Constraining the Determination of the Star Formation History of Galaxies

Details Constraining the Determination of the Star Formation History of Galaxies Constraining the Determination of the Star Formation History of Galaxies

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009rmxac..35..162m&link_type=abstract

XII Latin American IAU Regional Meeting (Eds. G. Magris, G. Bruzual, & L. Carigi) Revista Mexicana de Astronomía y Astrofísica (

Astronomy and Astrophysics

Astronomy

Galaxies: Evolution, Stars: Formation

Scientific paper

We explore the ability of two different algorithms, GASPEX and DinBas2D, to derive the Star Formation History from a galaxy spectrum. The former is a non-parametric method which derives the galaxy mass fraction formed in a pre-selected set of epochs. The second is a new approach that finds the best combination of age and mass fraction of two simple stellar populations that fits the target spectrum. In order to constrain the advantages and limitations of this novel method, we apply it to simulated galaxy spectra that cover the Hubble sequence.

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