J/A+A/707/A110 eJWST AGN observation catalogue (Lenk+, 2026)
The eJWST active galactic nuclei observation catalogue.
Lenk V., Labiano A., Circosta C., Alonso-Herrero A., Wylezalek D.
<Astron. Astrophys. 707, A110 (2026)>
=2026A&A...707A.110L 2026A&A...707A.110L (SIMBAD/NED BibCode)
ADC_Keywords: Active gal. nuclei ; Redshifts ; Optical ; Infrared ;
Radio sources
Keywords: catalogs - galaxies: active
Abstract:
The European Archive of the James Webb Space Telescope (eJWST)
provides access to all data collected by The James Webb Space
Telescope (JWST). JWST's capabilities span from studying early
universe galaxy formation to probing exoplanet atmospheres.
Specifically, for Active Galactic Nuclei (AGN), JWST offers
unparalleled opportunities, enabling investigation into AGN phenomena
with unprecedented detail through high-resolution imaging,
spectroscopy, and photometric data.
This study aims to compile and release a catalogue of all AGN
observations conducted with JWST. Using eJWST, we systematically
filter and organize these observations to facilitate access and
retrieval of all of JWST's data products related to AGNs. Our goal
is to provide the community with a valuable resource for their
research.
We compiled the AGN observations in eJWST using specific keywords set
by the principal investigators in their proposals, manually reviewing
the approved programs of JWST, as well as cross-matching all available
observations with available AGN catalogues such as the Million Quasar
catalogue, the SDSS MaNGA AGN catalogue, the CDFS catalogue, and
others.
The resulting catalogue contains a total of 3242 individual AGNs
included in JWST observations. This is one of the first extensive
collections of AGN observations from the JWST. It includes detailed
information about the targets (name, coordinates, redshift), specifics
of the JWST observations (instrument, aperture, filter, etc.), and
provides links for data downloads.
Description:
This catalogue was constructed by systematically filtering AGN
observations in the eJWST archive using proposal keywords and by
cross-matching the sources with major AGN catalogues. The observations
included span up to 2025-03-20. The catalogue is updated annually,
with the most recent release available at:
https://github.com/VirginiaLenk1/AGNs-in-eJWST.git
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 1928 407910 The eJWST AGN observation catalogue (table C2)
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See also:
V/158 : Millions of Optical Radio/X-ray Associations (MORX) v2
(Flesch, 2023)
J/A+A/661/A5 : The eFEDS AGN catalog (Liu+, 2022)
J/ApJ/850/66 : Stripe 82X survey multiwavelength catalog (Ananna+, 2017)
J/ApJS/228/2 : Chandra Deep Field-South survey: 7Ms sources (Luo+, 2017)
J/ApJS/261/2 : BASS. XXII. The Swift/BAT AGN Sp. Survey DR2 cat. (Koss+, 2022)
VII/258 : Quasars and Active Galactic Nuclei (13th Ed.)
(Veron-Cetty+ 2010)
J/A+A/356/445 : ROSAT-FIRST AGN correlation (Brinkmann+, 2000)
J/A+A/674/A41 : Composite quasar spectra from Gaia DR3 (Gaia Coll., 2023)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 29 A29 --- Name Object name (1)
31- 41 F11.7 deg RAdeg Right Ascension (J2000) (2)
43- 53 F11.7 deg DEdeg Declination (J2000) (2)
55- 176 A122 --- Type Object classification (3)
178- 185 A8 --- Ref Reference for Name/Coordinates
187- 198 E12.10 --- z ? Redshift (4)
200- 203 A4 --- zType Redshift type (5)
205- 224 A20 --- r_z Redshift reference (bibcode) (6)
226 A1 --- f_z [y/n] Redshift from NED flag
