A variable active galactic nucleus at z = 2.06 triply-imaged by the galaxy cluster MACS J0035.4−2015
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A variable active galactic nucleus at z = 2.06 triply-imaged by the galaxy cluster MACS J0035.4−2015. / Furtak, Lukas J.; Mainali, Ramesh; Zitrin, Adi; Plat, Adèle; Fujimoto, Seiji; Donahue, Megan; Nelson, Erica J.; Bauer, Franz E.; Uematsu, Ryosuke; Caminha, Gabriel B.; Andrade-Santos, Felipe; Bradley, Larry D.; Caputi, Karina I.; Charlot, Stéphane; Chevallard, Jacopo; Coe, Dan; Curtis-Lake, Emma; Espada, Daniel; Frye, Brenda L.; Knudsen, Kirsten K.; Koekemoer, Anton M.; Kohno, Kotaro; Kokorev, Vasily; Laporte, Nicolas; Lee, Minju M.; Lemaux, Brian C.; Magdis, Georgios E.; Sharon, Keren; Stark, Daniel P.; Su, Yuanyuan; Suess, Katherine A.; Ueda, Yoshihiro; Umehata, Hideki; Vidal-García, Alba; Wu, John F.
In: Monthly Notices of the Royal Astronomical Society, Vol. 522, No. 4, 01.07.2023, p. 5142-5151.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - A variable active galactic nucleus at z = 2.06 triply-imaged by the galaxy cluster MACS J0035.4−2015
AU - Furtak, Lukas J.
AU - Mainali, Ramesh
AU - Zitrin, Adi
AU - Plat, Adèle
AU - Fujimoto, Seiji
AU - Donahue, Megan
AU - Nelson, Erica J.
AU - Bauer, Franz E.
AU - Uematsu, Ryosuke
AU - Caminha, Gabriel B.
AU - Andrade-Santos, Felipe
AU - Bradley, Larry D.
AU - Caputi, Karina I.
AU - Charlot, Stéphane
AU - Chevallard, Jacopo
AU - Coe, Dan
AU - Curtis-Lake, Emma
AU - Espada, Daniel
AU - Frye, Brenda L.
AU - Knudsen, Kirsten K.
AU - Koekemoer, Anton M.
AU - Kohno, Kotaro
AU - Kokorev, Vasily
AU - Laporte, Nicolas
AU - Lee, Minju M.
AU - Lemaux, Brian C.
AU - Magdis, Georgios E.
AU - Sharon, Keren
AU - Stark, Daniel P.
AU - Su, Yuanyuan
AU - Suess, Katherine A.
AU - Ueda, Yoshihiro
AU - Umehata, Hideki
AU - Vidal-García, Alba
AU - Wu, John F.
N1 - Publisher Copyright: © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
PY - 2023/7/1
Y1 - 2023/7/1
N2 - 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.
AB - 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.
KW - cosmology: observations
KW - galaxies: clusters: individual: MACS J0035.4-2015
KW - galaxies: nuclei
KW - galaxies: Seyfert
KW - gravitational lensing: strong
KW - quasars
U2 - 10.1093/mnras/stad1321
DO - 10.1093/mnras/stad1321
M3 - Journal article
AN - SCOPUS:85161492712
VL - 522
SP - 5142
EP - 5151
JO - Royal Astronomical Society. Monthly Notices
JF - Royal Astronomical Society. Monthly Notices
SN - 0035-8711
IS - 4
ER -
ID: 360969809