Abstract

We present results of our investigation into the metallicity history of disk galaxies between redshifts 0<z<3. Theory predicts that metallicity changes less rapidly than star formation rate as a function of redshift, but until now, there has been no observational foundation for the metallicity history of star-forming galaxies. Our local comparison samples include the Nearby Field Galaxy Survey (NFGS) and an objectively selected sample of galaxy pairs. We find that the central metallicities in close pairs are affected by gas flows triggered by an interaction. We compare the metallicity properties of our local field galaxies with a large sample of galaxies from the GOODS Field North and the Lyman Break Galaxies. In our preliminary analysis, we observe metallicity evolution of 0.15 dex per unit redshift.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.