"Fruits in Space: Galaxy Evolution from redshift 6.5 to 0.3 with the
HST GRAPES and PEARS Surveys"

James Rhoads (ASU)


We have obtained the deepest slitless spectroscopic samples
ever using the Hubble Space Telescope's Advanced Camera for Surveys,
in two related projects, the "Grism ACS Program for Extragalactic Science"
(GRAPES) and "Probing Evolution and Reionization Spectroscopically" (PEARS).
In combination, these two programs invested 240 orbits of HST time in
deep public spectroscopy of about 100 square arcminutes in the GOODS
north and south fields.  We are using these data to study galaxy evolution
over a wide range of cosmic history.  These include (a) identifying
spectroscopically selected Lyman break galaxies up to z=6.5;
(b) studying the stellar populations of very faint Lyman alpha galaxies;
(c) determining the stellar populations and structural parameters of early
type galaxies up to redshift 2; and (d) extending the mass-metallicity
relation at 0.3<z<0.8 to include dwarf galaxies.