Oldest star
The oldest stars are those stars whose age approaches the age of the universe, about 13.8 billion years. These are recognized as among the oldest:
- Cayrel's Star 12.5 billion years
- HE 1327-2326
- SDSS J102915+172927
- HE0107-5240 13 billion years
- HD 122563
- Sneden's Star 13 billion years
- HE 1523-0901 13.2 billion years
- BD +17° 3248 13.8 billion years
- SMSS J031300.36-670839.3 13.6 billion years[1]
- HD 140283 13.8 billion years
- 23 stars identified as "from the cosmic dawn in the bulge of the Milky Way"[2]
References
- ↑ Miho N. Ishigaki, Nozomu Tominaga, Chiaki Kobayashi, Ken'ichi Nomoto (2014). "FAINT POPULATION III SUPERNOVAE AS THE ORIGIN OF THE MOST IRON-POOR STARS". The Astrophysical Journal Letters 792 (2): L32. arXiv:1404.4817. Bibcode:2014ApJ...792L..32I. doi:10.1088/2041-8205/792/2/L32.
- ↑ L. M. Howes,A. R. Casey, M. Asplund, S. C. Keller, D. Yong,D. M. Nataf,R. Poleski,K. Lind,C. Kobayashi,C. I. Owen,M. Ness,M. S. Bessell,G. S. Da Costa,B. P. Schmidt,P. Tisserand,A. Udalski,M. K. Szymański,I. Soszyński,G. Pietrzyński,K. Ulaczyk,Ł. Wyrzykowski,P. Pietrukowicz,J. Skowron,S. Kozłowski, P. Mróz (26 November 2015). "Extremely metal-poor stars from the cosmic dawn in the bulge of the Milky Way". Nature 527 (7579): 484–487. arXiv:1511.03930. Bibcode:2015Natur.527..484H. doi:10.1038/nature15747.
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