Xiaohui Fan

KMap

❝

Dr. Fan is an observational cosmologist. The research of his group aims at answering questions such as: When did the first luminous objects appear in the Universe? How did the first generations of galaxies and quasars heat up the intergalactic gas, re-ionize the Universe and end the cosmic dark ages? He has pioneered techniques to search for the most distant quasars in the early universe, at z>6. Using these quasars, he has shown that supermassive black holes with masses up to 10 million solar masses existed within one billion years after the big bang. Meanwhile, the absorption spectra of these quasars reveal a rapid increase in cold atomic gas in the intergalactic medium, marking the end of reionziation epoch at z~6. His group is currently involved in conducting new surveys of quasars at z>7 using new near-IR large sky surveys, and studies of the co-evolution of black holes and galaxies in the early universe with facilities such as ALMA and HST. He is also involved in studying spectroscopic properties of the first generation galaxies that are responsible to reionization, using LBT, HST, and soon with JWST. In addition, he is working on a project called "MAMMOTH", a novel survey of the most massive large scale structure and protocluster environments at the peak of cosmic star formation.

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Courses

TA
Theoretical Astrophysics
EAC
Extragalactic Astronomy and Cosmology
DMMLA
Data Mining and Machine Learning in Astronomy

TPU
The Physical Universe

Grants

Clusters, Clumps, Dust and Gas in Extreme Star-Forming Galaxies
Principal Investigator (PI)
2023
$10.1K
Active
A Comprehensive JWST View of the Most Distant Quasars Deep into the Epoch of Reionization
Principal Investigator (PI)
2022
$182.7K
Active
A JWST-HST-VLT/MUSE-ALMA Treasury of Star Formation in Nearby Galaxies
Co-Investigator (COI)
2022
$177.7K
Active
Chandra Observations of the Most Distant Galaxy Protocluster Anchored by a Luminous Quasar at Z=6.63
Principal Investigator (PI)
2022
$131.3K
Active
The Host Galaxies of the First QSOs
Principal Investigator (PI)
2022
$66.6K
Active
The HST/JWST Quasar Legacy Survey: Probing the Primordial Environment of Quasars and the Topology of Cosmic Reionization
Principal Investigator (PI)
2022
$50.3K
Active
A Spectroscopic survey of biased halos In the Reionization Era (ASPIRE): A JWST Quasar Legacy Survey
Principal Investigator (PI)
2022
$49.9K
Active
Characterizing a Distant Protocluster Anchored by a Luminous z=6.64 Quasar with Keck/JWST/HST/Chandra
Co-Investigator (COI)
2022
$20.0K
Active
PHANGS-HST: Linking Stars and Gas throughout the Scales of Star Formation
Co-Investigator (COI)
2022
$15.6K
Active

Nebular Line Diagnostics in a Merger at Cosmic Dawn
Principal Investigator (PI)
2022
$11.7K
Active

