Sizes and Morphology of z=3.1 Lyman Alpha Emitting Galaxies in the Extended CDF-S

Details Sizes and Morphology of z=3.1 Lyman Alpha Emitting Galaxies in the Extended CDF-S Sizes and Morphology of z=3.1 Lyman Alpha Emitting Galaxies in the Extended CDF-S

Jul 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007hst..prop11253g&link_type=abstract

HST Proposal ID #11253. Cycle 16

Astronomy and Astrophysics

Astronomy

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. Wide-field ACS imaging allows us to study the physical properties of these objects at kpc scales to gain a better understanding of the interconnected processes of mergers and star formation that play fundamental roles in galaxy formation. We will use archival ACS images of the Extended Chandra Deep Field-South from GEMS, GOODS, and UDF to study the size and morphology of our sample of 162 Lyman Alpha Emitters at z=3.1, 47 of which 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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