0 Assigned ID: 1363 ----- Attempting Submission 1 (Fri Mar 01 02:28:32 GMT 2013) ----- HST Phase I Proposal 1363 (hizgalmcmc21_apt.pdf.apt) successfully submitted. ----- Attempting Submission 2 (Fri Mar 01 03:01:19 GMT 2013) ----- HST Phase I Proposal 1363 (hizgalmcmc21_apt.pdf.apt) successfully submitted. ----- Attempting Submission 3 (Fri Mar 01 20:54:30 GMT 2013) ----- Recent observations with Hubble have allowed us to directly observe galaxies forming during the "reionization epoch", z~6-10. In some sense, the HST high-z observations have outpaced theory. In order to understand the constraints that the observations place on physical processes, we need to (a) ensure that the cosmological models that are used to interpret HST data incorporate the most recent advances in our understanding of galaxy-scale physics and (b) apply the latest statistical techniques for translating theoretical predictions into the plane of the HST observations and rigorously assessing their successes and failures. The efficiency of galaxy formation in low-mass halos is sensitive to a complex network of intertwined processes, including star formation, chemical evolution, stellar-driven winds, and photo-ionization. We propose to update our semi-analytic models (SAM) with more physical recipes for star formation, improved treatment of stellar-driven outflows, and a self-consistent and spatially dependent treatment of reionization and photo-ionization. We will use high-resolution numerical hydrodynamic simulations with radiative transfer to guide our implementation of these new recipes, and test and calibrate our SAMs. We will then couple the SAM with Bayesian inference and advanced Markov Chain Monte Carlo techniques in order to determine how each of these physical processes impacts galaxy properties and quantify parameter degeneracies. We will use our improved models to create mock catalogs that will be made available to the community, and will be designed to enable direct contact with the HST Frontier Fields and future observations with JWST. COSMOLOGY Default Medium false false false false true SUPPORTED