A SIMPLE Proof that Lyman Alpha Emitters are Galaxies in the Act of Formation

Details A SIMPLE Proof that Lyman Alpha Emitters are Galaxies in the Act of Formation A SIMPLE Proof that Lyman Alpha Emitters are Galaxies in the Act of Formation

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sptz.prop40823g&link_type=abstract

Spitzer Proposal ID #40823

Computer Science

Scientific paper

Lyman Alpha Emitting galaxies (LAEs) seen at high redshift appear to be galaxies in the act of formation. They are currently the most promising candidates for the progenitors of typical spiral galaxies like the Milky Way. The LAEs tend to be younger, lower in mass, and less chemically evolved than the better-studied Lyman Break Galaxies (LBGs). Deep IRAC imaging allows us to study the star formation history of these objects to gain a better understanding of the process of galaxy formation. We will use archival IRAC images of the Extended Chandra Deep Field-South from the SIMPLE (Spitzer IRAC/MUSYC Public Legacy in ECDF-S) and GOODS Legacy Programs combined with ground- and space-based photometry in UBVRIzJK to study the Spectral Energy Distributions of our sample of 162 Lyman Alpha Emitters at z=3.1. 47 of these LAEs have confirmed spectroscopic redshifts. We will perform the identical analysis on a sample of 34 spectroscopically confirmed Lyman Break Galaxies at 2.7

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