Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2009-06-03
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
38 pages, 18 figures; in press in the Astronomical Journal
Scientific paper
IAC-pop is a code designed to solve the star formation history (SFH) of a complex stellar population system, like a galaxy, from the analysis of the color-magnitude diagram (CMD). It uses a genetic algorithm to minimize a chi2 merit function comparing the star distributions in the observed CMD and the CMD of a synthetic stellar population. A parametrization of the CMDs is used, which is the main input of the code. In fact, the code can be applied to any problem in which a similar parametrization of an experimental set of data and models can be made. The method internal consistency and robustness against several error sources, including observational effects, data sampling and stellar evolution library differences, are tested. It is found that the best stability of the solution and the best way to estimate errors is obtained by several runs of IAC-pop with varying the input data parametrization. The routine MinnIAC is used to control this process. IAC-pop is offered for free use and can be downloaded from the site http://iac-star.iac.es/iac-pop. The routine MInnIAC is also offered under request, but support can not be provided for its use. The only requirement for the use of IAC-pop and MinnIAC is referencing this paper and crediting as indicated in the site.
Aparicio Antonio
Hidalgo Sebastian L.
No associations
LandOfFree
IAC-pop: Finding the Star Formation History of Resolved Galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with IAC-pop: Finding the Star Formation History of Resolved Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and IAC-pop: Finding the Star Formation History of Resolved Galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-194071