GMP-selected dual and lensed AGNs: selection function and classification based on near-IR colors and resolved spectra from VLT/ERIS, KECK/OSIRIS, and LBT/LUCI
ePrints Soton (University of Southampton)
Abstract
The Gaia-Multi-Peak (GMP) technique can be used to identify large numbers of dual or lensed AGN candidates at sub-arcsec separation, allowing us to study both multiple SMBHs in the same galaxy and rare, compact lensed systems. The observed samples can be used to test the predictions of the models of SMBH merging once 1) the selection function of the GMP technique is known, and 2) each system has been classified as dual AGN, lensed AGN, or AGN/star alignment. Here we show that the GMP selection is very efficient for separations above 0.15'' when the secondary (fainter) object has magnitude G<20.5. We present the spectroscopic classification of five GMP candidates using VLT/ERIS and Keck/OSIRIS, and compare them with the classifications obtained from: a) the near-IR colors of 7 systems obtained with LBT/LUCI, and b) the analysis of the total, spatially-unresolved spectra. We conclude that colors and integrated spectra can already provide reliable classifications of many systems. Finally, we summarize the confirmed dual AGNs at z>0.5 selected by the GMP technique, and compare this sample with other such systems from the literature, concluding that GMP can provide a large number of confirmed dual AGNs at separations below 7 kpc.
Authors 46
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Arcetri Astrophysical Observatory · National Institute for Astrophysics
Affiliation as printed
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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Arcetri Astrophysical Observatory · University of Florence · National Institute for Astrophysics
Affiliation as printed
Dipartimento di Fisica e Astronomia , Università di Firenze , Via G. Sansone 1 , 50019 , Sesto Fiorentino (Firenze) , Italy
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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University of California, Los Angeles
Affiliation as printed
Department of Physics and Astronomy , University of California Los Angeles , 430 Portola Plaza , Los Angeles , CA 90095 , USA
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Affiliation as printed
W. M Keck Observatory , 65-1120 Mamalahoa Highway , Kamuela , HI 96743 , USA
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Arcetri Astrophysical Observatory · University of Florence · National Institute for Astrophysics
Affiliation as printed
Dipartimento di Fisica e Astronomia , Università di Firenze , Via G. Sansone 1 , 50019 , Sesto Fiorentino (Firenze) , Italy
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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Arcetri Astrophysical Observatory · University of Florence · National Institute for Astrophysics
Affiliation as printed
Dipartimento di Fisica e Astronomia , Università di Firenze , Via G. Sansone 1 , 50019 , Sesto Fiorentino (Firenze) , Italy
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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Arcetri Astrophysical Observatory · National Institute for Astrophysics
Affiliation as printed
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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Arcetri Astrophysical Observatory · University of Florence · National Institute for Astrophysics
Affiliation as printed
Dipartimento di Fisica e Astronomia , Università di Firenze , Via G. Sansone 1 , 50019 , Sesto Fiorentino (Firenze) , Italy
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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University of Florence · University of Arkansas at Fayetteville
Affiliation as printed
Department of Physics , University of Arkansas , 226 Physics Building , 825 West Dickson Street , Fayetteville , AR 72701 , USA
Dipartimento di Fisica e Astronomia , Università di Firenze , Via G. Sansone 1 , 50019 , Sesto Fiorentino (Firenze) , Italy
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Arcetri Astrophysical Observatory · National Institute for Astrophysics
Affiliation as printed
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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Affiliation as printed
Scuola Normale Superiore , Piazza dei Cavalieri 7 , 56126 , Pisa , Italy
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Affiliation as printed
Institute of Theoretical Astrophysics , University of Oslo , P.O Box 1029 , Blindern , 0315 Oslo , Norway
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Arcetri Astrophysical Observatory · National Institute for Astrophysics
Affiliation as printed
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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Arcetri Astrophysical Observatory · National Institute for Astrophysics
Affiliation as printed
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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Affiliation as printed
Institute of Theoretical Astrophysics , University of Oslo , P.O Box 1029 , Blindern , 0315 Oslo , Norway
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Brera Astronomical Observatory
Affiliation as printed
INAF -Osservatorio Astronomico di Brera , Via Brera 28 , 20121 Milano , Italy
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Arcetri Astrophysical Observatory · University of Florence · National Institute for Astrophysics
Affiliation as printed
Dipartimento di Fisica e Astronomia , Università di Firenze , Via G. Sansone 1 , 50019 , Sesto Fiorentino (Firenze) , Italy
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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Scuola Normale Superiore · Arcetri Astrophysical Observatory · National Institute for Astrophysics
Affiliation as printed