News

Most Distant Quasar Discovered Sheds Light on How Black Holes Grow
2021
Scouting Ancient Supermassive Black Holes
2021
Astronomers Discover 'Monster' Quasar from Early Universe
2020
600 Trillion Suns Light up the Dawn of the Universe
2019
Cosmic 3D Mapping Machine Opens 5,000 Robotic Eyes
2019
Students Help Little Telescope Do Big Things
2018
Gargantua in the Mist: A Record-Breaking Quasar
2017
A New, Public View of the Sky
2015
Monster Black Hole Discovered at Cosmic Dawn
2015
UA Honors 'Pillars' of Research, Teaching, Engagement
2014
UA Regents’ Professors Named in College of Science, Eller College of Management
2013
This is Your Galaxy: Exploring the Hidden Milky Way
2013
November 2013: Month in Review
2013
Three UA Faculty Members Inducted as Regents' Professors, Two as Distinguished Professors
2013
Largest Ever 3-D Map of the Universe Published with UA Help
2012
UA-China Collaboration Advances Astronomy Research
2012
Sky Survey Maps Universe in 3D
2012
Astrophysicist Fang Lizhi Spent Two Decades at UA
2012
Observing Nature to Help Make Sense of a Complex World
2011
UA Astronomers Discover Most Primitive Supermassive Holes Known
2010
Astronomers Begin New Search for Dark Energy
2009
Math Prof Wins Sloan Research Fellowship
2008
UA Astronomer Xiaohui Fan Wins Guggenheim Fellowship
2008
'Astrophysics in the Next Decade' Meeting Slated for Sept. 24-27
2007
LBT Captures Extremely Faint Light With Its First Mirror and Camera
2007
Astronomers Convene First MMT Science Symposium
2006
'Cosmic Questions' and the Nature of the Universe
2004
Distant Quasars Probe End of Cosmic Dark Ages
2004
Steward Observatory's Xiaohui Fan Named to PopSci's 'Brilliant 10'
2003
AAS Gives UA Astronomers the 2003 Pierce Prize and the 2003 Weber Award
2003
Three Distant Quasars Found at Edge of the Universe
2003

UA Astronomer Wins 2003 Sloan Fellowship
2003

Publications (410)

