The GLASS-JWST Early Release Science Program. IV. Data release of 263 spectra from 245 unique sources

TL;DR

This paper releases a large set of reduced JWST spectra from the GLASS-JWST program, providing accurate redshifts, a high-resolution spectral template, and publicly available data to advance astronomical research.

Contribution

It provides the first high-resolution JWST spectral template and a comprehensive data release of spectra and redshifts from the GLASS-JWST program.

Findings

Redshifts for 200 sources with high accuracy

First high-resolution JWST spectral template from 2000 to 20000 Å

Public availability of spectra and catalogs

Abstract

We release fully reduced spectra obtained with NIRSpec onboard JWST as part of the GLASS-JWST Early Release Science Program and a follow-up Director's Discretionary Time program 2756. From these 263 spectra of 245 unique sources, acquired with low ($R =30-300$) and high dispersion ($R\sim2700$) gratings, we derive redshifts for 200 unique sources in the redshift range $z=0-10$. We describe the sample selection and characterize its high completeness as a function of redshift and apparent magnitude. Comparison with independent estimates based on different methods and instruments shows that the redshifts are accurate, with 80\% differing less than 0.005. We stack the GLASS-JWST spectra to produce the first high-resolution ($R \sim 2700$) JWST spectral template extending in the rest frame wavelength from 2000~\AA\ to 20, 000~\AA. Catalogs, reduced spectra, and template are made publicly available to the community.