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

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

  • A. Pagul
  • F. J. Sanchez
  • I. Davidzon
  • Bahram Mobasher

We present a multiband 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 to those in real extragalactic surveys. The photometric catalogs contain a total of over 32,000 entries, with 50% completeness at a threshold of mag(AB) similar to 29.1 for unblended sources and mag(AB) similar to 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.

OriginalsprogEngelsk
Artikelnummer27
TidsskriftAstrophysical Journal
Vol/bind256
Udgave nummer2
Antal sider20
ISSN0067-0049
DOI
StatusUdgivet - 20 okt. 2021

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