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N. P. Vogt (New Mexico State University), A. C. Phillips (University of California, Santa Cruz), Deep Extragalactic Evolutionary Probe (DEEP) Collaboration, European Network on the Formation and Evolution of Galaxies (TMR) Collaboration
We review the status of current observations of the fundamental parameters of intermediate redshift (0.2 < z < 1.3) spiral galaxies. Advances in instrumentation of 8-10m class telescopes have made possible detailed measurements of galaxy kinematics and mass, in both the optical and the infrared passbands. By studying such well known star formation indicators as [OII]3727A (in the optical) and H-alpha (redshifted to the infrared), the internal velocity structure of galaxies can be traced through this entire redshift regime. The combination of throughput and optimum seeing conditions yields spectra which can be combined with high resolution multiband imaging to explore the evolution of galaxies of various morphologies, and to place constraints on current models of galaxy formation.
Out to redshifts of z = 1, these data form a high redshift Tully-Fisher relation that spans four magnitudes and extends to well below L*, with no obvious change in shape or slope with respect to the local relation. A comparison of disk surface brightness between local and high redshift samples yields an offset which can be entirely explained by distance-dependent surface brightness selection effects, as can the apparent change in disk size with redshift for disks of a given mass. These results provide further evidence for only a modest increase in luminosity with lookback time for the bulk of the field spiral galaxy population, and support low Omega0 models of formation.
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Bulletin of the American Astronomical Society, 34
© 2002. The American Astronomical Soceity.