In this paper we present an overview of the MAGNA (Multiple AGN Activity) project aiming at a comprehensive study of multiple super-massive black hole systems. With the main goal of characterizing the sources in merging systems at different stages of evolution, we selected a sample of objects optically classified as multiple systems on the basis of emission line diagnostics and started a massive multiband observational campaign. Here we report on the discovery of the exceptionally high active galactic nuclei (AGN) density compact group SDSS (Sloan Digital Sky Survey) J0959+1259. A multiband study suggests that strong interactions are taking place among its galaxies through tidal forces, and therefore this system represents a case study for physical mechanisms that trigger nuclear activity and star formation. We also present a preliminary analysis of the multiple AGN system SDSS J1038+3921.
Unveiling multiple AGN activity in galaxy mergers / De Rosa, A; Bianchi, S.; Bogdanović, T.; Decarli, R.; Heidt, J.; Herrero-Illana, R.; Husemann, B.; Komossa, S.; Kun, E.; Loiseau, N.; Guainazzi, M.; Paragi, Z.; Perez-Torres, M.; Piconcelli, E.; Schawinski, K.; Vignali, C.. - In: ASTRONOMISCHE NACHRICHTEN. - ISSN 0004-6337. - STAMPA. - 338:2-3(2017), pp. 262-268. [10.1002/asna.201713340]
Unveiling multiple AGN activity in galaxy mergers
VIGNALI, CRISTIAN
2017
Abstract
In this paper we present an overview of the MAGNA (Multiple AGN Activity) project aiming at a comprehensive study of multiple super-massive black hole systems. With the main goal of characterizing the sources in merging systems at different stages of evolution, we selected a sample of objects optically classified as multiple systems on the basis of emission line diagnostics and started a massive multiband observational campaign. Here we report on the discovery of the exceptionally high active galactic nuclei (AGN) density compact group SDSS (Sloan Digital Sky Survey) J0959+1259. A multiband study suggests that strong interactions are taking place among its galaxies through tidal forces, and therefore this system represents a case study for physical mechanisms that trigger nuclear activity and star formation. We also present a preliminary analysis of the multiple AGN system SDSS J1038+3921.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
