Release 11.12 ("Hergest Ridge")
Release 11.12 ("Hergest Ridge")
| Article ID: gc441 | |
| Author | Marín-Franch, Antonio et al. |
| Title | The ACS Survey of Galactic Globular Clusters. VII. Relative Ages |
| Journal | The Astrophysical Journal, Volume 694, Issue 2, pp. 1498-1516 |
| Year of publication | 2009 (on gclusters from 2014-01-31 10:47:59 ) |
| Abstract | The ACS Survey of Galactic globular clusters is a Hubble Space Telescope Treasury program designed to provide a new large, deep, and homogeneous photometric database. Based on observations from this program, we have measured precise relative ages for a sample of 64 Galactic globular clusters by comparing the relative position of the clusters' main-sequence (MS) turnoffs, using MS fitting to cross-compare clusters within the sample. This method provides relative ages to a formal precision of 2%-7%. We demonstrate that the calculated relative ages are independent of the choice of theoretical model... |
| Also available at: | http://arxiv.org/abs/0812.4541 |
| Tags | history , age |
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