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
Scuola Normale Superiore , Piazza dei Cavalieri 7 , 56126 , Pisa , Italy
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Affiliation as printed
Physics and Astronomy Department "Augusto Righi" , Università di Bologna , Via Gobetti 93/2 , 40129 Bologna , Italy
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Institut d'Astrophysique de Paris
Affiliation as printed
Institu d' Astrophysique de Paris , 98bis Bd Arago , 75014 Paris , France
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Arcetri Astrophysical Observatory · National Institute for Astrophysics
Affiliation as printed
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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Arcetri Astrophysical Observatory · National Institute for Astrophysics
Affiliation as printed
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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Arcetri Astrophysical Observatory · National Institute for Astrophysics
Affiliation as printed
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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Arcetri Astrophysical Observatory · National Institute for Astrophysics
Affiliation as printed
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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Arcetri Astrophysical Observatory · National Institute for Astrophysics
Affiliation as printed
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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Arcetri Astrophysical Observatory · National Institute for Astrophysics
Affiliation as printed
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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Arcetri Astrophysical Observatory · National Institute for Astrophysics
Affiliation as printed
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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Arcetri Astrophysical Observatory · National Institute for Astrophysics
Affiliation as printed
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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Arcetri Astrophysical Observatory · National Institute for Astrophysics
Affiliation as printed
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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Affiliation as printed
Large Binocular Telescope Observatory , Tucson , Arizona , USA
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Affiliation as printed
Large Binocular Telescope Observatory , Tucson , Arizona , USA
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Affiliation as printed
Large Binocular Telescope Observatory , Tucson , Arizona , USA
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Affiliation as printed
Large Binocular Telescope Observatory , Tucson , Arizona , USA
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Max Planck Institute for Extraterrestrial Physics
Affiliation as printed
Max-Planck-Institut f ur extraterrestrische Physik , Postfach 1312 , 85741 , Garching , Germany
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Arcetri Astrophysical Observatory · National Institute for Astrophysics
Affiliation as printed
INAF -Osservatorio Astrofisico di Arcetri , largo E. Fermi 5 , 50125 Firenze , Italy
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Royal Observatory · UK Astronomy Technology Centre
Affiliation as printed
STFC UK ATC , Royal Observatory Edinburgh , Blackford Hill. Edinburgh , EH9 3HJ , UK
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Royal Observatory · UK Astronomy Technology Centre
Affiliation as printed
STFC UK ATC , Royal Observatory Edinburgh , Blackford Hill. Edinburgh , EH9 3HJ , UK
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Collurania Teramo Observatory · National Institute for Astrophysics
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INAF -Osservatorio Astronomico d'Abruzzo , Via Mentore Maggini , 64100 , Teramo , Italy
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Osservatorio Astronomico di Padova
Affiliation as printed
INAF -Osservatorio Astronomico di Padova , Vicolo dell'Osservatorio 5 , 35122 , Padova , Italy
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Max Planck Institute for Extraterrestrial Physics
Affiliation as printed
Max-Planck-Institut f ur extraterrestrische Physik , Postfach 1312 , 85741 , Garching , Germany
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Max Planck Institute for Extraterrestrial Physics
Affiliation as printed
Max-Planck-Institut f ur extraterrestrische Physik , Postfach 1312 , 85741 , Garching , Germany
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Max Planck Institute for Extraterrestrial Physics
Affiliation as printed
Max-Planck-Institut f ur extraterrestrische Physik , Postfach 1312 , 85741 , Garching , Germany
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Max Planck Institute for Extraterrestrial Physics
Affiliation as printed
Max-Planck-Institut f ur extraterrestrische Physik , Postfach 1312 , 85741 , Garching , Germany
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Max Planck Institute for Extraterrestrial Physics
Affiliation as printed
Max-Planck-Institut f ur extraterrestrische Physik , Postfach 1312 , 85741 , Garching , Germany
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University of Cologne · Max Planck Institute for Extraterrestrial Physics
Affiliation as printed
I. Physikalisches Institut , Universität zu Köln , Zülpicher Str. 77 , 50937 , Köln , Germany
Max-Planck-Institut f ur extraterrestrische Physik , Postfach 1312 , 85741 , Garching , Germany
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Affiliation as printed
Leiden Observatory , University of Leiden , P.O. Box 9513 , 2300 RA Leiden , The Netherlands
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