0 Assigned ID: 406 ----- Attempting Submission 1 (Fri Apr 11 09:06:30 GMT 2014) ----- HST Phase I Proposal 406 (dwarf_ar_ycguo.apt) successfully submitted. ----- Attempting Submission 2 (Fri Apr 11 21:24:51 GMT 2014) ----- HST Phase I Proposal 406 (dwarf_ar_ycguo.apt) successfully submitted. ----- Attempting Submission 3 (Fri Apr 11 23:33:31 GMT 2014) ----- HST Phase I Proposal 406 (dwarf_ar_ycguo.apt) successfully submitted. ----- Attempting Submission 4 (Fri Apr 11 23:55:28 GMT 2014) ----- HST Phase I Proposal 406 (dwarf_ar_ycguo.apt) successfully submitted. ----- Attempting Submission 5 (Fri Apr 11 23:59:31 GMT 2014) ----- HST Phase I Proposal 406 (dwarf_ar_ycguo.apt) successfully submitted. ----- Attempting Submission 6 (Sat Apr 12 00:00:20 GMT 2014) ----- Distant dwarf galaxies (DGs), with stellar masses 100--1000 times less than that of our Milky Way, are lynchpins for understanding galaxy formation and feedback. Like gems, they are small, hard-to-find, but precious by being the most sensitive probes of both the macro-physics of dark matter halos and the micro-physics of the feedback and regulation of star formation. We propose to undertake a comprehensive study of dwarf galaxies at 0.5<z<1 in the CANDELS fields, by mining the archived HST broad-band photometry and grism spectroscopy, mainly from two Treasury Programs (CANDELS and 3D-HST). Our study will yield (1) reliable stellar mass function of DGs via high-quality photometric and grism redshifts and stellar masses of ~15,000 DGs, (2) gas-phase metallicities for ~1,700 DGs (over 50x current samples) from grism data, and (3) distributions of and correlations with stellar sizes, profiles, and shapes for ~15,000 DGs. We compare these measurements to predictions from the most advanced galaxy formation models to trace the stellar mass--halo mass relation, test viable feedback mechanisms, and track star formation and assembly histories of DGs. UNRESOLVED STELLAR POPULATIONS AND GALAXY STRUCTURE Default Medium false false false false false SUPPORTED