The JCMT SCUBA-2 Survey of the James Webb Space Telescope North Ecliptic Pole Time-Domain Field

Minhee Hyun, Myungshin Im, Ian R. Smail, William D. Cotton, Jack E. Birkin, Satoshi Kikuta, Hyunjin Shim, Christopher N.A. Willmer, James J. Condon, Rogier A. Windhorst, Seth H. Cohen, Rolf A. Jansen, Chun Ly, Yuichi Matsuda, Giovanni G. Fazio, A. M. Swinbank, Haojing Yan

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

The James Webb Space Telescope Time-Domain Field (JWST-TDF) is an ∼14′ diameter field near the North Ecliptic Pole that will be targeted by one of the JWST Guaranteed Time Observations programs. Here, we describe our James Clerk Maxwell Telescope SCUBA-2 850 μm imaging of the JWST-TDF and present the submillimeter source catalog and properties. We also present a catalog of radio sources from Karl J. Jansky Very Large Array 3 GHz observations of the field. These observations were obtained to aid JWST's study of dust-obscured galaxies that contribute significantly to cosmic star formation at high redshifts. Our deep 850 μm map covers the JWST-TDF at a noise level of σ 850µm = 1.0 mJy beam−1, detecting 83/31 sources in the main/supplementary signal-to-noise ratio (S/N > 4 / S/N = 3.5-4) sample, respectively. The 3 GHz observations cover a 24′ diameter field with a 1σ noise of 1 μJy beam−1 at a 0.″7 FWHM. We identified eighty-five 3 GHz counterparts to sixty-six 850 μm sources and then matched these with multiwavelength data from the optical to the mid-infrared wave bands. We performed spectral energy distribution fitting for 61 submillimeter galaxies (SMGs) matched with optical/near-infrared data, and found that SMGs at S/N > 4 have a median value of z phot = 2.22 ± 0.12, star formation rates of 300 ± 40 M yr−1 (Chabrier initial mass function), and typical cold dust masses of 5.9 ± 0.7 × 108 M , in line with bright SMGs from other surveys. The large cold dust masses indicate correspondingly large cool gas masses, which we suggest are a key factor necessary to drive the high star formation rates seen in this population.

Original languageEnglish (US)
Article number19
JournalAstrophysical Journal, Supplement Series
Volume264
Issue number1
DOIs
StatePublished - Jan 1 2023

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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