Volume 382, Number 2, FebruaryI 2002
|Page(s)||522 - 536|
|Section||Cosmology (including clusters of galaxies)|
|Published online||15 February 2002|
The XMM-Newton serendipitous survey *
II. First results from the AXIS high galactic latitude medium sensitivity survey
Instituto de Física de Cantabria (CSIC-UC), 39005 Santander, Spain
2 Department of Physics and Astronomy, University of Leicester, LE1 7RH, UK
3 Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, UK
4 Max-Planck Institut für Extraterrestrische Physik, Postfach 1312, 85741 Garching, Germany
5 Mullard Space Science Laboratory, UCL, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK
6 Centre d'Étude Spatiale des Rayonnements, 9 avenue du Colonel Roche, 31028 Toulouse Cedex 04, France
7 Astrophysikalishes Institut Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
8 Osservatorio Astronomico di Brera, via Brera 28, 20121 Milano, Italy
9 Observatoire Astronomique de Strasbourg, 11 rue de l'Université, 67000 Strasbourg, France
10 Instituto de Astrofísica de Canarias, 38200 La Laguna, Tenerife, Spain
11 Dipartimento di Astronomia e Scienza dello Spazio, Università di Firenze, Largo E. Fermi 5, 50125 Firenze, Italy
12 Department of Physics, University of Bristol, Royal Fort, Tyndall Avenue, Bristol, BS8 1TL, UK
Corresponding author: X. Barcons, email@example.com
Accepted: 7 November 2001
We present the first results on the identifications of a medium sensitivity survey (X-ray flux limit in the 0.5–4.5 keV band) at high galactic latitude () 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 (source density sources ), 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 ( and ), which constitute ~10% 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.
Key words: X-rays: general, galaxies, stars / galaxies: active
© ESO, 2002
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