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

L. Sidoli·A. N. Parmar·T. Oosterbroek
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Abstract

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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L. Sidoli, A. N. Parmar, T. Oosterbroek. 2004-04-02. XMM-Newton results on the ultracompact Low Mass X-ray Binary 4U~1850-087 in the Globular Cluster NGC6712. https://arxiv.org/abs/astro-ph/0404039

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