SCUBADive I: JWST+ALMA Analysis of 289 sub-millimeter galaxies in COSMOS-Web
Jed McKinney, Caitlin M. Casey, Arianna S. Long, Olivia R. Cooper,, Sinclaire M. Manning, Maximilien Franco, Hollis Akin, Erini Lambrides, Elaine, Gammon, Camila Silva, Fabrizio Gentile, Jorge A. Zavala, Aristeidis, Amvrosiadis, Irma Andika, Malte Brinch, Jaclyn B. Champagne

TL;DR
This study constructs a detailed sample of 289 sub-millimeter galaxies in COSMOS-Web using JWST and ALMA data, revealing their properties, morphologies, and clustering behavior at high redshifts.
Contribution
It provides the first large, joint JWST and ALMA analysis of sub-millimeter galaxies, including new insights into their redshifts, morphologies, and clustering.
Findings
Average redshift z=2.6 and stellar mass log(M*)=11.1.
30% of galaxies have no previous optical/near-infrared detections.
Clustering within 10 arcseconds is twice as high as random expectation.
Abstract
JWST has enabled detecting and spatially resolving the heavily dust-attenuated stellar populations of sub-millimeter galaxies, revealing detail that was previously inaccessible. In this work we construct a sample of 289 sub-millimeter galaxies with detailed joint ALMA and JWST constraints in the COSMOS field. Sources are originally selected using the SCUBA-2 instrument and have archival ALMA observations from various programs. Their JWST NIRCam imaging is from COSMOS-Web and PRIMER. We extract multi-wavelength photometry in a manner that leverages the unprecedented near-infrared spatial resolution of JWST, and fit the data with spectral energy distribution models to derive photometric redshifts, stellar masses, star-formation rates and optical attenuation. The sample has an average z=2.6, A_V=2.5, SFR=270 and log(M*)=11.1. There are 81 (30%) galaxies that have no previous…
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Taxonomy
TopicsAstronomy and Astrophysical Research · Galaxies: Formation, Evolution, Phenomena · Astronomical Observations and Instrumentation
