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The New Standard Stellar Population Models (NSSPM) -- The Prologue

Hyun-chul Lee·Guy Worthey·Scott C. Trager·Aaron Dotter·Brian Chaboyer·Jason W. Ferguson·Darko Jevremovic·Eddie Baron·Paula Coelho·Michael M. Briley
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Abstract

We are developing a brand new stellar population models with flexible chemistry (isochrones plus stellar colors and spectra) in order to set a new standard of completeness and excellence. Here we present preliminary results to assess the effects of stellar evolution models and stellar model atmosphere to the well-known Lick indices at constant heavy element mass fraction Z that self-consistently account for varying heavy element mixtures. We have enhanced chemical elements one by one. Our ultimate goal is to demonstrate 10% absolute mean ages for a sample of local galaxies derived from an integrated light spectrum.

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Hyun-chul Lee, Guy Worthey, Scott C. Trager, Aaron Dotter, Brian Chaboyer, Jason W. Ferguson, Darko Jevremovic, Eddie Baron, Paula Coelho, Michael M. Briley. 2007-01-23. The New Standard Stellar Population Models (NSSPM) -- The Prologue. https://arxiv.org/abs/astro-ph/0701666

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