Templates for Fitting Photometry of Ultra-High-Redshift Galaxies

Abstract

Recent data from the James Webb Space Telescope allow a first glimpse of galaxies at $z\gtrsim 11$. The most successful tool for identifying ultra-high-redshift candidates and inferring their properties is photometric template fitting. However, current methods rely on templates derived from much lower-redshift conditions, including stellar populations older than the age of the Universe at $z>12$, a stellar initial mass function which is physically disallowed at $z>6$, and weaker emission lines than currently observed at $z>7.5$. Here, two sets of synthetic templates, optimized for the expected astrophysics of galaxies at $8<z<12$ and $z>12$, are developed and used to fit three galaxies at $z>12$ from the SMACS0723 field. Using these improved templates, quantitative estimates are produced of the bias in inferred properties from JWST observations at $z>8$ due to these effects. The best-fit redshifts are similar to those found with previous template sets, but the inferred stellar masses drop by as much as 1--1.6 dex, so that stellar masses are no longer seemingly inconsistent with $\Lambda$CDM. The two new template sets are released in formats compatible with EAZY and LePhare.

Additional template files available via github

References in corpus (21)

• The propagation of uncertainties in stellar population synthesis modeling I: The relevance of uncertain aspects of stellar evolution and the IMF to the derived physical properties of galaxies
• EAZY: A Fast, Public Photometric Redshift Code
• A population of red candidate massive galaxies ~600 Myr after the Big Bang
• A Comprehensive Study on Galaxies at z~9-16 Found in the Early JWST Data: UV Luminosity Functions and Cosmic Star-Formation History at the Pre-Reionization Epoch
• Two Remarkably Luminous Galaxy Candidates at $z\approx 10-12$ Revealed by JWST
• The evolution of the galaxy UV luminosity function at redshifts z ~ 8-15 from deep JWST and ground-based near-infrared imaging
• A Long Time Ago in a Galaxy Far, Far Away: A Candidate z ~ 12 Galaxy in Early JWST CEERS Imaging
• Early results from GLASS-JWST. III: Galaxy candidates at z$\sim$9-15
• Stress Testing $\Lambda$CDM with High-redshift Galaxy Candidates
• The chemical enrichment in the early Universe as probed by JWST via direct metallicity measurements at z~8
• Discovery and properties of ultra-high redshift galaxies ($9<z<12$) in the JWST ERO SMACS 0723 Field
• A Spectroscopic Redshift Measurement for a Luminous Lyman Break Galaxy at z=7.730 using Keck/MOSFIRE
• Revealing Galaxy Candidates out to $z\sim 16$ with JWST Observations of the Lensing Cluster SMACS0723
• Variations of the stellar initial mass function in the progenitors of massive early-type galaxies and in extreme starburst environments
• First Batch of Candidate Galaxies at Redshifts 11 to 20 Revealed by the James Webb Space Telescope Early Release Observations
• A first look at the SMACS0723 JWST ERO: spectroscopic redshifts, stellar masses and star-formation histories
• ALMA Lensing Cluster Survey: $HST$ and $Spitzer$ Photometry of 33 Lensed Fields Built with CHArGE
• The Evolving Interstellar Medium of Star-Forming Galaxies, as traced by $\text{Stardust}$
• Implications of a Temperature Dependent IMF I: Photometric Template Fitting
• Implications of a Temperature Dependent IMF II: An Updated View of the Star-Forming Main Sequence
• Implications of a Temperature Dependent IMF III: Mass Growth and Quiescence

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• The UNCOVER Survey: A First-look HST+JWST Catalog of Galaxy Redshifts and Stellar Population Properties Spanning $0.2\lesssim z\lesssim 15$
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