Paper:	The Evolution of Spiral Disks
Volume:	197, XVth IAP Meeting Dynamics of Galaxies: From the Early Universe to the Present
Page:	175
Authors:	Bershady, Matthew A.; Andersen, David R.
Abstract:	We report on aspects of an observational study to probe the mass assembly of large galaxy disks. In this contribution we focus on a new survey of integral-field Hα velocity-maps of nearby, face on disks. Preliminary results yield disk asymmetry amplitudes consistent with estimates based on the scatter in the local Tully-Fisher relation. We also show how the high quality of integral-field echelle spectroscopy enables determinations of kinematic inclinations to i ~20 °. This holds the promise that nearly-face-on galaxies can be included in the Tully-Fisher relation. Finally, we discuss the prospects for measuring dynamical asymmetries of distant galaxies.

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