Recent

ALMA multiline survey of the ISM in two quasar host-companion galaxy pairs at z 6
2021
Spectroscopic Confirmation of Two Extremely Massive Protoclusters, BOSS1244 and BOSS1542, at z = 2.24
2021
A Closer Look at Two of the Most Luminous Quasars in the Universe
2021
Revealing the Accretion Physics of Supermassive Black Holes at Redshift z {ensuremath{sim} 7 with Chandra and Infrared Observations}
2021
Chandra Detection of Three X-Ray Bright Quasars at z 5
2021
A Chandra survey of z {ensuremath{geq} 4.5 quasars}
2021
MAMMOTH: confirmation of two massive galaxy overdensities at z = 2.24 with H{ensuremath{alpha} emitters}
2021
Statistical Correlation between the Distribution of Ly{ensuremath{alpha} Emitters and Intergalactic Medium H I at z ensuremath{sim} 2.2 Mapped by the Subaru/Hyper Suprime-Cam}
2021
Chasing the Tail of Cosmic Reionization with Dark Gap Statistics in the Ly{ensuremath{alpha} Forest over 5 z 6}
2021
A [C II] 158 {ensuremath{mu}m emitter associated with an O I absorber at the end of the reionization epoch}
2021
A Candidate Kiloparsec-scale Quasar Pair at z = 5.66
2021
A complete search for redshift z {ensuremath{gtrsim} 6.5 quasars in the VIKING survey}
2021
The Discovery of a Highly Accreting, Radio-loud Quasar at z = 6.82
2021
Random Forests as a Viable Method to Select and Discover High-redshift Quasars
2021
The Kinematics of z {ensuremath{gtrsim} 6 Quasar Host Galaxies}
2021
ALMA Observations of the Sub-kpc Structure of the Host Galaxy of a z = 6.5 Lensed Quasar: A Rotationally Supported Hyper-Starburst System at the Epoch of Reionization
2021
Discovery of a Protocluster Core Associated with an Enormous Lya Nebula at z = 2.3
2021
Probing Early Supermassive Black Hole Growth and Quasar Evolution with Near-infrared Spectroscopy of 37 Reionization-era Quasars at 6.3 z {ensuremath{leq} 7.64}
2021
A Luminous Quasar at Redshift 7.642
2021
Evidence for GN-z11 as a luminous galaxy at redshift 10.957
2021
Strong Mg II and Fe II Absorbers at 2.2 z 6.0
2021
The 16th Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra
2020
The Sloan Digital Sky Survey Reverberation Mapping Project: Photometric g and i Light Curves
2020
Spectroscopy of Broad Absorption Line Quasars at 3 {ensuremath{lesssim} Z ensuremath{lesssim} 5. I. Evidence for Quasar Winds Shaping Broad/Narrow Emission Line Regions}
2020
No Evidence for [C II] Halos or High-velocity Outflows in z {ensuremath{gtrsim} 6 Quasar Host Galaxies}
2020
A thirty-four billion solar mass black hole in SMSS J2157-3602, the most luminous known quasar
2020
The X-SHOOTER/ALMA Sample of Quasars in the Epoch of Reionization. I. NIR Spectral Modeling, Iron Enrichment, and Broad Emission Line Properties
2020
Lyman continuum escape fraction in Ly {ensuremath{alpha} emitters at z ≃ 3.1}
2020
Kiloparsec-scale ALMA Imaging of [C II] and Dust Continuum Emission of 27 Quasar Host Galaxies at z {ensuremath{sim} 6}
2020
P{={o}niu={a}'ena: A Luminous z = 7.5 Quasar Hosting a 1.5 Billion Solar Mass Black Hole}
2020
A Significantly Neutral Intergalactic Medium Around the Luminous z = 7 Quasar J0252-0503
2020
Limits to Rest-frame Ultraviolet Emission from Far-infrared-luminous z ≃ 6 Quasar Hosts
2020
The Magellan M2FS Spectroscopic Survey of High-redshift Galaxies: A Sample of 260 Ly{ensuremath{alpha} Emitters at Redshift z ≍ 5.7}
2020
Measurements of the z {textasciitilde 6 Intergalactic Medium Optical Depth and Transmission Spikes Using a New z 6.3 Quasar Sample}
2020
Detecting and Characterizing Young Quasars. I. Systemic Redshifts and Proximity Zone Measurements
2020
Ionized and Atomic Interstellar Medium in the z = 6.003 Quasar SDSS J2310+1855
2020
Probing the Full CO Spectral Line Energy Distribution (SLED) in the Nuclear Region of a Quasar-starburst System at z = 6.003
2020
C IV Emission-line Properties and Uncertainties in Black Hole Mass Estimates of z {ensuremath{sim} 3.5 Quasars}
2020
X-Ray Observations of a [C II]-bright, z = 6.59 Quasar/Companion System
2020
