Upper Limits on the X-ray Emission of "Uranium" Stars

Details Upper Limits on the X-ray Emission of "Uranium" Stars Upper Limits on the X-ray Emission of "Uranium" Stars

2003-01-15

arxiv.org/abs/astro-ph/0301292v1

Astronomy and Astrophysics

Astrophysics

accepted AJ, scheduled March

Scientific paper

10.1086/367597

A paper by Qian & Wasserburg suggests the optical absorption lines of uranium observed in the spectra of ultra-metal-poor stars (defined as [Fe/H] $<$-3) arise from contamination from a supernova in a binary star system. Assuming the binary survived the explosion, a collapsed compact object may be present and implying potential accretion processes with accompanying X-ray emission. Upper limits on X-ray emission from an accreting compact object are described here.

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