EDP Sciences
Free access
Issue
A&A
Volume 381, Number 2, January II 2002
Page(s) 481 - 486
Section Stellar clusters and associations
DOI http://dx.doi.org/10.1051/0004-6361:20011501


A&A 381, 481-486 (2002)
DOI: 10.1051/0004-6361:20011501

First XMM-Newton observations of the globular cluster M 22

N. A. Webb, B. Gendre and D. Barret

Centre d'Étude Spatiale des Rayonnements, 9 avenue du Colonel Roche, 31028 Toulouse Cedex 04, France

(Received 6 June 2001 / Accepted 25 October 2001)

Abstract
We have examined preliminary data of the globular cluster, M 22, from the EPIC MOS detectors on board XMM-Newton . We have detected 27 X-ray sources within the centre of the field of view, 24 of which are new detections. Three sources were found within the core of the cluster. From spectral analysis of the X-ray sources, it is possible that the object at the centre of the core is a quiescent X-ray transient and those lying further out are maybe cataclysmic variables.


Key words: stars: luminosity function, mass function -- galaxy: globular clusters: individual: M 22 -- X-rays: general  -- stars: binaries: general

Offprint request: N. A. Webb, Natalie.Webb@cesr.fr

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© ESO 2002