SIMBAD references

2004A&A...424..133W - Astronomy and Astrophysics, volume 424, 133-143 (2004/9-2)

X-ray sources and their optical counterparts in the globular cluster M22.

WEBB N.A., SERRE D., GENDRE B., BARRET D., LASOTA J.-P. and RIZZI L.

Abstract (from CDS):

Using XMM-Newton EPIC imaging data, we have detected 50 low-luminosity X-ray sources in the field of view of M 22, where 5±3 of these sources are likely to be related to the cluster. Using differential optical photometry, we have identified probable counterparts to those sources belonging to the cluster. Using X-ray spectroscopic and timing studies, supported by the optical colours, we propose that the most central X-ray sources in the cluster are cataclysmic variables, millisecond pulsars, active binaries and a blue straggler. We also identify a cluster of galaxies behind this globular cluster.

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Journal keyword(s): Galaxy: globular clusters: individual: M22 - X-rays: general - stars: binaries: general - galaxies: clusters: general

Nomenclature: Table 1: [WSG2004] NN N=51 among (Nos 5-78).

Simbad objects: 58

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