New multiple AGN systems with subarcsec separation: Confirmation of candidates selected via the novel GMP method
| Autor: | A. Ciurlo, F. Mannucci, S. Yeh, A. Amiri, S. Carniani, C. Cicone, G. Cresci, E. Lusso, A. Marasco, C. Marconcini, A. Marconi, E. Nardini, E. Pancino, P. Rosati, K. Rubinur, P. Severgnini, M. Scialpi, G. Tozzi, G. Venturi, C. Vignali, M. Volonteri |
|---|---|
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Astronomy & Astrophysics. 671:L4 |
| ISSN: | 1432-0746 0004-6361 |
| DOI: | 10.1051/0004-6361/202345853 |
| Popis: | The existence of multiple active galactic nuclei (AGN) at small projected distances on the sky is due to either the presence of multiple, in-spiraling SMBHs, or to gravitational lensing of a single AGN. Both phenomena allow us to address important astrophysical and cosmological questions. However, few kpc-separation multiple AGN 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 AGNs candidates. In all of these systems, we detect two or more components with sub-arcsec 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 AGN/star alignment. 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. 6 pages, 2 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|