Total to central luminosity ratios of quiescent galaxies in MODS as an indicator of size evolution

Details Total to central luminosity ratios of quiescent galaxies in MODS as an indicator of size evolution Total to central luminosity ratios of quiescent galaxies in MODS as an indicator of size evolution

2012-02-09

arxiv.org/abs/1202.1887v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Conference Proceedings for Galaxy Mergers in an Evolving Universe (Hualien, Taiwan); Editors: Wei-Hsin Sun, Nick Scoville

Scientific paper

Using the very deep Subaru images of the GOODS-N region, from the MOIRCS Deep Survey and images from the HST/ACS, we have measured the Luminosity Ratio (LR) of the outer to the central regions of massive (M>10^{10.5}M_{Sun}) galaxies at fixed radii in a single rest-frame for z<3.5 as a new approach to the problem of size evolution. We didn't observe any evolution in the median LR. Had a significant size growth occurred, the outer to central luminosity ratios would have demonstrated a corresponding increase with a decrease in redshift.

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