I will present the clustering properties and multiwavelength spectral energy distributions of a complete sample of 162 Lyman Alpha Emitting (LAE) galaxies at z=3.1 discovered in deep narrow-band imaging of the MUSYC-ECDFS field.  The LAEs exhibit a moderate bias factor (b=1.7), implying median dark matter halo masses of 1011 M_sun.  The evolution of galaxy bias with redshift implies that z=3.1 LAEs evolve into typical present-day galaxies with L~=L*, whereas other z>3 galaxy populations, including Lyman Break Galaxies and Active Galactic Nuclei, typically evolve into more massive galaxies.  Only 30% of LAEs have sufficient stellar mass (>3x109 M_sun) to yield detections in deep Spitzer-IRAC imaging.  A two-population SED fit to the stacked UBVRIzJK+[3.6,4.5,5.6,8.0]micron fluxes of the IRAC-undetected objects finds that the typical LAE has low stellar mass (109 M_sun), moderate star formation rate (2 M_sun/yr), a young component age of 20 Myr, and little dust (A_V<0.2).

References: Gawiser et al. 2007 (ApJ 671, 278), Gronwall et al. 2007 (ApJ 667, 79), Francke et al. 2008 (ApJL 673, 13)

Eric Gawiser (Rutgers University)