alpha-Enhancement in Thin and Thick Disc Stars: An Atlas of Synthetic Spectra

Details alpha-Enhancement in Thin and Thick Disc Stars: An Atlas of Synthetic Spectra alpha-Enhancement in Thin and Thick Disc Stars: An Atlas of Synthetic Spectra

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp.576..595m&link_type=abstract

"Proceedings of the Gaia Symposium "The Three-Dimensional Universe with Gaia" (ESA SP-576). Held at the Observatoire de Paris-Me

Computer Science

5

Stars Atmospheres, Synthetic Spectra, Abundances, Α-Enhancement

Scientific paper

We present a new collection of synthetic spectra finalized at the derivation of information about the enhancement of α-process elements in the atmospheres of F-GK stars. The spectra are computed at high resolution from fully consistent models and Opacity Distribution Functions (ODFs) for [α/Fe]= +0.0 and +0.4. Comparisons with observed spectra at R ≈ 2000 from the STELIB library are illustrated. Synthetic photometry in the Gaia photometric system, once the filter characteristics will be definitively assessed, could be computed and analyzed for disentangling α-enhanced stars from solar scaled chemical abundance ones.

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