Evolutionary Stellar Population Synthesis at 2 A Spectral Resolution

Abstract

In this paper we develop an evolutionary stellar population synthesis model to predict spectral energy distributions (SEDs) for single-age, single-metallicity stellar populations (SSPs) at resolution ~1.8 Å in two reduced but very important spectral regions around 4000 and 5000 Å. The input stellar database is composed of a subsample of ~500 stars selected from the original Jones spectral library This is the first time that such an evolutionary model has employed such an extensive empirical stellar spectral library, at such high resolution, for supporting its SED predictions. A spectral library corresponding to simple old stellar populations with metallicities in the range -0.7