Volume 381, Number 2, JanuaryII 2002
|Page(s)||481 - 486|
|Section||Galactic structure, stellar clusters, and populations|
|Published online||15 January 2002|
First XMM-Newton observations of the globular cluster M 22
Centre d'Étude Spatiale des Rayonnements, 9 avenue du Colonel Roche, 31028 Toulouse Cedex 04, France
Corresponding author: N. A. Webb, Natalie.Webb@cesr.fr
Accepted: 25 October 2001
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
© ESO, 2002
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.