HSC-XD 52: An X-ray detected AGN in a low-mass galaxy at $z\sim 0.56$

Abstract

The properties of low-mass galaxies hosting central black holes provide clues about the formation and evolution of the progenitors of supermassive black holes. In this letter, we present HSC-XD 52, a spectroscopically confirmed low-mass active galactic nucleus (AGN) at an intermediate redshift of $z\sim 0.56$. We detect this object as a very luminous X-ray source coincident with a galaxy observed by the Hyper Suprime-Cam (HSC) as part of a broader search for low-mass AGN. We constrain its stellar mass through spectral energy distribution modeling to be LMC-like at $M_{\star }\approx 3\times 10^9{M}_{\odot }$, placing it in the dwarf regime. We estimate a central black hole mass of $M_{\mathrm{BH}}\sim 10^6{M}_{\odot }$. With an average X-ray luminosity of $L_X\approx 3.5\times 10^{43}\mathrm{erg}{\mathrm{s}}^{-1}$, HSC-XD 52 is among the most luminous X-ray selected AGN in dwarf galaxies. The spectroscopic and photometric properties of HSC-XD 52 indicate that it is an intermediate redshift counterpart to local low-mass AGN.

arXiv commentaccepted to ApJL; 8 pages, 4 figures, 1 table

References in corpus (47)

• Astropy: A Community Python Package for Astronomy
• Stellar population synthesis at the resolution of 2003
• Galactic Stellar and Substellar Initial Mass Function
• Coevolution (Or Not) of Supermassive Black Holes and Host Galaxies
• Binary companions of evolved stars in APOGEE DR14: Search method and catalog of ~5,000 companions
• The Herschel-SPIRE instrument and its in-flight performance
• The Host Galaxies and Classification of Active Galactic Nuclei
• Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe
• CIGALE: a python Code Investigating GALaxy Emission
• A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies
• The Hyper Suprime-Cam SSP Survey: Overview and Survey Design
• Analysis of galaxy SEDs from far-UV to far-IR with CIGALE: Studying a SINGS test sample
• Relations Between Central Black Hole Mass and Total Galaxy Stellar Mass in the Local Universe
• Estimating Black Hole Masses in Active Galaxies Using the Halpha Emission Line
• First Data Release of the Hyper Suprime-Cam Subaru Strategic Program
• Dwarf Galaxies with Optical Signatures of Active Massive Black Holes
• Revisiting the Infrared Spectra of Active Galactic Nuclei with a New Torus Emission Model
• A Two-Parameter Model for the Infrared/Submillimeter/Radio Spectral Energy Distributions of Galaxies and AGN
• A New Sample of Low-mass Black Holes in Active Galaxies
• A Low-Mass Central Black Hole in the Bulgeless Seyfert 1 Galaxy NGC 4395
• The VISTA Deep Extragalactic Observations (VIDEO) Survey
• Cosmic X-ray Surveys of Distant Active Galaxies: The Demographics, Physics, and Ecology of Growing Supermassive Black Holes
• A Chandra Perspective On Galaxy-Wide X-ray Binary Emission And Its Correlation With Star Formation Rate And Stellar Mass: New Results From Luminous Infrared Galaxies
• Emission-line Diagnostics of Low Metallicity AGN
• POX 52: A Dwarf Seyfert 1 Galaxy With An Intermediate-Mass Black Hole
• The subarcsecond mid-infrared view of local active galactic nuclei: II. The mid-infrared--X-ray correlation
• Intermediate-mass black holes in dwarf galaxies out to redshift $\sim$ 2.4 in the Chandra COSMOS Legacy Survey
• Improved Dynamical Constraints on the Masses of the Central Black Holes in Nearby Low-mass Early-type Galactic Nuclei And the First Black Hole Determination for NGC 205
• Multimessenger Signatures of Massive Black Holes in Dwarf Galaxies
• X-ray constraints on the local supermassive black hole occupation fraction
• Black Holes at the Centers of Nearby Dwarf Galaxies
• The CFHT Large Area U-band Deep Survey (CLAUDS)
• A Uniformly Selected Sample of Low-mass Black Holes in Seyfert 1 Galaxies
• The First Massive Black Hole Seeds and Their Hosts
• The VIPERS Multi-Lambda Survey. II. Diving with massive galaxies in 22 square degrees since z = 1.5
• X-ray Detected Active Galactic Nuclei in Dwarf Galaxies at $0<z<1$
• An X-ray Selected Sample of Candidate Black Holes in Dwarf Galaxies
• The XMM-SERVS survey: new XMM-Newton point-source catalog for the XMM-LSS field
• A Candidate Massive Black Hole in the Low-metallicity Dwarf Galaxy Pair Mrk 709
• The Incidence of Active Galactic Nuclei in Pure Disk Galaxies: The Spitzer View
• Unveiling a population of galaxies harboring low-mass black holes with X-rays
• Chandra Survey of Nearby Galaxies: A Significant Population of Candidate Central Black Holes in Late-type Galaxies
• The Chandra View of NGC 4178: The Lowest Mass Black Hole in a Bulgeless Disk Galaxy?
• A Chandra view of NGC 3621: a bulgeless galaxy hosting an AGN in its early phase?
• Black Holes in Bulgeless Galaxies: An XMM-Newton Investigation of NGC 3367 and NGC 4536
• Discovery of an active supermassive black hole in the bulge-less galaxy NGC 4561
• Bulgeless Galaxies at Intermediate Redshift: Sample Selection, Colour Properties, and the Existence of Powerful AGN

Cited by in corpus (5)

• Third Data Release of the Hyper Suprime-Cam Subaru Strategic Program
• MaNGA AGN dwarf galaxies (MAD) -- I. A new sample of AGN in dwarf galaxies with spatially resolved spectroscopy
• Overmassive black holes in dwarf galaxies out to z$\sim$0.9 in the VIPERS survey
• Combining the CLAUDS & HSC-SSP surveys: U+grizy(+YJHKs) photometry and photometric redshifts for 18M galaxies in the 20 deg2 of the HSC-SSP Deep and ultraDeep fields
• Late-Time Evolution and Modeling of the Off-Axis Gamma-ray Burst Candidate FIRST J141918.9+394036