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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
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Abstract

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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

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