The DES-Brazil Science Portal and the simulation of the MW resolved stellar population with AddStar (TRILEGAL)

Eduardo Balbinot (UFRGS; LIneA), Basilio Santiago (UFRGS; LIneA), Léo Girardi (Osservatorio Astronomico di Padova-INAF), Luiz N. da Costa (ON; LIneA), Marcio A. G. Maia (ON; LIneA), Martin Makler (CBPF; LIneA), Paulo S. Pellegrini (ON; LIneA)


In this work we present the science portal that is being developed to be used for the Dark Energy Survey (DES). It is a web-based tool that integrates several tools to access data and advanced science products, monitor the progress of the
survey and data reduction, a broad range of science algorithms in a user-friendly interface.

Here we focus on the capabilities of the Science Portal to host tools that generate and analyze simulations of the
stellar population in the Milky Way (MW). This tool (AddStar) was employed in the recent paper by Rossetto et al.
(2011AJ....141..185R) where the expected resolved stellar sample of DES was simulated. This simulation led to forecasts
on how DES will be able to explore the MW structure and composition. In this work we also discuss the possible
application to other large area surveys to make similar predictions.

AddStar is also useful to estimate the discovery efficiency of dwarf satellite galaxies around the MW. It can also
be used to simulate tidal debris from past encounters or from disrupting globular clusters. AddStar in conjunction with
other scientific tools in the Science Portal can add artificial objects such as a spheroidal galaxy with a complex SFH
or a globular cluster with an associated tidal tail. This set of tools creates a simulated sky with realistic conditions
enabling the user to make accurate predictions for any given survey.

Paper ID: P004

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