Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-12-08
Astrophys.J.694:902-923,2009
Astronomy and Astrophysics
Astrophysics
Accepted for publication in the Astrophysical Journal. Supplemental materials can be found at http://astro.wsu.edu/hclee/NSSPM
Scientific paper
10.1088/0004-637X/694/2/902
The first paper in this series explored the effects of altering the chemical mixture of the stellar population on an element by element basis on stellar evolutionary tracks and isochrones to the end of the red giant branch. This paper extends the discussion by incorporating the fully consistent synthetic stellar spectra with those isochrone models in predicting integrated colors, Lick indices, and synthetic spectra. Older populations display element ratio effects in their spectra at higher amplitude than younger populations. In addition, spectral effects in the photospheres of stars tend to dominate over effects from isochrone temperatures and lifetimes, but, further, the isochrone-based effects that are present tend to fall along the age-metallicity degeneracy vector, while the direct stellar spectral effects usually show considerable orthogonality.
Baron Eddie
Briley Michael M.
Chaboyer Brian
Coelho Paula
Dotter Aaron
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