Harris, GJ;
Lynas-Gray, AE;
Tennyson, J;
Miller, S;
(2006)
The role of non-gray model atmospheres in the evolution of low mass metal poor stars.
In: Lamers, HJGLM and Langer, N and Nugis, T and Annuk, K, (eds.)
Stellar Evolution at Low Metallicity: Mass Loss, Explosions, Cosmology.
(pp. 83 - 90).
ASTRONOMICAL SOC PACIFIC
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Abstract
Gray model atmospheres are generally considered a reasonable approximation to make upon stars of mass greater than about 0.6 M-circle dot. Here we show that non-gray atmospheres can significantly affect evolutionary models, with masses up to 0.9 M-circle dot. The effect of including a non-gray atmosphere is strongest in the pre-main and post-main Sequence. This may have implications for the ages of the oldest globular clusters.
| Type: | Proceedings paper |
|---|---|
| Title: | The role of non-gray model atmospheres in the evolution of low mass metal poor stars |
| Event: | Workshop on Stellar Evolution at Low Metallicity |
| Location: | Tartu, ESTONIA |
| Dates: | 2005-08-15 - 2005-08-19 |
| ISBN-13: | 978-1-583812-21-1 |
| Open access status: | An open access version is available from UCL Discovery |
| Keywords: | THERMONUCLEAR REACTION-RATES, LINE LIST, STELLAR ATMOSPHERES, MOLECULAR OPACITIES, MAIN-SEQUENCE, INTENSITIES, STATE |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Science and Technology Studies |
| URI: | https://discovery.ucl.ac.uk/id/eprint/17016 |
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