ALMA Lensing Cluster Survey: Properties of Millimeter Galaxies Hosting X-Ray- detected Active Galactic Nuclei

We thank the anonymous referee for providing useful comments that improved the quality of the paper. We thank Ian Smail for very helpful discussions. This publication uses data from the ALMA programs: ADS/JAO.ALMA# 2018.1.00035.L, #2013.1.00999.S, and #2015.1.01425.S. ALMA is a partnership of ESO (representing its member states), NSF (USA) and NINS (Japan), together with NRC (Canada), MOST and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO, and NAOJ. This work has been financially supported by JSPS KAKENHI grant Nos. 22J22795 (R.U.), 20H01946 (Y.U.), 17H06130 (K.K., Y.U.), 19K14759 (Y.T.), and 22H01266 (Y. T.), and the NAOJ ALMA Scientific Research grant No. 2017- 06B (K.K.). S.Y. is grateful for support from RIKEN Special Postdoctoral Researcher Program. F.S. acknowledges support from the NRAO Student Observing Support (SOS) award SOSPA7-022. G.E.M. acknowledges the Villum Fonden research grants 13160 and 37440 and the Cosmic Dawn Center of Excellence funded by the Danish National Research Foundation under grant No. 140. H.U. acknowledges support from JSPS KAKENHI under grant No. 20H01953. D.E. acknowledges support from a Beatriz Galindo senior fellowship (BG20/00224) from the Spanish Ministry of Science and Innovation, projects PID2020-114414GB-100 and PID2020-113689GB-I00 financed by MCIN/AEI/ 10.13039/501100011033, project P20_00334 financed by the Junta de Andalucía, and project A-FQM-510-UGR20 of the FEDER/Junta de Andalucía-Consejería de Transformación Económica, Industria, Conocimiento y Universidades
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.
Ministry 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