Euclid preparation. The Cosmic Dawn Survey (DAWN) of the Euclid Deep and Auxiliary Fields

TL;DR

The Euclid Cosmic Dawn Survey (DAWN) aims to provide deep, multiwavelength imaging and spectroscopy over 59 square degrees to study galaxy formation and evolution up to redshift 10, complementing Euclid's deep NIR data.

Contribution

This paper presents an overview of the DAWN survey, including its field footprints, observational plans, and primary science goals, enhancing Euclid's capabilities for high-redshift galaxy studies.

Findings

Survey covers 59 deg² with deep NIR imaging.

Provides matched multiwavelength data and spectroscopy.

Aims to measure galaxy properties up to z~10.

Abstract

Euclid will provide deep NIR imaging to $\sim$26.5 AB magnitude over $\sim$59 deg$^2$ in its deep and auxiliary fields. The Cosmic DAWN survey complements the deep Euclid data with matched depth multiwavelength imaging and spectroscopy in the UV--IR to provide consistently processed Euclid selected photometric catalogs, accurate photometric redshifts, and measurements of galaxy properties to a redshift of $z\sim 10$. In this paper, we present an overview of the survey, including the footprints of the survey fields, the existing and planned observations, and the primary science goals for the combined data set.