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PEARLS: JWST counterparts of microjansky radio sources in the time domain field

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.3847/1538-4357/acfdfb
AuthorSearch for: ORCID identifier: https://orcid.org/0000-0002-9895-5758; Search for: ORCID identifier: https://orcid.org/0000-0003-1436-7658; Search for: ORCID identifier: https://orcid.org/0000-0001-7411-5386; Search for: ORCID identifier: https://orcid.org/0000-0003-3329-1337; Search for: ORCID identifier: https://orcid.org/0000-0001-9262-9997; Search for: ORCID identifier: https://orcid.org/0000-0002-7791-3671; Search for: ORCID identifier: https://orcid.org/0000-0002-9816-1931; Search for: ORCID identifier: https://orcid.org/0000-0003-1268-5230; Search for: ORCID identifier: https://orcid.org/0000-0002-6610-2048; Search for: ORCID identifier: https://orcid.org/0000-0002-7265-7920; Search for: ORCID identifier: https://orcid.org/0000-0001-8156-6281; Search for: ORCID identifier: https://orcid.org/0000-0001-7410-7669; Search for: ORCID identifier: https://orcid.org/0000-0003-1949-7638; Search for: ORCID identifier: https://orcid.org/0000-0001-9491-7327; Search for: ORCID identifier: https://orcid.org/0000-0003-1625-8009; Search for: ORCID identifier: https://orcid.org/0000-0001-9440-8872; Search for: 1ORCID identifier: https://orcid.org/0000-0001-6434-7845; Search for: ORCID identifier: https://orcid.org/0000-0001-6342-9662; Search for: ORCID identifier: https://orcid.org/0000-0002-6150-833X; Search for: ORCID identifier: https://orcid.org/0000-0003-3382-5941; Search for: ORCID identifier: https://orcid.org/0000-0003-0429-3579; Search for: ORCID identifier: https://orcid.org/0000-0001-7016-5220; Search for: ORCID identifier: https://orcid.org/0000-0003-0894-1588; Search for: ORCID identifier: https://orcid.org/0000-0001-9052-9837; Search for: ORCID identifier: https://orcid.org/0000-0001-7592-7714; Search for: ORCID identifier: https://orcid.org/0000-0001-8751-3463; Search for: ORCID identifier: https://orcid.org/0000-0001-7694-4129; Search for: ORCID identifier: https://orcid.org/0000-0003-4875-6272; Search for: ORCID identifier: https://orcid.org/0000-0002-0005-2631; Search for: ORCID identifier: https://orcid.org/0000-0003-0883-2226; Search for: ORCID identifier: https://orcid.org/0000-0003-0202-0534; Search for: ORCID identifier: https://orcid.org/0000-0002-2115-1137; Search for: ORCID identifier: https://orcid.org/0000-0001-7363-6489; Search for: ORCID identifier: https://orcid.org/0000-0003-4738-4251; Search for: ORCID identifier: https://orcid.org/0000-0003-3214-9128; Search for: ORCID identifier: https://orcid.org/0000-0003-1991-370X; Search for: ORCID identifier: https://orcid.org/0000-0002-5187-7107; Search for: ORCID identifier: https://orcid.org/0000-0003-4030-3455; Search for: ORCID identifier: https://orcid.org/0000-0001-8887-2257; Search for: ORCID identifier: https://orcid.org/0000-0001-5648-9069; Search for: ORCID identifier: https://orcid.org/0000-0001-7095-7543
Affiliation
  1. National Research Council Canada. Herzberg Astronomy and Astrophysics
FunderSearch for: NASA ∣ SMD ∣ Astrophysics Division; Search for: NASA ∣ Goddard Space Flight Center; Search for: EC ∣ European Research Council; Search for: Australian Research Council Centre of Excellence for All-Sky Astrophysics; Search for: National Science Foundation; Search for: Korea Astronomy and Space Science Institute; Search for: National Research Foundation of Korea; Search for: DOD ∣ USN ∣ ONR ∣ U.S. Naval Research Laboratory
FormatText, Article
Subjectradio continuum emission; active galaxy; radio astronomy; AGN host galaxies; extragalactic radio sources; high-redshift galaxies; radio galaxies
Abstract
The Time Domain Field (TDF) near the North Ecliptic Pole in JWST's continuous-viewing zone will become a premier "blank field" for extragalactic science. JWST/NIRCam data in a 16 arcmin² portion of the TDF identify 4.4 μm counterparts for 62 of 63 3 GHz sources with S(3 GHz) > 5 μJy. The one unidentified radio source may be a lobe of a nearby Seyfert galaxy, or it may be an infrared-faint radio source. The bulk properties of the radio-host galaxies are consistent with those found by previous work: redshifts range from 0.14–4.4 with a median redshift of 1.33. The radio emission arises primarily from star formation in ∼2/3 of the sample and from an active galactic nucleus (AGN) in ∼1/3, but just over half the sample shows evidence for an AGN either in the spectral energy distribution or by radio excess. All but three counterparts are brighter than magnitude 23 AB at 4.4 μm, and the exquisite resolution of JWST identifies correct counterparts for sources for which observations with lower angular resolution would misidentify a nearby bright source as the counterpart when the correct one is faint and red. Up to 11% of counterparts might have been unidentified or misidentified absent NIRCam observations.
Publication date
PublisherAmerican Astronomical Society
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In
LanguageEnglish
Peer reviewedYes
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Record identifier599894a1-881a-41f8-959f-4a8afd002b59
Record created2024-07-11
Record modified2024-07-16
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