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arXiv · 2301.09275

ALMA Lensing Cluster Survey: Properties of Millimeter Galaxies Hosting X-ray Detected Active Galactic Nuclei

Ryosuke Uematsu·Yoshihiro Ueda·Kotaro Kohno·Satoshi Yamada·Yoshiki Toba·Seiji Fujimoto·Bunyo Hatsukade·Hideki Umehata·Daniel Espada·Fengwu Sun·Georgios E. Magdis·Vasily Kokorev·Yiping Ao
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Abstract

We report the multi-wavelength 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 ${\sim}$60 $\mathrm{μJy}$ ($1σ$). 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_{\mathrm{H}}/\mathrm{cm}^{-2} < 23$), while the other shows signs of moderate absorption ($\log N_{\mathrm{H}}/\mathrm{cm}^{-2}\sim 23.5$). We also perform spectral energy distribution (SED) modelling 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 ${\sim}10^{\text{44--45}}\,\mathrm{erg\ s^{-1}}$) and star-formation rates (${\gtrsim}100\,M_{\odot}\,\mathrm{yr}^{-1}$). This demonstrates that a wide-area survey with ALMA and Chandra can selectively detect intense growth of both galaxies and supermassive black holes (SMBHs) in the high-redshift universe.

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Ryosuke Uematsu, Yoshihiro Ueda, Kotaro Kohno, Satoshi Yamada, Yoshiki Toba, Seiji Fujimoto, Bunyo Hatsukade, Hideki Umehata, Daniel Espada, Fengwu Sun, Georgios E. Magdis, Vasily Kokorev, Yiping Ao. 2023-01-23. ALMA Lensing Cluster Survey: Properties of Millimeter Galaxies Hosting X-ray Detected Active Galactic Nuclei. https://doi.org/10.3847/1538-4357%2Facb4e9

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