Two Lensed Ly-A Emitters at z ~ 5

Details Two Lensed Ly-A Emitters at z ~ 5 Two Lensed Ly-A Emitters at z ~ 5

Apr 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009sptz.prop60158g&link_type=abstract

Spitzer Proposal ID #60158

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Scientific paper

We propose 3.6 micron imaging of two newly discovered Ly-A emitters at zD5.0 and 5.2. These spectroscopically confirmed sources, located behind a pair of strong lensing clusters from the SDSS Giant Arcs Survey, are lensed and appear an order of magnitude brighter than the small samples of typical Ly-A emitters previously found at high redshifts in ultra-deep fields. As such they offer the opportunity for detailed individual study which these other sources do not, and can be well measured in modest (less than 1 hour) total integrations. The proposed observation provides a critical measure of the presence or absence of older stars in these objects, and hence helps constrain stellar mass, and in conjunction with ground-based near-IR imaging will yield a detailed picture of the spectral energy distribution of these sources from rest-frame UV to optical wavelengths.

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