Projects per year
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 language | English |
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Pages (from-to) | 1-6 |
Number of pages | 6 |
Journal | The Astrophysical Journal Letters |
Volume | 806 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2015 |
Keywords
- stars: Population III
- supernovae: general
- supernovae: individual (SMSS J031300.36)
Projects
- 1 Finished
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Cosmic explosions and the origin of the elements
Heger, A.
Australian Research Council (ARC)
27/08/12 → 25/05/18
Project: Research