Comparison Of Galaxies At Redshifts Z 2 With Star-forming Clumps From HST CANDELS Observations To Those From Hydrodynamical Simulations

Details Comparison Of Galaxies At Redshifts Z 2 With Star-forming Clumps From HST CANDELS Observations To Those From Hydrodynamical Simulations Comparison Of Galaxies At Redshifts Z 2 With Star-forming Clumps From HST CANDELS Observations To Those From Hydrodynamical Simulations

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21920201m&link_type=abstract

American Astronomical Society, AAS Meeting #219, #202.01

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Massive, star-forming clumps have been observed in z 2 galaxies. These clumps have been hypothesized to be a major contributor to the build-up of stellar mass during this epoch of high star formation and AGN activity. Using the deepest optical (ACS) and near infra-red (WFC3) observations from the HST Multi-Cycle Treasury CANDELS (Cosmic Assembly Near Infra-Red Deep Extragalactic Legacy Survey - candels.ucolick.org), we compare the properties of these clumps in the rest-frame near-UV and optical to those predicted by the latest cosmologically motivated hydrodynamical simulations (Hydro-ART by Ceverino, Dekel and Primack and Eris by Guedes and Madau). We render these simulated galaxy images to mimic the observed ACS and WFC3 images in CANDELS, and include the effects of dust obscuration, and use the observed simulations to explore measurable differences between in-falling clumps and those that have formed in the disk. We will present our latest results of comparing the observations of CANDELS galaxies with those from the latest hydrodynamical models that provide new and important insights into the nature and role of clumps in the mass assembly of galaxies in the z 2 universe.

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