Hubble Frontier Field Clusters and their Parallel Fields: Photometric and Photometric Redshift Catalogs

TL;DR

This paper provides comprehensive multi-band photometric and redshift catalogs for six Hubble Frontier Field clusters and their parallel fields, enabling detailed extragalactic studies with publicly available data and validated methods.

Contribution

It introduces new multi-wavelength photometric catalogs and redshift estimates for Hubble Frontier Fields, along with validation and software tools for future surveys.

Findings

Over 32,000 sources cataloged with high completeness.

Photometric redshifts have 10.3% outlier rate and 0.067 scatter.

Public release of catalogs, maps, and models for community use.

Abstract

We present a multi-band analysis of the six Hubble Frontier Field clusters and their parallel fields, producing catalogs with measurements of source photometry and photometric redshifts. We release these catalogs to the public along with maps of intracluster light and models for the brightest galaxies in each field. This rich data set covers a wavelength range from 0.2 to 8 $\mu m$, utilizing data from the Hubble Space Telescope, Keck Observatories, Very Large Telescope array, and Spitzer Space Telescope. We validate our products by injecting into our fields and recovering a population of synthetic objects with similar characteristics as in real extragalactic surveys. The photometric catalogs contain a total of over 32,000 entries with 50\% completeness at a threshold of $\mathrm{mag_{AB}}\sim 29.1$ for unblended sources, and $\mathrm{mag_{AB}}\sim 29$ for blended ones, in the IR-Weighted detection band. Photometric redshifts were obtained by means of template fitting and have an average outlier fraction of 10.3\% and scatter $\sigma = 0.067$ when compared to spectroscopic estimates. The software we devised, after being tested in the present work, will be applied to new data sets from ongoing and future surveys.