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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