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  • Furtak, Lukas J.Ben-Gurion University of the Negev (author)

A variable active galactic nucleus at z = 2.06 triply-imaged by the galaxy cluster MACS J0035.4−2015

  • Article/chapterEnglish2023

Publisher, publication year, extent ...

  • 2023
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:d47be3df-5af1-4fe0-9039-35f5c5e5ffa5
  • https://doi.org/10.1093/mnras/stad1321DOI
  • https://research.chalmers.se/publication/536255URI

Supplementary language notes

  • Language:English
  • Summary in:English

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Classification

  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • We report the discovery of a triply imaged active galactic nucleus (AGN), lensed by the galaxy cluster MACS J0035.4−2015 (z d = 0.352). The object is detected in Hubble Space Telescope imaging taken for the RELICS program. It appears to have a quasi-stellar nucleus consistent with a point-source, with a de-magnified radius of re ≲ 100 pc. The object is spectroscopically confirmed to be an AGN at z spec = 2.063 ± 0.005 showing broad rest-frame UV emission lines, and detected in both X-ray observations with Chandra and in ALCS ALMA band 6 (1.2 mm) imaging. It has a relatively faint rest-frame UV luminosity for a quasar-like object, MUV, 1450 = −19.7 ± 0.2. The object adds to just a few quasars or other X-ray sources known to be multiply lensed by a galaxy cluster. Some diffuse emission from the host galaxy is faintly seen around the nucleus, and there is a faint object nearby sharing the same multiple-imaging symmetry and geometric redshift, possibly an interacting galaxy or a star-forming knot in the host. We present an accompanying lens model, calculate the magnifications and time delays, and infer the physical properties of the source. We find the rest-frame UV continuum and emission lines to be dominated by the AGN, and the optical emission to be dominated by the host galaxy of modest stellar mass M✶ ≃ 109.2 M⊙. We also observe some variation in the AGN emission with time, which may suggest that the AGN used to be more active. This object adds a low-redshift counterpart to several relatively faint AGN recently uncovered at high redshifts with HST and JWST.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Mainali, RameshNASA Goddard Space Flight Center,University of Arizona,Catholic University of America (author)
  • Zitrin, A.Ben-Gurion University of the Negev (author)
  • Plat, AdèleUniversity of Arizona (author)
  • Fujimoto, S.The University of Texas at Austin, USA (author)
  • Donahue, MeganMichigan State University (author)
  • Nelson, Erica J.University of Colorado at Boulder (author)
  • Bauer, F. E.Pontificia Universidad Catolica de Chile,Instituto Milenio de Astrofísica,Millennium Institute of Astrophysics (author)
  • Uematsu, RyosukeKyoto University (author)
  • Caminha, G. B.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Andrade-Santos, F.Harvard-Smithsonian Center for Astrophysics,Berklee College of Music (author)
  • Bradley, L.Space Telescope Science Institute (STScI) (author)
  • Caputi, Karina I.Rijksuniversiteit Groningen,University of Groningen (author)
  • Charlot, StephaneInstitut d 'Astrophysique de Paris (author)
  • Chevallard, JacopoUniversity Of Oxford (author)
  • Coe, DanSpace Telescope Science Institute (STScI),Johns Hopkins University (author)
  • Curtis-Lake, EmmaUniversity of Hertfordshire (author)
  • Espada, D.Universidad de Granada (author)
  • Frye, B.University of Arizona (author)
  • Knudsen, Kirsten,1976Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)kraiberg (author)
  • Koekemoer, Anton M.Space Telescope Science Institute (STScI) (author)
  • Kohno, K.University of Tokyo, Japan (author)
  • Kokorev, V.Rijksuniversiteit Groningen,University of Groningen (author)
  • Laporte, N.University Of Cambridge (author)
  • Lee, M. M.Danmarks Tekniske Universitet,Technical University of Denmark (author)
  • Lemaux, Brian C.Gemini Observatory North,University of California (author)
  • Magdis, Georgios E.Niels Bohr Institute,Danmarks Tekniske Universitet,Technical University of Denmark (author)
  • Sharon, KerenUniversity of Michigan (author)
  • Stark, Daniel P.University of Arizona (author)
  • Su, YuanyuanUniversity of Kentucky (author)
  • Suess, Katherine A.University of California (author)
  • Ueda, YoshihiroKyoto University (author)
  • Umehata, H.Nagoya University (author)
  • Vidal-García, AlbaObservatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN) (author)
  • Wu, John F.Space Telescope Science Institute (STScI),Johns Hopkins University (author)
  • Ben-Gurion University of the NegevNASA Goddard Space Flight Center (creator_code:org_t)

Related titles

  • In:Monthly Notices of the Royal Astronomical Society522:4, s. 5142-51510035-87111365-2966

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