (19), followed by narrow emission line X-ray emitting galaxies (6, all of which turn out to be AGN), 1 nearby non-emission line galaxy (NGC 4291) and 1 active coronal star. Among the identified sources we find 2 broad-absorption line QSOs (z similar to 1.8 and z similar to 1.9), which constitute similar to10% of the AGN population at this flux level, similar to optically selected samples. Identifications of a further 10 X-ray sources fainter than our survey limit are also presented.

Original languageEnglish
Pages (from-to)522-536
Number of pages15
JournalAstronomy and Astrophysics
Volume382
Issue number2
Publication statusPublished - Feb 2002

Keywords

  • X-rays : general, galaxies, stars
  • galaxies : active
  • PHOTON IMAGING CAMERA
  • DEEP ROSAT SURVEY
  • X-RAY
  • EMISSION-LINE
  • HARD SOURCES
  • SKY SURVEY
  • GALAXIES
  • NUCLEI
  • MAGNITUDES
  • SPECTRUM

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