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arXiv · 1910.13451

The KLEVER Survey: Spatially resolved metallicity maps and gradients in a sample of 1.2 < z < 2.5 lensed galaxies

Mirko Curti·Roberto Maiolino·Michele Cirasuolo·Filippo Mannucci·Rebecca J. Williams·Matt Auger·Amata Mercurio·Connor Hayden-Pawson·Giovanni Cresci·Alessandro Marconi·Francesco Belfiore·Michele Cappellari·Claudia Cicone·Fergus Cullen·Massimo Meneghetti·Kazuaki Ota·Yingjie Peng·Max Pettini·Mark Swinbank·Paulina Troncoso
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Abstract

We present near-infrared observations of 42 gravitationally lensed galaxies obtained in the framework of the KMOS Lensed Emission Lines and VElocity Review (KLEVER) Survey, a program aimed at investigating the spatially resolved properties of the ionised gas in 1.2 3$\sigma$) "inverted" gradients are also found, showing an anti-correlation between metallicity and star formation rate density on local scales, possibly suggesting recent episodes of pristine gas accretion or strong radial flows in place. Nevertheless, the individual metallicity maps are characterised by a variety of different morphologies, with flat radial gradients sometimes hiding non-axisymmetric variations on kpc scales which are washed out by azimuthal averages, especially in interacting systems or in those undergoing local episodes of recent star formation.

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Mirko Curti, Roberto Maiolino, Michele Cirasuolo, Filippo Mannucci, Rebecca J. Williams, Matt Auger, Amata Mercurio, Connor Hayden-Pawson, Giovanni Cresci, Alessandro Marconi, Francesco Belfiore, Michele Cappellari, Claudia Cicone, Fergus Cullen, Massimo Meneghetti, Kazuaki Ota, Yingjie Peng, Max Pettini, Mark Swinbank, Paulina Troncoso. 2019-10-29. The KLEVER Survey: Spatially resolved metallicity maps and gradients in a sample of 1.2 < z < 2.5 lensed galaxies. https://doi.org/10.1093/mnras%2Fstz3379

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