We study the spatially resolved properties of star-forming galaxies
at redshift z 2 - 3 on scales 1 kpc using a combination of
morphological and kinematic analyses in an effort to characterize
the major mechanisms of galaxy formation in the young universe.
Using a sample of 216 galaxies which have been spectroscopically
confirmed to lie between redshifts z = 1.8 - 3.4 in the GOODS-N
field we demonstrate that rest-UV morphology (as seen by the Hubble
Space Telescope) is statistically uncorrelated with physical
properties such as star formation rate and is therefore unable to
support the hypothesis that the prevalence of irregular
morphologies indicates a high major merger fraction. Further, we
present a sample of 13 galaxies observed with the OSIRIS integral
field spectrograph and the Keck laser-guide star adaptive optics
system which demonstrate the prevalence of high velocity
dispersions 80 km/s and generally little in the way of spatially
resolved velocity gradients, inconsistent with favored rotating
disk models.We discuss the implications of these results for galaxy
formation models, including gas accretion via cold flows and
gravitational instability of early gas-rich galactic disks.
General
Is the information for this product incomplete, wrong or inappropriate?
Let us know about it.
Does this product have an incorrect or missing image?
Send us a new image.
Is this product missing categories?
Add more categories.
Review This Product
No reviews yet - be the first to create one!
Welcome to Loot.co.za!
Sign in / Register |Wishlists & Gift Vouchers |Help | Advanced search
