WFPC2 Imaging of a Galaxy at z = 5.34 and its Field

Details WFPC2 Imaging of a Galaxy at z = 5.34 and its Field WFPC2 Imaging of a Galaxy at z = 5.34 and its Field

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8167s&link_type=abstract

HST Proposal ID #8167

Mathematics

Logic

Hst Proposal Id #8167 Distant Galaxies

Scientific paper

We propose to obtain deep WFPC2 images of a galaxy at z=5.34 and its surrounding field. The galaxy, 0140+326 RD1, was the first spectroscopically confirmed object at z > 5 and among the few confirmed objects at z > 5 currently. Our goals are to {1} map the Ly-alpha line-emitting region, {2} study the restframe UV continuum morphology, {3} search for companion Ly-alpha-emitting sources, and {4} study the stellar population and dust extinction in this distant system in conjunction with recently obtained NICMOS F160W images. If this galaxy is a truly primeval object in the process of forming its first generation of stars, its morphological properties can provide critical information on the earliest phases of galaxy formation. Ongoing, deep, multi-wavelength, ground-based efforts make this an ideal field for HST to underlinesimultaneously provide high-resolution morphological information on several other timely issues in extragalactic astronomy: the proposed WFPC2 pointing contains several sub-mm sources detected in a deep { 40 ksec} program with SCUBA; the most distant known radio galaxy, 6C 0140+326 at z=4.41; 2 confirmed and several candidate Lyman-break galaxies at z > 4; and several unusually red galaxies. The observations proposed here cannot be accomplished from ground-based facilities, as their success depends upon the high spatial resolution and low sky background only attainable with HST.

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