Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-25T00:35:13.844Z Has data issue: false hasContentIssue false
  • English
  • Français

Metallicity gradients in high-z galaxies: insights from the KLEVER Survey

Published online by Cambridge University Press:  03 March 2020

Mirko Curti
Mirko Curti*
Affiliation:
Cavendish Laboratory Kavli Institute for Cosmology, University of Cambridge, Madingley Road CB3 0HA, Cambridge, United Kingdom
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We present reconstructed source plane metallicity maps for a sample of ~30 gravitationally lensed galaxies between 1.2 < z < 2.5, observed in the framework of the KLEVER Survey. Oxygen abundance is derived exploiting a variety of different emission line diagnostics, as provided by the full coverage of the near-infrared bands. The majority of galaxies in our sample present flat radial metallicity gradients, in agreement with galaxy evolution models predicting strong feedback mechanisms in place at these epochs. However, complex patterns as seen in some of our metallicity maps warn against the use of azimuthally-averaged radial gradients as the only observable to constrain chemical evolution models.

Keywords

galaxies: high-redshiftgalaxies: abundancesgalaxies: evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium A30: Astronomy in Focus XXX , August 2018 , pp. 274 - 275
Copyright
© International Astronomical Union 2020

References

Cresci, G., et al., 2010, Nature, 467, 811 CrossRefGoogle Scholar
Sanchez, S., et al., 2014, A&A, 563, A49 Google Scholar
Wuyts, E. et al., 2016, ApJ, 827, 74 CrossRefGoogle Scholar
Wang, X. et al., 2017, ApJ, 837, 89 CrossRefGoogle Scholar