Deep Hubble Space Telescope Imaging on the Extended Ly{ensuremath{alpha} Emission of a QSO at z = 2.19 with a Damped Lyman Alpha System as a Natural Coronagraph}
2020
SCUBA2 High Redshift Bright Quasar Survey: Far-infrared Properties and Weak-line Features
2020
Exploring Reionization-era Quasars. III. Discovery of 16 Quasars at 6.4 ensuremath{lesssim} z ensuremath{lesssim} 6.9 with DESI Legacy Imaging Surveys and the UKIRT Hemisphere Survey and Quasar Luminosity Function at z ̃ 6.7
2019
The Extremely Luminous Quasar Survey in the Sloan Digital Sky Survey Footprint. III. The South Galactic Cap Sample and the Quasar Luminosity Function at Cosmic Noon
2019
Star Formation and ISM Properties in the Host Galaxies of Three Far-infrared Luminous Quasars at z ̃ 6
2019
Filling in the Quasar Redshift Gap at z ̃ 5.5. II. A Complete Survey of Luminous Quasars in the Post-reionization Universe
2019
An ALMA Multiline Survey of the Interstellar Medium of the Redshift 7.5 Quasar Host Galaxy J1342+0928
2019
Spectral Energy Distributions of Companion Galaxies to z ̃ 6 Quasars
2019
Exploring Reionization-era Quasars. IV. Discovery of Six New z ensuremath{gtrsim} 6.5 Quasars with DES, VHS, and unWISE Photometry
2019
Spatially Resolved Interstellar Medium and Highly Excited Dense Molecular Gas in the Most Luminous Quasar at z = 6.327
2019
Resolving the Interstellar Medium in the Nuclear Region of Two z = 5.78 Quasar Host Galaxies with ALMA
2019
The z = 7.54 Quasar ULAS J1342+0928 Is Hosted by a Galaxy Merger
2019
Reddening of the BLR and NLR in AGNs from a systematic analysis of Balmer decrement
2019
Overview of the DESI Legacy Imaging Surveys
2019
The REQUIEM Survey. I. A Search for Extended Lyensuremath{alpha} Nebular Emission Around 31 z 5.7 Quasars
2019
X-Ray Observations of a z ensuremath{sim} 6.2 Quasar/Galaxy Merger
2019
The Extremely Luminous Quasar Survey in the Pan-STARRS 1 Footprint (PS-ELQS)
2019
Gemini GNIRS Near-infrared Spectroscopy of 50 Quasars at z ensuremath{gtrsim} 5.7
2019
ALMA and HST Kiloparsec-scale Imaging of a Quasar-galaxy Merger at Z ensuremath{approx} 6.2
2019
Quasars Have Fewer Close Companions than Normal Galaxies
2019
The Third Data Release of the Beijing─Arizona Sky Survey
2019
Far-infrared Properties of the Bright, Gravitationally Lensed Quasar J0439+1634 at z = 6.5
2019
Resolved [C II] Emission from z 6 Quasar Host-Companion Galaxy Pairs
2019
The Discovery of a Gravitationally Lensed Quasar at z = 6.51
2019
The evolution of chemical abundance in quasar broad line region
2018
No Evidence for Millimeter Continuum Source Overdensities in the Environments of znbspgsimnbsp6 Quasars
2018
Chandra X-Rays from the Redshift 7.54 Quasar ULAS J1342+0928
2018
A giant protocluster of galaxies at redshift 5.7
2018
The UKIRT Hemisphere Survey: definition and J-band data release
2018
New constraints on Lyman-$alpha$ opacity with a sample of 62 quasarsat z $gt$ 5.7
2018
Predicting Quasar Continua near Ly$alpha$ with Principal Component Analysis
2018
Dust Emission in an Accretion-rate-limited Sample of znbspgsimnbsp6 Quasars
2018
The Ensemble Photometric Variability of Over 10$^5$ Quasars in the Dark Energy Camera Legacy Survey and the Sloan Digital Sky Survey
2018
A bright-lensed galaxy at z = 5.4 with strong Ly $alpha$ emission
2018
An 800-million-solar-mass black hole in a significantly neutral Universe at a redshift of 7.5
2018
The Extremely Luminous Quasar Survey in the Sloan Digital Sky Survey Footprint. II. The North Galactic Cap Sample
2018
No Evidence for Enhanced [O III]nbsp88 $mu$m Emission in a znbspsimnbsp6 Quasar Compared to Its Companion Starbursting Galaxy
2018
Quantitative Constraints on the Reionization History from the IGM Damping Wing Signature in Two Quasars at znbsp$gt$nbsp7
2018
Photometric Calibration for the Beijing-Arizona Sky Survey and Mayall z-band Legacy Survey
2018
Discovery of 21 New Changing-look AGNs in the Northern Sky
2018
Deep CFHT Y-band Imaging of VVDS-F22 Field. II. Quasar Selection and Quasar Luminosity Function
2018
The Discovery of a Luminous Broad Absorption Line Quasar at a Redshift of 7.02
