Early results from GLASS-JWST. II: NIRCam extra-galactic imaging and photometric catalog

TL;DR

This paper presents early JWST NIRCam imaging data and a multi-wavelength catalog of 6368 sources, enabling initial scientific exploration of faint galaxies in the Abell 2744 cluster region.

Contribution

It provides the first reduced images and a multi-band photometric catalog from JWST NIRCam observations, including data processing procedures and community resources.

Findings

Catalog contains 6368 sources with a limiting magnitude of 29.7 at 5σ in F444W.

Images and catalog are released for community use and evaluation.

Procedures for image defect mitigation are discussed.

Abstract

We present the reduced images and multi-wavelength catalog of the first JWST NIRCam extra-galactic observations from the GLASS Early Release Science Program, obtained as coordinated parallels of the NIRISS observations of the Abell 2744 cluster. Images in seven bands (F090W, F115W, F150W, F200W, F277W, F356W, F444W) have been reduced using an augmented version of the official JWST pipeline; we discuss the procedures adopted to remove or mitigate defects in the raw images. We obtain a multi--band catalog by means of forced aperture photometry on PSF-matched images at the position of F444W-detected sources. The catalog is intended to enable early scientific investigations, and it is optimized for faint galaxies; it contains 6368 sources, with limiting magnitude 29.7 at 5$\sigma$ in F444W. We release both images and catalog in order to allow the community to familiarize with the JWST NIRCam data and evaluate their merit and limitations given the current level of knowledge of the instrument.