1201.4386 (Sarah H. Miller et al.)

The Assembly History of Disk Galaxies: II. Probing the Emerging Tully-Fisher Relation During 1    [PDF]

Sarah H. Miller, Richard S. Ellis, Mark Sullivan, Kevin Bundy, Andrew Newman, Tommaso Treu

Through extended integrations using the recently-installed deep depletion CCD on the red arm of the Keck I Low Resolution Imaging Spectrograph, we present new measurements of the resolved spectra of 70 morphologically-selected star-forming galaxies with i_AB<24.1 in the redshift range 12. Remarkably, we find a well-defined Tully-Fisher relation with up to 60% increase in scatter and only a modest stellar mass zero-point shift, -0.06+/-0.02 dex at z~1.7, compared to that observed locally. Although our sample is incomplete in terms of either a fixed stellar mass or star formation rate limit, we discuss the implications that typical star-forming disk galaxies evolve to arrive on a well-defined Tully-Fisher relation within a surprisingly short period of cosmic history.

View original: http://arxiv.org/abs/1201.4386