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Euclid Quick Data Release (Q1) First study of red quasars selection
Euclid Collaboration, F. Tarsitano, S. Fotopoulou +322
Red quasars constitute an important but elusive phase in the evolution of supermassive black holes, where dust obscuration can significantly alter their observed properties. They h…
A disc wind model for blueshifts in quasar broad emission lines
James H. Matthews, Jago Strong-Wright, Christian Knigge +7
Blueshifts - or, more accurately, blue asymmetries - in broad emission lines such as CIV 1550 are common in luminous quasars and correlate with fundamental properties such as Ed…
No redshift evolution in the rest-frame UV emission line properties of quasars from z=1.5 to z=4.0
Matthew Stepney, Manda Banerji, Paul C. Hewett +4
We analyse the rest-frame UV spectra of 2,531 high-redshift (3.5<z<4.0) quasars from the Sloan Digital Sky Survey DR16Q catalogue. In combination with previous work, we study the r…
Testing AGN outflow and accretion models with CIV and HeII emission line demographics in z=2 quasars
Matthew J. Temple, James H. Matthews, Paul C. Hewett +6
Using 190,000 spectra from the seventeenth data release of the Sloan Digital Sky Survey, we investigate the ultraviolet emission line properties in z=2 quasars. Specifically, we qu…
A Fresh Look at AGN Spectral Energy Distribution Fitting with the XMM-SERVS AGN Sample
Adam Marshall, Matthew W. Auger-Williams, Manda Banerji +2
We perform spectral energy distribution (SED) fitting to 711 luminous X-ray AGN at 0.7 < z < 4.5 using 10-bands of optical and infra-red photometric data for objects within XMM-SER…
Modelling type 1 quasar colours in the era of Rubin and Euclid
Matthew J. Temple, Paul C. Hewett, Manda Banerji
We construct a parametric SED model which is able to reproduce the average observed SDSS-UKIDSS-WISE quasar colours to within one tenth of a magnitude across a wide range of redshi…
Multi-wavelength Optical and NIR Variability Analysis of the Blazar PKS 0027-426
E. Guise, S. F. Hönig, T. Almeyda +62
We present multi-wavelength spectral and temporal variability analysis of PKS 0027-426 using optical griz observations from DES (Dark Energy Survey) between 2013-2018 and VOILETTE…
The XMM-SERVS survey: XMM-Newton point-source catalogs for the W-CDF-S and ELAIS-S1 fields
Q. Ni, W. N. Brandt, C. -T. Chen +30
We present the X-ray point-source catalogs in two of the XMM-Spitzer Extragalactic Representative Volume Survey (XMM-SERVS) fields, W-CDF-S (4.6 deg) and ELAIS-S1 (3.2 deg)…
Resolving Disks & Mergers in Heavily Reddened Quasars and their Companion Galaxies with ALMA
Manda Banerji, Gareth C. Jones, Stefano Carniani +2
We present sub-arcsecond resolution ALMA imaging of the CO(3-2) emission in two heavily reddened quasars (HRQs) - ULASJ1234+0907 and ULASJ2315+0143 - and their companion…
Placing LOFAR-detected quasars in CIV emission space: implications for winds, jets and star formation
Amy L. Rankine, James H. Matthews, Paul C. Hewett +3
We present an investigation of the low-frequency radio and ultraviolet properties of a sample of 10,500 quasars from the Sloan Digital Sky Survey Data Release 14, observed…
Exploring the link between C IV outflow kinematics and sublimation-temperature dust in quasars
Matthew J. Temple, Manda Banerji, Paul C. Hewett +2
Using data from SDSS, UKIDSS and WISE, we investigate the properties of the high-frequency cutoff to the infrared emission in 5000 carefully selected luminous ($L_{bol} \si…
Discovery of a Candidate Binary Supermassive Black Hole in a Periodic Quasar from Circumbinary Accretion Variability
Wei-Ting Liao, Yu-Ching Chen, Xin Liu +68
