10283( 1) - 04/02/04 10:45 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 10283 Version: 1 Check-in Date: 02-Apr-2004 10:45:13 1.Proposal Title: Confronting HST Observations of Dwarf Spheroidals with Theory ------------------------------------------------------------------------------------ 2. Proposal For 3. Cycle 4. Parallel Pointing Tolerance AR 13 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: Prof. Nickolay Gnedin University of Colorado at Boulder ------------------------------------------------------------------------------------ 6. Abstract We will continue our work on using advanced cosmological simulations to model the formation and evolution of dwarfs spheroidal galaxies. Our previous simulations were able to fully resolve the internal structure of dwarf spheroidals formed before the reionization epoch. In this cycle we will incorporate results from our previous simulations into a large-scale N-body only code to model the formation of the Local Group and to relate the results of our gas-dynamical simulations to the present distribution of dwarf spheroidals in the Local Group. The results of our simulations will be compared to the observational data, including the color-magnitude diagrams of dwarfs spheroidals, obtained by the HST. ------------------------------------------------------------------------------------ 10283( 1) - 04/02/04 10:45 - [ 2] Summary Form for Proposal 10283 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category AR ------------------------------------------------------------------------------------------------------------------------------------