2003/01/15 by Eric M. Schlegel
Physics and Astronomy · #Accretion (finance) #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Binary number #Binary star #Compact star #Emission spectrum #Spectral line #Stars #Stellar, planetary, and galactic studies #Supernova #astro-ph
paper · pdf · doi:10.1086/367597
accepted AJ, scheduled March
arxiv created 2003/01/15 · openalex publication_date 2003/03/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 implies potential accretion processes with accompanying X-ray emission. Upper limits on X-ray emission from an accreting compact object are described here.