228- 285 A58 --- ObsID Observation identifier (7)
287- 300 A14 --- Inst JWST Instrument (7)
302- 324 A23 --- Aperture JWST Aperture (7)
326- 342 A17 --- Exptype JWST Exposure type (7)
344- 361 A18 --- Filter JWST Filter (7)
363- 366 F4.1 --- Caliblevel Calibration level (7)
368- 377 F10.3 s Exptime Total exposure time (7)
379- 383 A5 --- Public [True/False ] Public access flag (7)
385- 388 I4 --- PropID [1021/9263] Proposal identifier (7)
390- 410 A21 "date" RelDate Release Date (UTC) (7)
412- 422 A11 --- Intent Observation Intent (8)
424- 431 F8.4 0.1nm CentWave ? Central Wavelength (7)
433- 437 A5 --- Targeted [True/False ] Targeted flag (7)
439- 615 A177 --- DataLink URL to data download
617- 688 A72 --- PropIDLink URL to proposal information
690 A1 --- TSOVISIT [t/f] Time-series observation flag (7)
692- 720 A29 --- eJWST eJWST Name
722- 742 F21.16 deg RA2deg ? Right Ascension (J2000) from eJWST
744- 763 F20.16 deg DE2deg ? Declination (J2000) from eJWST
765- 886 A122 --- TypeeJWST eJWST object type
888- 897 E10.8 --- zNED ? Redshift from NED
899- 917 A19 --- r_zNED NED redshift reference
919- 922 A4 --- zTypeNED NED redshift type
924- 948 A25 --- Milliquas Milliquas Name
950- 961 F12.7 deg RA3deg ? Right Ascension (J2000) from Milliquas
963- 973 F11.7 deg DE3deg ? Declination (J2000) from Milliquas
975- 996 A22 --- XName X-ray name from Milliquas
998-1019 A22 --- RName Radio name from Milliquas
1021-1026 F6.3 --- zMilli ? Redshift from Milliquas
1028-1031 A4 --- zTypeMilli Milliquas redshift type
1033-1051 A19 --- r_zMilli Milliquas redshift reference
1053-1070 A18 --- TypeMilli Milliquas object type
1072-1088 A17 --- MaNGA MaNGA Name
1090-1100 F11.6 deg RA4deg ? Right Ascension (J2000) from MaNGA
1102-1112 F11.7 deg DE4deg ? Declination (J2000) from MaNGA
1114-1126 F13.10 --- zMaNGA ? Redshift from MaNGA
1128-1131 A4 --- zTypeMaNGA MaNGA redshift type
1133-1151 A19 --- r_zMaNGA MaNGA redshift reference
1153-1178 A26 --- TypeMaNGA MaNGA object type
1180-1201 A22 --- eFEDS eFEDS Name
1203-1221 F19.14 deg RA5deg ? Right Ascension (J2000) from eFEDS
1223-1241 F19.16 deg DE5deg ? Declination (J2000) from eFEDS
1243-1254 F12.9 --- zeFEDS ? Redshift from eFEDS
1256-1259 A4 --- zTypeeFEDS eFEDS redshift type
1261-1279 A19 --- r_zeFEDS eFEDS redshift reference
1281-1284 I4 --- TypeeFEDS ? eFEDS object type
1286-1305 A20 --- Stripe Stripe Name
1307-1315 F9.1 --- IDStripe ? Stripe ID
1317-1337 F21.16 deg RA6deg ? Right Ascension (J2000) from Stripe
1339-1357 F19.16 deg DE6deg ? Declination (J2000) from Stripe
1359-1370 F12.8 --- zStripe ? Redshift from Stripe
1372-1375 A4 --- zTypeStripe Stripe redshift type
1377-1395 A19 --- r_zStripe Stripe redshift reference
1397-1407 A11 --- TypeStripe Stripe object type
1409-1433 A25 --- CDFS CDFS Name
1435-1441 F7.1 --- IDCDFS ? CDFS ID
1443-1452 F10.6 deg RA7deg ? Right Ascension (J2000) from CDFS
1454-1463 F10.6 deg DE7deg ? Declination (J2000) from CDFS
1465-1470 F6.3 --- zCDFS ? Redshift from CDFS
1472-1475 A4 --- zTypeCDFS CDFS redshift type
1477-1496 A20 --- r_zCDFS CDFS redshift reference
1498-1500 A3 --- TypeCDFS CDFS object type
1502-1523 A22 --- BASS BASS Name
1525-1531 F7.1 --- IDBASS ? BASS ID
1533-1544 F12.7 deg RA8deg ? Right Ascension (J2000) from BASS
1546-1556 F11.7 deg DE8deg ? Declination (J2000) from BASS
1558-1568 F11.8 --- zBASS ? Redshift from BASS
1570-1573 A4 --- zTypeBASS BASS redshift type
1575-1593 A19 --- r_zBASS BASS redshift reference
1595-1614 A20 --- TypeBASS BASS object type
