Evolutionary stellar population synthesis with MILES - II. Scaled-solar and \alpha-enhanced models

Understand

We present models that predict spectra of old- and intermediate-aged stellar populations at 2.51\AA\ (FWHM) with varying [\alpha/Fe] abundance.

• The models are based on the MILES library and on corrections from theoretical stellar spectra.
• The models employ recent [Mg/Fe] determinations for the MILES stars and BaSTI scaled-solar and \alpha-enhanced isochrones.
• We compute models for a suite of IMF shapes and slopes, covering a wide age/metallicity range.