The evolution of resolved kinematics and metallicity from redshift 2.7 to 0.7 with LUCI, SINS/zC-SINF and KMOS3D

Eva Wuyts, Jaron Kurk, Natascha M.Förster Schreiber, Reinhard Genzel, Emily Wisnioski, Kaushala Bandara, Stijn Wuyts, Alessandra Beifiori, Ralf Bender, Gabriel B. Brammer, Andreas Burkert, Peter Buschkamp, C. Marcella Carollo, Jeffrey Chan, Ric Davies, Frank Eisenhauer, Max Fabricius, Matteo Fossati, Sandesh K. Kulkarni, Yoshi FudamotoPhilipp Lang, Simon J. Lilly, Dieter Lutz, Chiara Mancini, Trevor Mendel, Ivelina G. Momcheva, Thorsten Naab, Erica J. Nelson, Alvio Renzini, David Rosario, Roberto P. Saglia, Stella Seitz, Ray M. Sharples, Amiel Sternberg, Sandro Tacchella, Linda J. Tacconi, Pieter Van Dokkum, David J. Wilman

Research output: Contribution to journalArticlepeer-review

Abstract

The KMOS3D survey will provide near-IR IFU observations of a mass-selected sample of ∼600 star-forming galaxies at 0 .7 < z < 2 . 7 with the K-band Multi Object Spectrograph (KMOS) at the VLT.We present kinematic results for a first sample of ∼200 galaxies, focusing on the evolution of the gas velocity dispersion with redshift. Combined with existing measurements, we find an approximate (1+ z ) evolution from z ∼ 4 to the present day, which can be understood from the co-evolution of the gas fraction and specific star formation rate (sSFR) in the the equilibrium picture of galaxy evolution. We combine the KMOS3D sample with data from the LUCI and SINFONI spectrographs, as well as multi-wavelength HST imaging from CANDELS, to address the relations between stellar mass, SFR, and the [N II]/H α flux ratio as an indicator of gas-phase metallicity for a sample of 222 star-forming galaxies. We find a constant slope at the low-mass end of the mass-metallicity relation and can fully describe its redshift evolution through the evolution of the characteristic turnover mass where the relation begins to flatten at the asymptotic metallicity. At a fixed mass and redshift, our data do not show a correlation between the [N II]/H α ratio and SFR.

Original languageEnglish
Pages (from-to)243-246
Number of pages4
JournalProceedings of the International Astronomical Union
Volume10
DOIs
Publication statusPublished - 2014
Externally publishedYes

Keywords

  • Galaxies: evolution
  • Galaxies: formation
  • Galaxies: high-redshift

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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