The Physical Properties and Morphologies of Faint Dusty Star-forming Galaxies Identified with JWST

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A90106%2F25%3A00646423" target="_blank" >RIV/67985815:90106/25:00646423 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.3847/1538-4357/ade394" target="_blank" >https://doi.org/10.3847/1538-4357/ade394</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/1538-4357/ade394" target="_blank" >10.3847/1538-4357/ade394</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Physical Properties and Morphologies of Faint Dusty Star-forming Galaxies Identified with JWST

Popis výsledku v původním jazyce

We identify a sample of 234 dusty star-forming galaxies (DSFGs) in the A2744 and GOODS-S fields using JWST/NIRCam-selected galaxies as priors for SCUBA-2 measurements. This method provides a large number of galaxies both above an 850 mu m flux of 2 mJy (47 bright DSFGs) and below (187 faint DSFGs), representing the largest sample of individually identified (i.e., not stacked) faint DSFGs to date. We observe that fF444W and fF150W are tightly correlated with redshift, with fainter sources lying at higher redshifts, suggesting that the observed near-IR flux may be an effective way of selecting high-redshift DSFGs. We study the physical properties and morphologies of the DSFGs through spectral energy distribution fitting and parametric surface brightness profile modeling. Other than the lower star formation rates (SFRs) and total infrared luminosities in the faint DSFGs (SFR =80-45+81 , LIR=11.82-0.36+0.30 ) compared to the bright DSFGs (SFR =254-131+135 , LIR=12.32-0.30+0.20 ), the populations have similar properties. The stellar masses do not appear to be strongly dependent on either the SFRs or the submillimeter flux. These results suggest that the faint DSFGs are drawn from the same population of galaxies as the bright DSFGs. Based on visual inspections, we find a lower merger fraction (similar to 21%) relative to previous Hubble Space Telescope-based studies, suggesting that dust attenuation may have impacted previous estimates of DSFG merger rates.

Název v anglickém jazyce

The Physical Properties and Morphologies of Faint Dusty Star-forming Galaxies Identified with JWST

Popis výsledku anglicky

We identify a sample of 234 dusty star-forming galaxies (DSFGs) in the A2744 and GOODS-S fields using JWST/NIRCam-selected galaxies as priors for SCUBA-2 measurements. This method provides a large number of galaxies both above an 850 mu m flux of 2 mJy (47 bright DSFGs) and below (187 faint DSFGs), representing the largest sample of individually identified (i.e., not stacked) faint DSFGs to date. We observe that fF444W and fF150W are tightly correlated with redshift, with fainter sources lying at higher redshifts, suggesting that the observed near-IR flux may be an effective way of selecting high-redshift DSFGs. We study the physical properties and morphologies of the DSFGs through spectral energy distribution fitting and parametric surface brightness profile modeling. Other than the lower star formation rates (SFRs) and total infrared luminosities in the faint DSFGs (SFR =80-45+81 , LIR=11.82-0.36+0.30 ) compared to the bright DSFGs (SFR =254-131+135 , LIR=12.32-0.30+0.20 ), the populations have similar properties. The stellar masses do not appear to be strongly dependent on either the SFRs or the submillimeter flux. These results suggest that the faint DSFGs are drawn from the same population of galaxies as the bright DSFGs. Based on visual inspections, we find a lower merger fraction (similar to 21%) relative to previous Hubble Space Telescope-based studies, suggesting that dust attenuation may have impacted previous estimates of DSFG merger rates.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

—

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astrophysical Journal

ISSN

0004-637X

e-ISSN

1538-4357

Svazek periodika

988

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

19

Strana od-do

135

Kód UT WoS článku

001563371600001

EID výsledku v databázi Scopus

2-s2.0-105011155162