NOMADS : Physical Origins And Conditions Of Line-emitting Gas From High-redshift (1 < z < 3) Galaxies

Details NOMADS : Physical Origins And Conditions Of Line-emitting Gas From High-redshift (1 < z < 3) Galaxies NOMADS : Physical Origins And Conditions Of Line-emitting Gas From High-redshift (1 < z < 3) Galaxies

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21740706w&link_type=abstract

American Astronomical Society, AAS Meeting #217, #407.06; Bulletin of the American Astronomical Society, Vol. 43, 2011

Physics

Optics

Scientific paper

We present results from NOMADS (Near-infrared OSIRIS Metallicity, AGN, and Dynamics Survey) of spatially resolved rest-frame optical emission lines (e.g., Hβ, [O III], Hα, and [N II]) for nine star forming galaxies at a redshift range of 1 < z < 3. These results are part of an on-going survey to study the chemical abundances, dynamics, and role of weak active galactic nuclei (AGN) in galaxies that have been used previously in metallicity studies at high-redshift. Using 0.1" spatial scale with the integral field spectrograph OSIRIS coupled to the Keck Adaptive Optics system we can identify, localize, and quantify any contribution from AGN activity in these measurements and map two-dimensional chemical abundances on sub-kiloparsec scales. We present metallicity gradients and kinematics for several high-z galaxies and place constraints on the formation mechanisms of these young, star forming galaxies. In addition, we find that a few of these systems do harbor weak non-thermal activity and we will discuss the role of AGN in galaxy formation. We acknowledge funding support from NASA STScI HF-51265.01.

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