A nagy vöröseltolódású AGN-ek katalógusa | The catalogue of high-redshift AGNs

Referált folyóiratcikk | Refereed article on the catalogue:

A catalogue of active galactic nuclei from the first 1.5 Gyr of the Universe       ADS      VizieR

English

This catalog is constantly updated using the latest literature. The catalog contains AGN with redshifts greater than z=4.0.

The current verision contains the following properties:II. equatorial coordinates (right ascension and declination), identier (name), redshift, SDSS optical magnitudes (and their errors), BH mass, reference papers of the discovery, redshift, and BH mass in the bibliographical style of the SAO/NASA Astrophysics Data System, information on the radio detection in FIRST, NVSS, and VLASS, and flux densities from individual VLBI observations and their literature citations.

The latest update was adapted on 18 July 2024.

This is the latest version of the catalog
Basic information on the catalog entries (readme)

[2024.07.18] New objects added, galactic coordinates and VLASS image links removed (see readme for up-to-date column descriptions).

[2024.02.20.] New radio identifications added. Both 1st and 2nd epoch VLASS flux densities and maps are listed.

[2023.11.16.] References were updated. Alternative redshifts were added for 83 quasars in Notes.

[2023.08.09.] ~400 new quasars added, the majority from the latest version of 2023arXiv230801505F (e.g. 2018AJ....155..131M,2018A&A...613A..51P,2023arXiv230606308D,2023A&A...674A..41G,2023arXiv230801230M). Black hole mass and citation columns added.

[2023.03.09.] A new quasar pair added (J2329-0522; 2023arXiv230304357Y).

[2023.02.06.] >400 new quasars added from 2023arXiv230201777Y.

[2023.01.09.] 47 new quasars added, VLBI data revised. J155633+351757 was removed due to dubious redshift value.

[2022.11.03.] New quasars and VLBI data added

[2022.10.13.] 24 new quasars added

[2022.09.13.] SDSS J161555.75+395920.1 was removed, as its newly determined redshift value (2022arXiv220903987W) is below z=4.

[2022.04.26.] Flux densities for 13 quasars from new VLBI observations (2022ApJS..260...49K).

[2022.02.04.] Quasars from SDSSS DR16 and DR16Q were added (see column `Notes'). References were corrected, and 20+ new quasars were added (from 2022MNRAS.511..572O).

[2021.08.10.] Flux density values from VLBI measurements and references were corrected and updated.

[2021.08.04.] Flux densities from the VLASS survey are now included in the catalogue alongside with their cutout-image links. Some columns (class, Xname, Rname) were removed.

[2021.03.03] SDSS J001357.16-083334.7, SDSS J093953.54+290602.6, SDSS J112430.11+503835.3, PSS J1159+1337, SDSS J164829.70+350158.9, and SDSS J234007.83+235801.8 were removed from the catalogue due to their `true' redshifts being lower than z=4.