UNCOVER: A NIRSpec Identification of a Broad-line AGN at z= 8.50

V Kokorev, S Fujimoto, I Labbe… - The Astrophysical …, 2023 - iopscience.iop.org
Deep observations with the James Webb Space Telescope (JWST) have revealed an
emerging population of red pointlike sources that could provide a link between the …

x-cigale: fitting AGN/galaxy SEDs from X-ray to infrared

G Yang, M Boquien, V Buat, D Burgarella… - Monthly Notices of …, 2020 - academic.oup.com
ABSTRACT Code Investigating GALaxy Emission (cigale) is a powerful multiwavelength
spectral energy distribution (SED) fitting code for extragalactic studies. However, the current …

Quasars as standard candles-III. Validation of a new sample for cosmological studies

E Lusso, G Risaliti, E Nardini, G Bargiacchi… - Astronomy & …, 2020 - aanda.org
We present a new catalogue of∼ 2400 optically selected quasars with spectroscopic
redshifts and X-ray observations from either Chandra or XMM–Newton. The sample can be …

The baryon oscillation spectroscopic survey of SDSS-III

KS Dawson, DJ Schlegel, CP Ahn… - The Astronomical …, 2012 - iopscience.iop.org
ABSTRACT The Baryon Oscillation Spectroscopic Survey (BOSS) is designed to measure
the scale of baryon acoustic oscillations (BAO) in the clustering of matter over a larger …

A high black-hole-to-host mass ratio in a lensed AGN in the early Universe

LJ Furtak, I Labbé, A Zitrin, JE Greene, P Dayal… - Nature, 2024 - nature.com
Early JWST observations have uncovered a population of red sources that might represent a
previously overlooked phase of supermassive black hole growth,–. One of the most …

A cosmological framework for the co-evolution of quasars, supermassive black holes, and elliptical galaxies. I. Galaxy mergers and quasar activity

PF Hopkins, L Hernquist, TJ Cox… - The Astrophysical …, 2008 - iopscience.iop.org
We develop a model for the cosmological role of mergers in the evolution of starbursts,
quasars, and spheroidal galaxies. By combining theoretically well-constrained halo and …

A unified, merger-driven model of the origin of starbursts, quasars, the cosmic X-ray background, supermassive black holes, and galaxy spheroids

PF Hopkins, L Hernquist, TJ Cox… - The Astrophysical …, 2006 - iopscience.iop.org
We present an evolutionary model for starbursts, quasars, and spheroidal galaxies in which
mergers between gas-rich galaxies drive nuclear inflows of gas, producing starbursts and …

An observational determination of the bolometric quasar luminosity function

PF Hopkins, GT Richards… - The Astrophysical …, 2007 - iopscience.iop.org
We combine a large set of quasar luminosity function (QLF) measurements from the rest-
frame optical, soft and hard X-ray, and near-and mid-IR bands to determine the bolometric …

The sloan digital sky survey quasar survey: Quasar luminosity function from data release 3

GT Richards, MA Strauss, X Fan, PB Hall… - The Astronomical …, 2006 - iopscience.iop.org
We determine the number counts and z= 0-5 luminosity function for a well-defined,
homogeneous sample of quasars from the Sloan Digital Sky Survey (SDSS). We …

The relationship between luminosity and broad-line region size in active galactic nuclei

S Kaspi, D Maoz, H Netzer, BM Peterson… - The Astrophysical …, 2005 - iopscience.iop.org
We reinvestigate the relationship between the characteristic broad-line region size (R BLR)
and the Balmer emission-line, X-ray, UV, and optical continuum luminosities. Our study …