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Multiple AGN in the crowded field of the compact group SDSS J0959+1259

De Rosa, A. ; Bianchi, S. ; Bogdanović, T. ; Decarli, R. ; Herrero-Illana, R. ; Husemann, B. ; Komossa, S. ; Kun, E. ; Loiseau, N. ; Paragi, Z. ; Perez-Torres, M. ; Piconcelli, E. ; Schawinski, K. ; Vignali, C.

In: Monthly Notices of the Royal Astronomical Society, 2015, vol. 453, no. 1, p. 214-221

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    Titel
    • Multiple AGN in the crowded field of the compact group SDSS J0959+1259
    Autor
    • De Rosa, A.. INAF/Istituto di Astrofisica e Planetologie Spaziali. Via Fosso del Cavaliere, I- 00133 Roma, Italy
    • Bianchi, S.. Dipartimento di Matematica e Fisica, Università degli Studi Roma Tre, via della Vasca Navale 84, I-00146 Roma, Italy
    • Bogdanović, T.. Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, GA 30332, USA
    • Decarli, R.. Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany
    • Herrero-Illana, R.. Instituto de Astrofísica de Andalucía (IAA-CSIC), E-18008 Granada, Spain
    • Husemann, B.. European Southern Observatory Headquarters, Karl-Schwarzschild-St 2, D-85748 Garching, Germany
    • Komossa, S.. Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany
    • Kun, E.. Department of Experimental Physics, University of Szeged, Dóm tér 9, H-6720 Szeged, Hungary
    • Loiseau, N.. ESAC/XMM-Newton Science Operations Centre, Spain
    • Paragi, Z.. Joint Institute for VLBI ERIC, Postbus 2, NL-7900 AA Dwingeloo, The Netherlands
    • Perez-Torres, M.. Instituto de Astrofísica de Andalucía (IAA-CSIC), E-18008 Granada, Spain
    • Piconcelli, E.. Osservatorio Astronomico di Roma (INAF), via Frascati 33, I-00040 Monte Porzio Catone(Roma), Italy
    • Schawinski, K.. Institute for Astronomy, Department of Physics, ETH Zurich, Wolfgang-Pauli-Strasse 27, CH-8093 Zurich, Switzerland
    • Vignali, C.. Dipartimento di Fisica e Astronomia, Università degli studi di Bologna, Viale Berti Pichat 6/2, I-40127 Bologna, Italy
    Dokumententyp
    • Postprint
    Sprache
    • Englisch
    Veröffentlicht in
    • Monthly Notices of the Royal Astronomical Society, 2015, vol. 453, no. 1, p. 214-221. Oxford University Press
    Andere elektronische Ausgabe
    OAI-PMH-ID
    • oai:doc.rero.ch:303428
    Summary
    We present a multiwavelength study of a newly discovered compact group (CG), SDSS J0959+1259, based data from XMM-Newton, Sloan Digital Sky Survey (SDSS) and the Calar Alto optical imager BUSCA. With a maximum velocity offset of 500km s−1, a mean redshift of 0.035, and a mean spatial extension of 480kpc, this CG is exceptional in having the highest concentration of nuclear activity in the local Universe, established with a sensitivity limit LX > 4 × 1040ergs−1 in 2-10keV band and R-band magnitude MR < −19. The group is composed of two type-2 Seyferts, one type-1 Seyfert, two LINERs and three star-forming galaxies. Given the high X-ray luminosity of LINERs which reaches ∼1041ergs−1, it is likely that they are also accretion driven, bringing the number of active nuclei in this group to five out of eight (AGN fraction of 60 per cent). The distorted shape of one member of the CG suggests that strong interactions are taking place among its galaxies through tidal forces. Therefore, this system represents a case study for physical mechanisms that trigger nuclear activity and star formation in CGs