Overview of North Ecliptic Pole Deep multi-wavelength Survey (NEP-Deep)

TL;DR

The NEP-Deep multi-wavelength survey provides the largest sample of mid-infrared selected galaxies, enabling detailed study of star formation and AGN activity from X-ray to radio wavelengths up to redshift 2.

Contribution

This paper presents recent updates on the NEP-Deep survey, highlighting its unique continuous mid-infrared coverage and its potential to elucidate cosmic star formation history.

Findings

Largest sample of 15μm/18μm selected galaxies.

Continuous mid-infrared filter coverage from 7 to 24μm.

Progress towards understanding star formation history at z=1--2.

Abstract

The recent updates of the North Ecliptic Pole deep (0.5~deg$^2$, NEP-Deep) multi-wavelength survey covering from X-ray to radio-wave is presented. The NEP-Deep provides us with several thousands of 15~$\mu$m or 18~$\mu$m selected sample of galaxies, which is the largest sample ever made at this wavelengths. A continuous filter coverage in the mid-infrared wavelength (7, 9, 11, 15, 18, and 24~$\mu$m) is unique and vital to diagnose the contributions from starbursts and AGNs in the galaxies out to $z$=2.The new goal of the project is to resolve the nature of the cosmic star formation history at the violent epoch (e.g. $z$=1--2), and to find a clue to understand its decline from $z$=1 to present universe by utilizing the unique power of the multi-wavelength survey. The progress in this context is briefly mentioned.