Rest Frame Optical Spectroscopy of Galaxy Clusters at 1.6 < z < 1.9

Details Rest Frame Optical Spectroscopy of Galaxy Clusters at 1.6 < z < 1.9 Rest Frame Optical Spectroscopy of Galaxy Clusters at 1.6 < z < 1.9

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009hst..prop12203s&link_type=abstract

HST Proposal ID #12203. Cycle 18

Physics

Scientific paper

We propose to obtain WFC3 IR grism spectroscopy of IRAC-selected galaxy clusters at 1.6 < z < 1.9 in the Bootes field. The candidate clusters were identified as three dimensional overdensities, based on full photometric redshifts determined from optical-NIR-MIR photometry. These 5 cluster candidates are being imaged by WFC3+ACS in Cycle 17 to obtain rest frame optical morphologies for the galaxies, and precise color-magnitude diagrams. Obtaining firm redshifts for the red galaxy populations in the absence of emission lines is extremely difficult from the ground at these redshifts. With the WFC3 IR grism data we will be able to measure the redshifts and determine the star formation histories of the red galaxy populations through SED fitting of the rest frame optical spectra that will include continuous coverage of the Balmer and 4000 Angstrom breaks.;

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