Host Galaxies of Hard X-ray Selected Type-2 Active Galactic Nuclei at Intermediate Redshifts

Abstract

We study properties of the host galaxies of 15 hard X-ray selected type-2 active galactic nuclei (AGNs) at intermediate redshifts (0.05$<z<$0.6) detected in $ASCA$ surveys. The absorption corrected hard X-ray luminosities $L_{2-10keV}$ range from 10${}^{42}$ erg s${}^{-1}$ to $10^{45}$ erg s${}^{-1}$. We took the $R$-band image of these AGNs with the University of Hawaii 2.2 m telescope. Thanks to the intrinsic obscuration of nuclear light, we can decompose the galaxies with a spheroid component and a disk component. The resulting spheroid luminosities correlate with $L_{2-10keV}$; higher (lower) X-ray luminosity AGNs tend to reside in luminous (less luminous) spheroids. It is also found that the hosts of luminous AGNs show a large spheroid-to-disk luminosity ratio ($\sim$1), while those of less luminous AGNs spread between 0 and 1. The correlation between $L_{2-10keV}$ and spheroid luminosity indicates that the relation between mass of a supermassive black hole (SMBH) and spheroid luminosity (BS-relation) at the intermediate redshifts. The BS-relation agrees with that in the local universe if the Eddington ratio of 0.24 is adopted, which is a mean value determined from our $ASCA$ type-1 AGN sample at similar redshifts through the broad-line width and continuum luminosity. The present study demonstrates the effectiveness of using type-2 AGNs at high redshifts to study their host properties.

arXiv comment21 pages, 8 figures, ApJ accepted

References in corpus (25)

• A Fundamental Relation Between Supermassive Black Holes and Their Host Galaxies
• The Demography of Massive Dark Objects in Galaxy Centres
• Detailed Structural Decomposition of Galaxy Images
• Reverberation Measurements for 17 Quasars and the Size-Mass-Luminosity Relations in Active Galactic Nuclei
• The Relation between Black Hole Mass, Bulge Mass, and Near-Infrared Luminosity
• Local Supermassive Black Holes, Relics of Active Galactic Nuclei and the X-ray Background
• Cosmological Evolution of the Hard X-ray AGN Luminosity Function and the Origin of the Hard X-ray Background
• Luminosity-dependent evolution of soft X-ray selected AGN: New Chandra and XMM-Newton surveys
• On the black hole - bulge mass relation in active and inactive galaxies
• Quasars, their host galaxies, and their central black holes
• Black Hole Mass Estimates from Reverberation Mapping and from Spatially Resolved Kinematics
• The HELLAS2XMM survey. VII. The hard X-ray luminosity function of AGN up to z=4: more absorbed AGN at low luminosities and high redshifts
• Super-massive Black Hole Demography: the Match between the Local and Accreted Mass Functions
• Black Hole Demographics from the M(BH)-sigma Relation
• The Black Hole-Bulge Relationship in QSOs
• The Relationship Between Stellar and Black-Hole Mass in Submillimeter Galaxies
• Colors of AGN host galaxies at 0.5<z<1.1 from GEMS
• Probing the Coevolution of Supermassive Black Holes and Quasar Host Galaxies
• Optical Identification of the ASCA Large Sky Survey
• Quasar host galaxy star formation activity from multicolour data
• The ASCA Medium Sensitivity Survey (the GIS Catalog Project): Source Counts and Evidence for Emerging Population of Hard Sources
• Optical Identification of the ASCA Medium Sensitivity Survey in the Northern Sky: Nature of Hard X-ray-selected Luminous Active Galactic Nuclei
• Supermassive Black Hole Mass Functions at Intermediate Redshifts from Spheroid and AGN Luminosity Functions
• Host Galaxies of the High-redshift AGNs in the GOODS Fields
• Near-Infrared Colors of Hard X-ray Selected Active Galactic Nuclei

Cited by in corpus (4)

• A New Sample of Buried Active Galactic Nuclei Selected from the Second XMM-Newton Serendipitous Source Catalogue
• Accretion Properties of A Sample of Hard X-ray (<60keV) Selected Seyfert 1 Galaxies
• Physical Properties, Star Formation, and Active Galactic Nucleus Activity in Balmer Break Galaxies at 0 < z < 1
• First Detection of 12CO (1--0) Emission from Two Narrow-Line Seyfert 1 Galaxies