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

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 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.

Citation

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. https://doi.org/10.3847/1538-4365/ac9bf4

• 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
• DOI: https://doi.org/10.3847/1538-4365/ac9bf4