[62.14] Structural Parameters of Star-forming Galaxies at $z > 3$: Rest-frame Morphologies and Starburst Properties

AAS 205th Meeting, 9-13 January 2005
Session 62 Great Observatories Origins Deep Survey
Poster, Tuesday, January 11, 2005, 9:20am-6:30pm, Exhibit Hall

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[62.14] Structural Parameters of Star-forming Galaxies at z > 3: Rest-frame Morphologies and Starburst Properties

S. Ravindranath, H. Ferguson, M. Giavalisco (STScI), M. Dickinson (NOAO), C. Papovich (University of Arizona), GOODS Team

We present the results from quantitative morphological analysis of star-forming galaxies at z > 3 using images from the Great Observatories Origins Deep Survey (GOODS) and the Hubble Ultra Deep Field (HUDF). Based on the analysis of their surface brightness profiles, we find that exponential disk-like morphology is dominant along with substantial fraction of mergers with multiple cores and substructures. The distribution of axial ratios also suggests an extended configuration for the star-forming region. We use the luminosities and sizes derived from the profile analysis to explore the evolution of star formation rates and starburst intensities in star-forming galaxies at high redshifts.

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