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

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

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


Minhee Hyun

Myungshin Im

William D. Cotton

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Jack Birkin
PGR Student Doctor of Philosophy

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

Haojing Yan


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 JWSTʼs study of dust-obscured galaxies that contribute significantly to cosmic star formation at high redshifts. Our deep 850 μm map covers the JWSTTDF at a noise level of σ850mm = 1.0 mJy beam−1 , detecting 83/31 sources in the main/supplementary signal-tonoise 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/nearinfrared data, and found that SMGs at S/N > 4 have a median value of zphot = 2.22 ± 0.12, star formation rates of 300 ± 40 Me yr−1 (Chabrier initial mass function), and typical cold dust masses of 5.9 ± 0.7 × 108 Me, 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.


Hyun, M., Im, M., Smail, I. R., Cotton, W. D., Birkin, J. E., Kikuta, S., …Yan, H. (2023). The JCMT SCUBA-2 Survey of the James Webb Space Telescope North Ecliptic Pole Time-Domain Field. Astrophysical Journal Supplement, 264(1), Article 19.

Journal Article Type Article
Acceptance Date Sep 26, 2022
Online Publication Date Jan 5, 2023
Publication Date 2023-01
Deposit Date Jun 12, 2023
Publicly Available Date Jun 12, 2023
Journal The Astrophysical Journal Supplement Series
Print ISSN 0067-0049
Electronic ISSN 1538-4365
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 264
Issue 1
Article Number 19


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