1616-1632 A17 --- Veroncat Veroncat Name
1634-1654 F21.16 deg RA9deg ? Right Ascension (J2000) from Veroncat
1656-1675 F20.16 deg DE9deg ? Declination (J2000) from Veroncat
1677-1682 F6.3 --- zVeroncat ? Redshift from Veroncat
1684 A1 --- zTypeVeroncat Veroncat redshift type
1686-1704 A19 --- r_zVeroncat Veroncat redshift reference
1706-1727 A22 --- TypeVeroncat Veroncat object type
1729-1743 A15 --- Rosat Rosat Name
1745-1763 F19.14 deg RA10deg ? Right Ascension (J2000) from Rosat
1765-1783 F19.15 deg DE10deg ? Declination (J2000) from Rosat
1785-1790 F6.3 --- zRosat ? Redshift from Rosat
1792 A1 --- zTypeRosat Rosat Description of zType (Rosat)
1794-1812 A19 --- r_zRosat Rosat Description of zRef (Rosat)
1814-1820 A7 --- TypeRosat Rosat objType (Rosat)
1822-1849 A28 --- Gaia Gaia Name
1851-1871 F21.16 deg RA11deg ? Right Ascension (J2000) from Gaia
1873-1892 F20.16 deg DE11deg ? Declination (J2000) from Gaia
1894-1909 A16 --- Swiftbat Swiftbat Name
1911-1919 F9.4 deg RA12deg ? Right Ascension (J2000) from Swiftbat
1921-1928 F8.4 deg DE12deg ? Declination (J2000) from Swiftbat
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Note (1): Object names come from the literature (see Reference column).
Priority was given to Milliquas due to completeness. CDFS object names were
derived from their position in HHMMSS.SS+DDMMSS.S format.
Names from eJWST should be used with caution, as they are usually introduced
by the proposer and may not follow a standard convention.
Note (2): RA and Dec are in ICRS coordinates (J2000). Positions for targeted
AGNs come from the eJWST archive. Non-targeted AGNs use catalogues listed in
the Reference columns. Values are rounded to 7 decimals for display; full
precision is in the respective catalogue columns. Gaia coordinates were
shifted to J2000.
Note (3): Source classification (e.g., Seyfert, QSO, BL Lac, LINER) is from
proposer descriptions for targeted AGNs and from catalogues for non-targeted
AGNs. Codes were harmonized:
"NL" = narrow-line,
"BL" = broad-line,
"?" = uncertain,
"??" = highly questionable.
Proposer descriptions are kept as provided by eJWST.
Note (4): Redshifts are from literature, either from NED or the respective
catalogues, with NED values prioritized. Missing values are marked as NaN.
Note (5): Technique for redshift determination is taken from NED (standard
convention) or, if unavailable, from catalogues. NED values are prioritized.
Terms were harmonized:
spectroscopic = "S",
photometric = "P";
unknown cases = "U".
Note (6): Redshift reference is a bibcode for each object. Values are from
NED if available, otherwise from the respective catalogues.
Note (7): Instrument configuration (filter, aperture, exposure time) and
observation-specific information (observation ID, proposal ID, etc.) are from
JWST exposure metadata in the eJWST archive.
Note (8): Intended purpose of observation is labeled as follows:
- Science = scientific observation targeting a specific object or area.
- Calibration = used to calibrate instruments or observing modes.
- Background = background observation from MAST or eJWST keywords.
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Acknowledgements:
Virginia Lenk, virginialenk(at)gmx.de
References:
Comerford et al., 2024ApJ...963...53C 2024ApJ...963...53C
An Excess of AGNs Triggered by Galaxy Mergers in MaNGA Galaxies
Lutz et al., 2018A&A...609A...9L 2018A&A...609A...9L
Swift-BAT active galactic nuclei prefer circumnuclear star formation
(End) Patricia Vannier [CDS] 07-Dec-2025