Statistics
Scientific paper
Jul 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008hst..prop11696m&link_type=abstract
HST Proposal ID #11696. Cycle 17
Statistics
Scientific paper
We propose to use the unique power of WFC3 slitless spectroscopy to measure the evolution of cosmic star formation from the end of the reionization epoch at z>6 to the close of the galaxy-building era at z 0.3.Pure parallel observations with the grisms have proven to be efficient for identifying line emission from galaxies across a broad range of redshifts. The G102 grism on WFC3 was designed to extend this capability to search for Ly-alpha emission from the first galaxies. Using up to 250 orbits of pure parallel WFC3 spectroscopy, we will observe about 40 deep {4-5 orbit} fields with the combination of G102 and G141, and about 20 shallow {2-3 orbit} fields with G141 alone. Our primary science goals at the highest redshifts are: {1} Detect Lya in 100 galaxies with z>5.6 and measure the evolution of the Lya luminosity function, independent of of cosmic variance; 2} Determine the connection between emission-line selected and continuum-break selected galaxies at these high redshifts, and 3} Search for the proposed signature of neutral hydrogen absorption at re-ionization. At intermediate redshifts we will {4} Detect more than 1000 galaxies in Halpha at 0.5
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