NOAO >   Observing Info >   Approved Programs >   2011B-0051

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Proposal Information for 2011B-0051


PI: Sebastian Hidalgo, IAC - Instituto de astrofisica de Canarias, shidalgo@iac.es
Address: Dept. de investigacion, c/ Via Lactea s/n, La Laguna, Tenerife 38205, Spain

CoI: Antonio Aparicio, IAC
CoI: Carme Gallart, IAC
CoI: Matteo Monelli, IAC
CoI: Peter B. Stetson, Herzberg Institute of Astrophysics
CoI: Alistair R. Walker, NOAO

Title: Toward a detailed, reliable and comprehensive star formation history of the Small Magellanic Cloud

Abstract: The Small Magellanic Cloud is a crucial galaxy to understand many aspects of the formation and evolution of galaxies. We propose to collect deep photometry in sixteen fields located at galactocentric distances from R_gc=2 to 4 degrees, in order to obtain color- magnitude diagrams reaching the oldest main sequence turnoff stars with high signal-to-noise ratio. These will allow us to derive accurate life- time star formation histories through comparison with synthetic color magnitude diagrams. The main outcome of this work will be a representative characterization of the time and space variations of the star formation history across the outer disk of the SMC. The range of galactocentric distances has been selected such that the density of SMC stars is enough to populate the color-magnitude diagrams of each observed MOSAIC field with over 50,000 stars, enough for a robust star formation history determination. This is a resubmission of a successful 2010B proposal that was awarded 6 nights but was hampered by bad weather. This proposal is intended to complete the project.


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