Friday, February 10, 2012

1202.1887 (Mohammad Akhlaghi et al.)

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

Mohammad Akhlaghi, Takashi Ichikawa, Masaru Kajisawa
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.
View original: http://arxiv.org/abs/1202.1887

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