Results 101 to 110 of about 159,044 (227)
Physical properties of the CDFS X-ray sources through fitting spectral energy distributions [PDF]
, 2019 The physical parameters of galaxies and/or AGNs can be derived by fitting their multi-band spectral energy distributions (SEDs). By using CIGALE code, we perform multi-band SED fitting (from ultraviolet to infrared) for 791 X-ray sources (518 AGNs and 273 normal galaxies) in the 7 Ms Chandra Deep Field-south survey (CDFS). We consider the contributions
arxiv +1 more source
A Novel Method to Identify AGNs Based on Emission Line Excess and the Nature of Low-luminosity AGNs in the Sloan Digital Sky Survey: II - Nature of Low-luminosity AGNs [PDF]
, 2011 We develop a novel method to identify active galactic nuclei (AGNs) and study the nature of low-luminosity AGNs in the Sloan Digital Sky Survey. This is the second part of a series of papers and we study the correlations between the AGN activities and host galaxy properties. Based on a sample of AGNs identified with the new method developed in Paper-I,
arxiv +1 more source
The Astrophysical JournalThe outshining light from active galactic nuclei (AGNs) poses significant challenges in studying the properties of AGN host galaxies. To address this issue, we propose a novel approach that combines image decomposition and spectral energy distribution ...
Haoran Yu +6 more
doaj +1 more source
The host galaxy/AGN connection ⋆ . Brightness profiles of early-type galaxies hosting Seyfert nuclei. [PDF]
, 2007 A. Capetti, B. Balmaverde
openalex +2 more sources
Investigating the Star Formation Characteristics of Radio Active Galactic Nuclei
The Astrophysical JournalThe coevolution of supermassive black holes and their host galaxies represents a fundamental question in astrophysics. One approach to investigating this question involves comparing the star formation rates (SFRs) of active galactic nuclei (AGNs) with ...
Bojun Zhang +7 more
doaj +1 more source
The Astrophysical JournalWe investigate the properties of active galactic nuclei (AGNs) in the brightest submillimeter galaxies (SMGs) in the COSMOS field. We utilize the bright sample of the ALMA/SCUBA-2 COSMOS Survey (AS2COSMOS), which consists of 260 SMGs with S _870 _μ _m =
Ryosuke Uematsu +13 more
doaj +1 more source
The Intrinsic Sizes of Odd Radio Circles
The Astrophysical JournalA new class of sources, the so-called odd radio circles (ORCs), have been discovered by recent sensitive, large-area radio continuum surveys. The distances of these sources have so far relied on photometric redshifts of optical galaxies found at the ...
David S. N. Rupke +5 more
doaj +1 more source
Structures of Dusty and AGN Host Galaxies
, 2019 I will present a study of connection between star formation, active galactic nucleus (AGN), and galaxy morphology. By fitting optical to far-IR photometry with state-of-the-art spectral energy distribution (SED) techniques, we derive stellar masses, star formation rates, dust properties, and AGN contribution in galaxies over the whole COSMOS field. Our
openaire +2 more sources
PRIMUS: The relationship between Star formation and AGN accretion [PDF]
arXiv, 2014 We study the evidence for a connection between active galactic nuclei (AGN) fueling and star formation by investigating the relationship between the X-ray luminosities of AGN and the star formation rates (SFRs) of their host galaxies. We identify a sample of 309 AGN with $10^{41}
arxiv
The Masses of AGN Host Galaxies and the Origin of Radio Loudness
, 2006 We highlight some of the principal results from our recent Hubble Space Telescope studies of quasars and radio galaxies. The hosts of these powerful AGN are normal massive ellipticals which lie on the region of the fundamental plane populated predominantly by massive ellipticals with boxy isophotes and distinct cores.
Ross J. McLure, James Dunlop
openaire +3 more sources