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We present new stellar population models of Lick absorption-line indices with variable element abundance ratios. The models are based on our new calibrations of absorption-line indices with stellar parameters derived from the MILES stellar library. The key novelty compared to our previous models is that they are now available at the higher spectral resolution of MILES 2. This is essential for the interpretation of galaxy spectra where calibration stars are not available, such as large galaxy redshift surveys or other high-redshift observations.
Transform Line-Strength indices from Lick/IDS to LIS
The Lick system of spectral line indices is one of the most commonly used methods of determining ages and metallicities of unresolved integrated light stellar populations. In Vazdekis et al. Note that this new system should not be restricted to the Lick set of indices in a flux calibrated system. In fact, LIS can be used for any index in the literature e.