The Impact of Interactions on Galaxy Metallicity Distributions

Details The Impact of Interactions on Galaxy Metallicity Distributions The Impact of Interactions on Galaxy Metallicity Distributions

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21545532r&link_type=abstract

American Astronomical Society, AAS Meeting #215, #455.32; Bulletin of the American Astronomical Society, Vol. 42, p.478

Astronomy and Astrophysics

Astronomy

Scientific paper

We present evidence that galaxy interactions re-distribute metals internally, leading to changes in nuclear metallicities and metallicity gradients. Using observations and simulations, we show that nuclear metallicities are low compared to galaxies of similar mass, and that radial metallicity gradients are flattened in interacting systems. These results have important consequences for interpreting metallicities at high redshift, when galaxy interactions were frequent.

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