Assigned ID: 653 ----- Attempting Submission 1 (Fri Feb 26 21:43:26 GMT 2010) ----- HST Phase I Proposal 653 (Highz.apt.2010_02_26_21_09.aptbackup) successfully submitted. ----- Attempting Submission 2 (Fri Feb 26 21:51:13 GMT 2010) ----- HST Phase I Proposal 653 (Highz.apt.2010_02_26_21_09.aptbackup) successfully submitted. ----- Attempting Submission 3 (Fri Feb 26 21:52:15 GMT 2010) ----- Over the past decade, large samples of Ly-break galaxies (LBGs) have been assembled at z=3-6. The observers are now pushing the forefront of galaxy formation study into the range of z=7-9 utilizing the new data from the WFC3 camera. However, due to the faintness of the sources at these redshifts, it is difficult to derive the physical parameters such as stellar mass and star formation histories of the candidate galaxies. Therefore, it would be helpful to obtain predictions on these quantities from theoretical models using self-consistent, cosmological hydrodynamic simulations of galaxy formation. In the proposed work, we will examine the physical properties of high-redshift star-forming galaxies at z=7-10 using cosmological hydrodynamic simulations. In the first step, we will develop a model for estimating the variable extinction values of individual galaxies based on their metal column densities. We will also examine the spectro-photometric properties, stellar masses, star formation histories, and spatial correlations, and provide feedback to the WFC3 observations. The second step of our project is to perform the radiative transfer calculations of stellar radiation from high-z galaxies using the Authentic Radiative Transfer (ART) code. This exact RT calculation will allow us to check the accuracy of our earlier results from part (1), and to develop a better model of dust distribution in cosmological simulations.

COSMOLOGY 12 45000 false 0.0 0.0 false false false true false false SUPPORTED