2023A&A...671L...4C


Query : 2023A&A...671L...4C

2023A&A...671L...4C - Astronomy and Astrophysics, volume 671, L4 (2023/3-1)

New multiple AGN systems with subarcsec separation: Confirmation of candidates selected via the novel GMP method.

CIURLO A., MANNUCCI F., YEH S., AMIRI A., CARNIANI S., CICONE C., CRESCI G., LUSSO E., MARASCO A., MARCONCINI C., MARCONI A., NARDINI E., PANCINO E., ROSATI P., RUBINUR K., SEVERGNINI P., SCIALPI M., TOZZI G., VENTURI G., VIGNALI C. and VOLONTERI M.

Abstract (from CDS):

The existence of multiple active galactic nuclei (AGNs) at small projected distances on the sky is due to either the presence of multiple, inspiraling supermassive black holes, or to gravitational lensing of a single AGN. Both phenomena allow us to address important astrophysical and cosmological questions. However, few kiloparsec-separation multiple AGNs are currently known. Recently, the newly developed Gaia multi-peak (GMP) method provided numerous new candidate members of these populations. We present spatially resolved, integral-field spectroscopy of a sample of four GMP-selected multiple AGN candidates. In all of these systems, we detect two or more components with subarcsec separations. We find that two of the systems are dual AGNs, one is either an intrinsic triple or a lensed dual AGN, while the last system is a chance alignment of an AGN and a star. Our observations double the number of confirmed multiple AGNs at projected separations below 7 kpc at z > 0.5, present the first detection of a possible triple AGN in a single galaxy at z > 0.5, and successfully test the GMP method as a novel technique to discover previously unknown multiple AGNs.

Abstract Copyright: © The Authors 2023

Journal keyword(s): galaxies: active - quasars: general - quasars: emission lines

Simbad objects: 8

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Number of rows : 8
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 QSO J1026+6023 QSO 10 26 31.1130639816 +60 23 30.235099668   20.55 20.07     ~ 21 0
2 QSO J1608+2716 QSO 16 08 29.2319686680 +27 16 26.894058816           ~ 11 0
3 QSO J1613+1708A QSO 16 13 19.9986696720 +17 08 39.398784180           ~ 1 0
4 QSO J1613+1708 PaG 16 13 20.01314 +17 08 39.2565   19.38 19.18     ~ 14 0
5 QSO J1613+1708B QSO 16 13 20.0425266067 +17 08 38.982647148           ~ 1 0
6 QSO J2335+3201 PaG 23 35 22.51563 +32 01 09.2294           ~ 9 0
7 QSO J2335+3201B QSO 23 35 22.5218903352 +32 01 09.688291500           ~ 1 0
8 QSO J2335+3201A QSO 23 35 22.5225454432 +32 01 09.074909193           ~ 1 0

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