The mass-metallicity relation at z~0.7
  The ISM metallicity and the stellar mass are examined in a sample of 66 galaxies at 0.4<z<1, selected from the Gemini Deep Deep Survey (GDDS) and the Canada-France Redshift Survey (CFRS). We observe a mass-metallicity relation similar to that seen in z~0.1 SDSS galaxies, but displaced towards higher masses and/or lower metallicities. Using this sample, and a small sample of z~2.3 LBGs, a redshift dependent mass-metallicity relation is proposed which describes the observed results. 
S. Savaglio, K. Glazebrook, D. Le Borgne, S. Juneau, R. Abraham, D.   Crampton, P. McCarthy, H.-W. Chen, R. Marzke, R. Carlb...