Misc,

The metallicity properties of zCOSMOS galaxies at 0.2<z<0.8

, , , , , and .
(2011)cite arxiv:1110.4408 Comment: 9 pages, 7 figures, submitted to MNRAS on 20-Sep-2011.

Abstract

We study the metallicity properties of galaxies in the zCOSMOS sample between 0.2<z<0.8. At z<0.46, where Ha and NII are detected, we find the same dependence of metallicity on stellar mass and Star Formation Rate (SFR), the Fundamental Metallicity Relation, found by Mannucci et al. (2010) in SDSS galaxies on a similar redshift range. We extend this relation to higher redshift, 0.49<z<0.8 where the R23 metallicity index can be measured in our data, finding no evidence for evolution, and a metallicity scatter around the relation of about 0.16 dex. This result confirms, with a much higher level of significance with respect to previous works, the absence of evolution of the FMR during the last half of cosmic history.

Tags

Users

  • @miki

Comments and Reviews