Physics – Optics
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21712804n&link_type=abstract
American Astronomical Society, AAS Meeting #217, #128.04; Bulletin of the American Astronomical Society, Vol. 43, 2011
Physics
Optics
Scientific paper
We have observed large-scale galactic outflows from resolved clumps in several z 2 galaxies in emission. The observations were made using SINFONI/VLT integral field spectroscopy with adaptive optics of Hα, [NII] and [SII]. We estimate the outflow rate from these Hα-bright, rapidly star-forming clumps as several times the SFR. We also estimate the lifetime of these clumps based on the stellar ages, the gas exhaustion timescale, the metal enrichment timescale and the expansion timescale. We can understand these massive outflow rates in the context of superwinds generated by feedback from active star formation. This result is highly significant as this is the first time that outflows have been detected from spatially resolved clumps, and the information gathered on the fate of these clumps will help us to better understand galaxy formation and evolution at the redshifts at which today’s massive galaxies were formed. This work was possible thanks to the National Science Foundation’s Graduate Research Fellowship Program.
Genzel Reinhard
Newman Sarah
SINS Team
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