XMM-Newton results on the ultracompact Low Mass X-ray Binary 4U~1850-087 in the Globular Cluster NGC6712

Details XMM-Newton results on the ultracompact Low Mass X-ray Binary 4U~1850-087 in the Globular Cluster NGC6712 XMM-Newton results on the ultracompact Low Mass X-ray Binary 4U~1850-087 in the Globular Cluster NGC6712

2004-04-02

arxiv.org/abs/astro-ph/0404039v1

Astronomy and Astrophysics

Astrophysics

2 pages, 2 figures. To be published in the Proceedings of the 5th INTEGRAL Workshop: "The INTEGRAL Universe", February 16-20,

Scientific paper

We report on preliminary results from our XMM-Newton observation of the Low Mass X-ray Binary 4U 1850-087, located in the galactic globular cluster NGC 6712. It is an ultracompact binary system, with an orbital period of 20.6 min. In previous low-resolution X-ray observations 4U 1850-087 displayed a soft excess residual around 0.7 keV, possibly indicative of the presence of a high Ne/O ratio. We discuss here our preliminary analysis of high resolution X-ray spectra of 4U1850-087, and timing results.

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