J/ApJ/960/15ivo://CDS.VizieR/J/ApJ/960/15CDSKawamuro T.Ricci C.Yamada S.Noda H.Li R.Temple M.J.Tortosa A.2026-03-09T08:10:18Z2026-03-09T09:01:02ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.fractive-galactic-nucleispectral-energy-distributionx-ray-sourcesinfrared-photometryblack-holesvisible-astronomyultraviolet-astronomyThe nearby dwarf galaxy POX 52 at z=0.021 hosts an active galactic nucleus (AGN) with a black hole (BH) mass of M_BH_~10^5-6^M_{sun}_ and an Eddington ratio of ~0.1-1. This object provides the rare opportunity to study both AGN and host-galaxy properties in a low-mass highly accreting system. To do so, we collected its multiwavelength data from X-ray to radio. First, we construct a spectral energy distribution, and by fitting it with AGN and host-galaxy components, we constrain AGN-disk and dust-torus components. Then, while considering the AGN-disk emission, we decompose optical Hubble Space Telescope images. As a result, it is found that a classical bulge component is probably present, and its mass (M_bulge_) is consistent with an expected value from a local relation. Lastly, we analyze new quasi-simultaneous X-ray (0.2-30keV) data obtained by the Nuclear Spectroscopic Telescope Array and XMM-Newton. The X-ray spectrum can be reproduced by multicolor blackbody, warm and hot coronae, and disk and torus reflection components. Based on this, the spin is estimated to be a_spin_=0.998-0.814, which could suggest that most of the current BH mass was achieved by prolonged mass accretion. Given the presence of the bulge, POX 52 would have undergone a galaxy merger, while the M_BH_-M_bulge_ relation and the inferred prolonged accretion could suggest that AGN feedback occurred. Regarding the AGN structure, the spectral slope of the hot corona, its relative strength to the bolometric emission, and the torus structure are found to be consistent with Eddington-ratio dependencies found for nearby AGNs.2024ApJ...960...15Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/960/15CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/xmm : XMM-Newton Observation Log (XMM-Newton Science Operation Center, 2012-)B/hst : HST Archived Exposures Catalog (STScI, 2007)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)VIII/76 : Leiden/Argentine/Bonn (LAB) Survey of Galactic HI (Kalberla+ 2005)II/311 : WISE All-Sky Data Release (Cutri+ 2012)II/328 : AllWISE Data Release (Cutri+ 2013)II/335 : Revised cat. of GALEX UV sources (GUVcat_AIS GR6+7) (Bianchi+ 2017)II/389 : The Pan-STARRS release 1 (PS1) Survey - DR2 (Magnier+, 2025)J/ApJ/670/92 : New sample of low-mass black holes in AGN (Greene+, 2007)J/ApJS/177/148 : HST survey of 3CR counterparts. II. (Floyd+, 2008)J/A+A/495/421 : Cat. of AGN in XMM-Newton archive (CAIXA) (Bianchi+, 2009)J/ApJS/206/4 : SED & bolometric corr. for luminous QSOs (Krawczyk+, 2013)J/ApJS/210/3 : SDSS bulge, disk and total stellar masses (Mendel+, 2014)J/MNRAS/454/766 : Mid-infrared-X-ray correlation for local AGNs (Asmus+, 2015)J/MNRAS/446/3943 : galaxies 2D phot. decompositions in SDSS-DR7 (Meert+, 2015)J/A+A/588/A70 : Hard X-ray view of the soft excess in AGN (Boissay+, 2016)J/ApJ/835/74 : IR phot. of AGNs in Swift/BAT 70-month (Ichikawa+, 2017)J/A+A/602/A28 : IR signature of CMBH in nearby dwarf gal. (Marleau+, 2017)J/ApJS/233/17 : Swift/BAT AGN spectroscopic survey. V. X-ray (Ricci+, 2017)J/ApJ/836/185 : SEDs of radio continuum from KINGFISHER (Tabatabaei+, 2017)J/ApJ/896/10 : NSA low-mass gal. with PTF obs. (Baldassare+, 2020)J/A+A/654/A93 : Polar dust obscuration in broad-line AGN (Buat+, 2021)J/ApJS/255/30 : VLASS QL Ep.1 Catalog, CIRADA version (Gordon+, 2021)J/ApJ/912/91 : A value-added cat. for SDSS DR16 QSOs at z<0.7 (Toba+, 2021)J/ApJS/262/54 : The CGS. X. Stellar mass parameters for bulges (Gao+, 2022)J/ApJS/261/8 : BASS. XXIX. NIR view of broad-line regions (Ricci+, 2022)J/ApJS/259/37 : IDEOS. II. The 5.4-36{mu}m range (Spoon+, 2022)J/ApJS/265/37 : Multiwavelength SED analysis of GOALS ULIRGs (Yamada+, 2023)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/960/15https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/960/15http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/960/15https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/960/15https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/960/15http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/960/15GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapX-rayUVOpticalInfrareddefaultJ/ApJ/960/15/table4Data of the AGN SED and spectral componentsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreq[4.43e+11/1.71e+21] FrequencyHzem.freqdoubleTLum[1e+35/8.9e+42] Total luminosity (1)1e-07Wphys.luminositydoubleADLum[1.29e+35/8.69e+42]? Accretion disk luminosity (1)1e-07Wphys.luminositydoublenullableIRLum[1.47e+35/6.38e+40]? IR torus luminosity (1)1e-07Wphys.luminosity;em.IRdoublenullableXPLLum[1e+35/3.15e+41]? X-ray power-law luminosity (1)1e-07Wphys.luminosity;em.X-raydoublenullableXDRLum[1.96e+38/8.87e+41]? X-ray disk reflection luminosity (1)1e-07Wphys.luminosity;em.X-raydoublenullableXTLum[4.21e+35/1.5e+41]? X-ray torus luminosity (1)1e-07Wphys.luminosity;em.X-raydoublenullable