Binary supermassive black holes (BSBHs) are expected to be a generic byproduct from hierarchical galaxy formation. The final coalescence of BSBHs is thought to be the loudest gravi…
Dust Reverberation Mapping in Distant Quasars from Optical and Mid-Infrared Imaging Surveys
Qian Yang, Yue Shen, Xin Liu +47
The size of the dust torus in Active Galactic Nuclei (AGN) and their high-luminosity counterparts, quasars, can be inferred from the time delay between UV/optical accretion disk co…
A SCUBA-2 850m Survey of Heavily Reddened Quasars at z~2
Clare F. Wethers, Manda Banerji, Paul C. Hewett +1
We present new 850m SCUBA-2 observations for a sample of 19 heavily reddened Type-I quasars at redshifts 2 with dust extinctions of A mag. Three of…
BAL and non-BAL quasars: continuum, emission and absorption properties establish a common parent sample
Amy L. Rankine, Paul C. Hewett, Manda Banerji +1
Using a sample of 144,000 quasars from the Sloan Digital Sky Survey data release 14 we investigate the outflow properties, evident both in absorption and emission, of high-…
X-ray properties of z>6.5 quasars
Estelle Pons, Richard G. McMahon, Manda Banerji +1
We present XMM-Newton X-ray observations and analysis of three DES quasars (VDES J00203653 at , VDES J02445008 at and VDES J02244711 at $z=6.526…
[OIII] Emission Line Properties in a New Sample of Heavily Reddened Quasars at
Matthew J. Temple, Manda Banerji, Paul C. Hewett +3
We present VLT-SINFONI near infra-red spectra of 26 new heavily reddened quasar candidates selected from the UKIDSS-LAS, VISTA VHS and VIKING imaging surveys. This new sample exten…
Kinematics of CIV and [OIII] emission in luminous high-redshift quasars
Liam Coatman, Paul C. Hewett, Manda Banerji +3
We characterise ionised gas outflows using a large sample of ~330 high-luminosity (45.5 < log(L_bol/erg s^-1) < 49.0), high-redshift (1.5 < z < 4.0) quasars via their [OIII]4960,50…
The case for a 'sub-millimeter SDSS': a 3D map of galaxy evolution to z~10
James E. Geach, Manda Banerji, Frank Bertoldi +53
The Sloan Digital Sky Survey (SDSS) was revolutionary because of the extraordinary breadth and ambition of its optical imaging and spectroscopy. We argue that a 'sub-millimeter SDS…
CIV Black Hole Mass Measurements with the Australian Dark Energy Survey (OzDES)
J. K. Hoormann, P. Martini, T. M. Davis +67
Black hole mass measurements outside the local universe are critically important to derive the growth of supermassive black holes over cosmic time, and to study the interplay betwe…
A new bright z=6.82 quasar discovered with VISTA: VHS J0411-0907
Estelle Pons, Richard G. McMahon, Robert A. Simcoe +3
We present the discovery of a new quasar discovered with the near-IR VISTA Hemisphere Survey (VHS) which has been spectroscopically confirmed by the ESO New Technology…
Three new VHS-DES Quasars at 6.7 < z < 6.9 and Emission Line Properties at z > 6.5
S. L. Reed, M. Banerji, G. D. Becker +58
We report the results from a search for z > 6.5 quasars using the Dark Energy Survey (DES) Year 3 dataset combined with the VISTA Hemisphere Survey (VHS) and WISE All-Sky Survey. O…
Quasar Accretion Disk Sizes from Continuum Reverberation Mapping in the DES Standard Star Fields
Zhefu Yu, Paul Martini, T. M. Davis +72
Measurements of the physical properties of accretion disks in active galactic nuclei are important for better understanding the growth and evolution of supermassive black holes. We…
A catalogue of structural and morphological measurements for DES Y1
F. Tarsitano, W. G. Hartley, A. Amara +60
We present a structural and morphological catalogue for 45 million objects selected from the first year of data from the Dark Energy Survey (DES). Single Sersic fits and non-parame…