Adaptive Optics Imaging Survey of Lyman Break Galaxies at z 3

Details Adaptive Optics Imaging Survey of Lyman Break Galaxies at z 3 Adaptive Optics Imaging Survey of Lyman Break Galaxies at z 3

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.0812a&link_type=abstract

American Astronomical Society Meeting 210, #08.12; Bulletin of the American Astronomical Society, Vol. 39, p.105

Physics

Optics

Scientific paper

To reveal the stellar mass distributions of z 3 galaxies, we are conducting K-band imaging observations of U-dropout Lyman Break Galaxies (LBGs) with Adaptive Optics (AO) systems. The results of the intensive observations with Subaru/AO36NGS/IRCS indicate that 1) the z 3 Mv* LBGs and serendipitously observed Distant Red Galaxies (DRGs) have flat profiles similar to disk galaxies in the local universe, and 2) the surface stellar mass densities of the Mv* LBGs are 3 times larger than those of disk galaxies at z=0-1. Because in the local universe, such high density disks are rare, the z 3 LBGs need to evolve dynamically between z=3 to z=0. Considering the lack of n>2 systems among the luminous LBGs and DRGs, and their strong spatial clustering, we infer that the dense n<2 disks evolve into the n>2 spheroids of nearby galaxies through violent relaxations due to merger events.

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