AKARI NEP-Deep: galaxy clustering through the AKARI IRC filters

TL;DR

This study analyzes galaxy clustering in the AKARI NEP-Deep field across multiple infrared filters, revealing that different filters trace distinct galaxy populations and environments, especially star-forming and evolving galaxies at various redshifts.

Contribution

It provides the first comparative clustering analysis across multiple AKARI IRC filters, linking galaxy populations to their environments and evolutionary states.

Findings

Different filters trace distinct galaxy populations.

Mid-infrared filters at z~0.8+ identify evolving galaxies in massive haloes.

Galaxies in these haloes may evolve into elliptical galaxies today.

Abstract

We present a preliminary analysis of clustering of galaxies luminous in the near- and mid-infrared as seen by seven various ilters of the AKARI IRC instrument from 2 $\mu$m to 24 $\mu$m in the the AKARI NEP-Deep field. We compare populations of galaxies detected in different filters and their clustering properties. We conclude that different AKARI filters allow to trace different populations composed mainly of star-forming galaxies located in different environments. In particular, the mid-infrared filters at redshift z $\sim$ 0.8 and higher trace a population of strongly evolving galaxies located in massive haloes which might have ended as elliptical galaxies today.