Computer Science
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sptz.prop30526h&link_type=abstract
Spitzer Proposal ID #30526
Computer Science
Scientific paper
We propose to observe a sample of six spectroscopically confirmed Lyman alpha emitting galaxies at a redshift of 6.6. These objects, which were found using wide field narrow band imaging, lie in a small filament in the outer regions of the SSA22 field. Because of their spatial grouping they can be efficiently observed with IRAC to obtain their rest frame optical spectral energy distributions and to measure the strength of the H alpha line which lies in the 4.5 micron channel. We will combine this with measurements of the rest frame UV from Nicmos/HST observations to estimate star formation rates and limits on the dust extinction from these objects and to determine if there is evidence of earlier star fomation in these galaxies. We will use the measured star formation rates for the individual galaxies and the measured number densities from the wide field surveys to estimate the cosmic star formation densities contributed by the Lyman alpha emiiting galaxies at these redshifts and compare this with results derived from color break galaxy searches.
Cowie Lennox
Hu Esther
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