ALMA Lensing Cluster Survey: Properties of Millimeter Galaxies Hosting X-Ray- detected Active Galactic Nuclei
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American Astronomical Society
Active galactic nucleiX-ray active galactic nucleiQuasarsSubmillimeter astronomyGalaxy evolutionHigh-redshift galaxiesSpectral energy distribution
Uematsu et al. ALMA Lensing Cluster Survey: Properties of Millimeter Galaxies Hosting X-Ray- detected Active Galactic Nuclei. The Astrophysical Journal, 945:121 (9pp), 2023 March 10. [https://doi.org/10.3847/1538-4357/acb4e9]
SponsorshipMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT) Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research (KAKENHI) A-FQM-510-UGR20; NAOJ ALMA Scientific Research 22J22795; RIKEN Special Postdoctoral Researcher Program; NRAO Student Observing Support (SOS) 20H01946; Villum Fonden 17H06130 19K14759; Cosmic Dawn Center of Excellence - Danish National Research Foundation 22H01266; Ministry of Science and Innovation, Spain (MICINN) Spanish Government; Junta de Andalucia; FEDER/Junta de Andalucia-Consejeria de Transformacion Economica, Industria, Conocimiento y Universidades; MCIN/AEI 2017-06B, SOSPA7-022, 13160, 37440, 140, 20H01953, BG20/00224, PID2020-114414GB-100, PID2020-113689GB-I00, P20_00334
We report the multiwavelength properties of millimeter galaxies hosting X-ray detected active galactic nuclei (AGNs) from the ALMA Lensing Cluster Survey (ALCS). ALCS is an extensive survey of well-studied lensing clusters with ALMA, covering an area of 133 arcmin(2) over 33 clusters with a 1.2 mm flux-density limit of similar to 60 mu Jy (1 sigma). Utilizing the archival data of Chandra, we identify three AGNs at z = 1.06, 2.09, and 2.84 among the 180 millimeter sources securely detected in the ALCS (of which 155 are inside the coverage of Chandra). The X-ray spectral analysis shows that two AGNs are not significantly absorbed (log N-H cm (2) < 23 -), while the other shows signs of moderate absorption (log NH cm (2) similar to 23.5 -). We also perform spectral energy distribution modeling of X-ray to millimeter photometry. We find that our X-ray AGN sample shows both high mass-accretion rates (intrinsic 0.5-8 keV X-ray luminosities of similar to 10(44-45) erg s(-1)) and star formation rates (> 100 Me yr-1). This demonstrates that a wide-area survey with ALMA and Chandra can selectively detect intense growth of both galaxies and supermassive black holes in the high-redshift universe.