NUCLEOSYNTHESIS IN A PRIMORDIAL SUPERNOVA: CARBON AND OXYGEN ABUNDANCES IN SMSS J031300.36–670839.3

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 [Angstrom] showing strong OH A-X b...

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Bibliographic Details
Published in:Astrophysical journal. Letters 2015-06, Vol.806 (1), p.1-6
Main Authors: Bessell, Michael S, Collet, Remo, Keller, Stefan C, Frebel, Anna, Heger, Alexander, Casey, Andrew R, Masseron, Thomas, Asplund, Martin, Jacobson, Heather R, Lind, Karin
Format: Article
Language:English
Subjects:
Abundance
Band spectra
Carbon
Halos
Massive stars
Sciences of the Universe
Stars
stars: Population III
supernovae: general
supernovae: individual (SMSS J031300.36)
Supernovas
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Summary: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 [Angstrom] 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] sub((3D),NLTE)
ISSN:2041-8213
2041-8205
2041-8213
DOI:10.1088/2041-8205/806/1/L16