LSD and AMAZE: the mass-metallicity relation at z>3

Abstract

We present the first results on galaxy metallicity evolution at z>3 from two projects, LSD (Lyman-break galaxies Stellar populations and Dynamics) and AMAZE (Assessing the Mass Abundance redshift Evolution). These projects use deep near-infrared spectroscopic observations of a sample of ~40 LBGs to estimate the gas-phase metallicity from the emission lines. We derive the mass-metallicity relation at z$>$3 and compare it with the same relation at lower redshift. Strong evolution from z=0 and z=2 to z=3 is observed, and this finding puts strong constrains on the models of galaxy evolution. These preliminary results show that the effective oxygen yields does not increase with stellar mass, implying that the simple outflow model does not apply at z>3.

5 pages, to appear in the IAUS 255 conference proceedings: "Low-Metallicity Star Formation: from the First Stars to Dwarf Galaxies", L.K. Hunt, S. Madden and R. Schneider eds

References in corpus (8)

• Metallicity Calibrations and the Mass-Metallicity Relation for Star-Forming Galaxies
• The Mass-Metallicity Relation at z~2
• The Origin and Evolution of the Mass-Metallicity Relationship for Galaxies: Results from Cosmological N-Body Simulations
• Population III stars: hidden or disappeared ?
• The Structures of Distant Galaxies I: Galaxy Structures and the Merger Rate to z~3 in the Hubble Ultra-Deep Field
• Simulations of Cosmic Chemical Enrichment
• A Possible Origin of the Mass-Metallicity Relation of Galaxies
• Clues for the origin of the fundamental metallicity relations. I: The hierarchical building up of the structure

Cited by in corpus (2)

• Dynamical properties of AMAZE and LSD galaxies from gas kinematics and the Tully-Fisher relation at z~3
• A dynamical mass estimator for high z galaxies based on spectroastrometry