The Dawes Review 1: Kinematic studies of star-forming galaxies
across cosmic time.
arXiv link - ADS
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Centre for Astrophysics and Supercomputing, Swinburne
University of Technology, P.O. Box 218, Hawthorn, VIC 3122,
Australia
kglazebrook@swin.edu.au
Published in the Publications of the Astronomical Society of
Australia, vol. 30, id.e056 (2013). doi:10.1017/pasa.2013.34.
A few minor corrections have been made to the journal version.
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Abstract: The last seven years have seen an explosion in
the number of Integral Field galaxy surveys, obtaining resolved 2D
spectroscopy, especially at high-redshift. These have taken
advantage of the mature capabilities of 8-10 m class telescopes
and the development of associated technology such as AO. Surveys
have leveraged both high spectroscopic resolution enabling
internal velocity measurements and high spatial resolution from AO
techniques and sites with excellent natural seeing. For the first
time, we have been able to glimpse the kinematic state of matter
in young, assembling star-forming galaxies and learn detailed
astrophysical information about the physical processes and compare
their kinematic scaling relations with those in the local
Universe. Observers have measured disc galaxy rotation, merger
signatures, and turbulence-enhanced velocity dispersions of
gas-rich discs. Theorists have interpreted kinematic signatures of
galaxies in a variety of ways (rotation, merging, outflows, and
feedback) and attempted to discuss evolution vs. theoretical
models and relate it to the evolution in galaxy morphology. A key
point that has emerged from this activity is that substantial
fractions of high-redshift galaxies have regular kinematic
morphologies despite irregular photometric morphologies and
this is likely due to the presence of a large number of highly
gas-rich discs. There has not yet been a review of this burgeoning
topic. In this first Dawes review, I will discuss the extensive
kinematic surveys that have been done and the physical models that
have arisen for young galaxies at high-redshift.
Keywords: galaxies: evolution, galaxies: formation,
galaxies: high-redshift, galaxies: kinematics and dynamics,
galaxies: stellar content, galaxies: structure
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9/Jun/2014