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arxiv: 0711.0602 · v1 · submitted 2007-11-05 · 🌌 astro-ph

Hydrogen deficient donors in low-mass X-ray binaries

classification 🌌 astro-ph
keywords starhydrogenbinariesdeficientneutronstarsx-rayaccreting
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A number of X-ray binaries (neutron stars or black holes accreting from a companion star) have such short orbital periods that ordinary, hydrogen rich, stars do not fit in. Instead the mass-losing star must be a compact, evolved star, leading to the transfer of hydrogen deficient material to the neutron star. I discuss the current knowledge of these objects, with focus on optical spectroscopy.

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