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The Age of the Universe
| Content Provider | Semantic Scholar |
|---|---|
| Copyright Year | 1998 |
| Abstract | A minimum age of the universe can be estimated directly by determining the age of the oldest objects in the our Galaxy. These objects are the metal-poor stars in the halo of the Milky Way. Recent work on nucleochronology finds that the oldest stars are 15.2 ± 3.7 Gyr old. White dwarf cooling curves have found a minimum age for the oldest stars of 8 Gyr. Currently, the best estimate for the age of the oldest stars is based upon the absolute magnitude of the main sequence turn-off in globular clusters. The oldest globular clusters are 11.5 ± 1.3 Gyr, implying a minimum age of the universe of tuniverse ≥ 9.5 Gyr (95% confidence level). |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.astro.caltech.edu/~george/ay127/readings/9808200v1.pdf |
| Alternate Webpage(s) | http://arxiv.org/pdf/astro-ph/9808200v1.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | ABRA gene Computer cooling Cool - action DWARF Physical object Stars, Celestial |
| Content Type | Text |
| Resource Type | Article |
