Population Gradients in Dwarf Galaxies of the Local Group (Sebastian Hidalgo, Instituto de Astrofísica de Canarias)
I present the star formation history (SFH) as a function of the galactocentric radius for a sample of dwarf galaxies of the Local Group observed using the ACS on board the HST. The SFHs have been derived from the deepest color-magnitude diagrams obtained to date for these galaxies. I will discuss the main properties of the structure of dwarf galaxies with the aim to discern how they were formed. For such purpose, age and metallicity gradients, cumulative mass as a function of radius, and scale lengths of the star density profile as a function of time have been obtained. The results show that these parameters decrease smoothly with radius and/or time. We can use the derived gradients to characterize the morphological type of these galaxies.
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| Cuándo |
20/09/2011 de 01:00 pm a 02:00 pm |
| Dónde | DAA-PUC |
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