Going deeper into the dark with COSMOS-Web: JWST unveils the total contribution of Radio-Selected NIRfaint galaxies to the cosmic Star Formation Rate Density

Abstract

We present the first follow-up with JWST of radio-selected NIRfaint galaxies as part of the COSMOS-Web survey. By selecting galaxies detected at radio frequencies ($S_{3GHz}>11.5$ $\mu$Jy; i.e. S/N$>5$) and with faint counterparts at NIR wavelengths (F150W$>26.1$ mag), we collect a sample of 127 likely dusty star-forming galaxies (DSFGs). We estimate their physical properties through SED fitting, compute the first radio luminosity function for these types of sources, and their contribution to the total cosmic star formation rate density. Our analysis confirms that these sources represent a population of highly dust-obscured ($⟨A_{\mathrm{v}}⟩\sim 3.5$ mag), massive ($⟨M_{\star }⟩\sim 10^{10.8}$ M${}_{\odot }$) and star-forming galaxies ($⟨\mathrm{SFR}⟩\sim 300$ M${}_{\odot }$ yr${}^{-1}$) located at $⟨z⟩\sim 3.6$, representing the high-redshift tail of the full distribution of radio sources. Our results also indicate that these galaxies could dominate the bright end of the radio luminosity function and reach a total contribution to the cosmic star formation rate density equal to that estimated only considering NIR-bright sources at $z\sim 4.5$. Finally, our analysis further confirms that the radio selection can be employed to collect statistically significant samples of DSFGs, representing a complementary alternative to the other selections based on JWST colors or detection at FIR/(sub)mm wavelengths.

13 pages, 8 figures, 3 tables. Accepted for publication in Astronomy & Astrophysics

References in corpus (24)

• Cosmic Star Formation History
• The Cosmic Evolution Survey (COSMOS) -- Overview
• UltraVISTA: a new ultra-deep near-infrared survey in COSMOS
• CEERS Key Paper I: An Early Look into the First 500 Myr of Galaxy Formation with JWST
• An ALMA survey of Sub-millimeter Galaxies in the Extended Chandra Deep Field South: Physical properties derived from ultraviolet-to-radio modelling
• COSMOS2020: A panchromatic view of the Universe to $z\sim 10$ from two complementary catalogs
• The Chandra COSMOS Survey, I: Overview and Point Source Catalog
• The VLA-COSMOS Survey: II. Source Catalog of the Large Project
• The Constant Average Relationship between Dust-obscured Star Formation and Stellar Mass from $z=0$ to $z=2.5$
• CEERS Key Paper V: A triality on the nature of HST-dark galaxies
• The East Asian Observatory SCUBA--2 survey of the COSMOS field: unveiling 1147 bright sub-millimeter sources across 2.6 square degrees
• Unveiling the Nature of Infrared Bright, Optically Dark Galaxies with Early JWST Data
• Automated Mining of the ALMA Archive in the COSMOS Field (A3COSMOS): I. Robust ALMA Continuum Photometry Catalogs and Stellar Mass and Star Formation Properties for ~700 Galaxies at z=0.5-6
• Euclid preparation: XVIII. Cosmic Dawn Survey. Spitzer observations of the Euclid deep fields and calibration fields
• Mapping Obscuration to Reionization with ALMA (MORA): 2mm Efficiently Selects the Highest-Redshift Obscured Galaxies
• Illuminating the dark side of cosmic star formation two billion years after the Big Bang
• A new estimate of the cosmic star formation density from a radio-selected sample, and the contribution of $H$-dark galaxies at $z\ge 3$
• An ALMA Spectroscopic Survey of the Brightest Submillimeter Galaxies in the SCUBA-2-COSMOS field (AS2COSPEC): Survey Description and First Results
• The Structure of Massive Star-Forming Galaxies from JWST and ALMA: Dusty, High Redshift Disk Galaxies
• Unveiling the hidden universe with JWST: The contribution of dust-obscured galaxies to the stellar mass function at $z\sim 3-8$
• A${}^3$COSMOS and A${}^3$GOODSS: Continuum Source Catalogues and Multi-band Number Counts
• Illuminating the Dark Side of Cosmic Star Formation III: Building the largest homogeneous sample of Radio-Selected Dusty Star-Forming Galaxies in COSMOS with PhoEBO
• An ultra-deep multi-band VLA survey of the faint radio sky (COSMOS-XS): New constraints on the cosmic star formation history
• Not-so-little Red Dots: Two massive and dusty starbursts at z~5-7 pushing the limits of star formation discovered by JWST in the COSMOS-Web survey

Cited by in corpus (4)

• HELM's deep: Highly Extincted Low-Mass galaxies seen by JWST
• Something Bright at the Edge of Everything: A Uniquely JWST-Dark Radio Source in COSMOS
• Star formation at z$\sim$0.9 from the OTELO survey: A comprehensive view combining deep optical spectroscopy and infrared data
• The Evolution of the SFR-M_* relation at 0.1<z<4: Environmental and Morphological Dependencies