Nucleosynthesis in a primordial supernova: carbon and oxygen abundances in SMSS J031300.36-670839.3

Michael Stanley Bessell, Remo Collet, Stefan Claude Keller, Anna Frebel, Alexander Heger, Andrew Casey, Thomas Masseron, Martin Asplund, Heather Jacobson, Karin Lind, Anna F Marino, John Edward Norris, David Yong, Gary Da Costa, Conrad Chan, Zazralt Magic, Brian Paul Schmidt, Patrick Tisserand

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Abstract

SMSS J031300.36-670839.3 (hereafter SM0313-6708) is a sub-giant halo star, with no detectable Fe lines and large overabundances of C and Mg relative to Ca. We obtained Very Large Telescope-Ultraviolet and Visual Echelle Spectrograph (UVES) spectra extending to 3060 ? showing strong OH A-X band lines enabling an oxygen abundance to be derived. The OH A-X band lines in SM0313-6708 are much stronger than the CH C-X band lines. Spectrum synthesis fits indicate an [O/C] ratio of 0.02 ? 0.175. Our high signal-to-noise ratio UVES data also enabled us to lower the Fe abundance limit to [Fe/H](3D),NTLE
Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalThe Astrophysical Journal Letters
Volume806
Issue number1
DOIs
Publication statusPublished - 2015

Keywords

  • stars: Population III
  • supernovae: general
  • supernovae: individual (SMSS J031300.36)

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