2018
The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the Extended Baryon Oscillation Spectroscopic Survey and from the Second Phase of the Apache Point Observatory Galactic Evolution Experiment
2018
The Second Data Release of the BeijingndashArizona Sky Survey
2018
The Faint End of the z = 5 Quasar Luminosity Function from the CFHTLS
2018
An ALMA [C II] Survey of 27 Quasars at z $gt$ 5.94
2018
Steep Hard-X-Ray Spectra Indicate Extremely High Accretion Rates in Weak Emission-line Quasars
2018
A Hubble Space Telescope imaging study of four FeLoBAL quasar host galaxies
2018
A quasar discovered at redshift 6.6 from Pan-STARRS1
2017
Discovery of an Enormous Ly$\alpha$ Nebula in a Massive Galaxy Overdensity at z = 2.3
2017
Gas Dynamics of a Luminous z = 6.13 Quasar ULAS J1319+0950 Revealed by ALMA High-resolution Observations
2017
Milliarcsecond Imaging of the Radio Emission from the Quasar with the Most Massive Black Hole at Reionization
2017
Scuss u-Band Emission as a Star-Formation-Rate Indicator
2017
The Sloan Digital Sky Survey Quasar Catalog: Twelfth data release
2017
XMM-Newton observation of the ultraluminous quasar SDSS J010013.02+280225.8 at redshift 6.326
2017
First Discoveries of z $\gt$ 6 Quasars with the DECam Legacy Survey and UKIRT Hemisphere Survey
2017
Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe
2017
The Extremely Luminous Quasar Survey in the SDSS Footprint. I. Infrared-based Candidate Selection
2017
Rapidly star-forming galaxies adjacent to quasars at redshifts exceeding 6
2017
A Magellan M2FS Spectroscopic Survey of Galaxies at 5.5 $\lt$ z $\lt$ 6.8: Program Overview and a Sample of the Brightest Ly$\alpha$ Emitters
2017
Mapping the Most Massive Overdensities through Hydrogen (MAMMOTH). II. Discovery of the Extremely Massive Overdensity BOSS1441 at z = 2.32
2017
Cosmic Reionization on Computers: Properties of the Post-reionization IGM
2017
Galactic Extinction and Reddening from the South Galactic Cap u-band Sky Survey: u-band Galaxy Number Counts and u - r Color Distribution
2017
The Physical Constraints on a New LoBAL QSO at z = 4.82
2017
The First Data Release of the Beijing-Arizona Sky Survey
2017
Physical Properties of 15 Quasars at z \gsim 6.5
2017
Discovery of 16 New z \tilde 5.5 Quasars: Filling in the Redshift Gap of Quasar Color Selection
2017
Physical Properties of the First Quasars
2017
High Lyman Continuum Escape Fraction in a Lensed Young Compact Dwarf Galaxy at z = 2.5
2017
Probing the Metal Enrichment of the Intergalactic Medium at z = 5-6 Using the Hubble Space Telescope
2017
Copious Amounts of Dust and Gas in a z = 7.5 Quasar Host Galaxy
2017
Mapping the heavens
2017
Quasar Photometric Redshifts and Candidate Selection: A New Algorithm Based on Optical and Mid-infrared Photometric Data
2017
Project Overview of the Beijing-Arizona Sky Survey
2017
Bo\ otes-HiZELS: an optical to near-infrared survey of emission-line galaxies at z = 0.4-4.7
2017
Constraining C III] Emission in a Sample of Five Luminous z = 5.7 Galaxies
2017
South Galactic Cap u-band Sky Survey (SCUSS): Data Release
2016
Reverberation Mapping with Intermediate-band Photometry: Detection of Broad-line H{$alpha$ Time Lags for Quasars at 0.2 $lt$ z $lt$ 0.4}
2016
Exploratory Chandra Observation of the Ultraluminous Quasar SDSS J010013.02+280225.8 at Redshift 6.30
2016
The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: selecting emission line galaxies using the Fisher discriminant
2016
The Pan-STARRS1 Distant z $gt$ 5.6 Quasar Survey: More than 100 Quasars within the First Gyr of the Universe
2016
Physical Properties of Spectroscopically Confirmed Galaxies at z {ge 6. III. Stellar Populations from SED Modeling with Secure Ly$alpha$ Emission and Redshifts}
2016
Probing the Interstellar Medium and Star Formation of the Most Luminous Quasar at z = 6.3
2016
Stellar and Black Hole Mass Densities as Empirical Tracers of Co-evolution Show Lock-step Growth since Z {tilde 3}
2016
A Survey of Luminous High-redshift Quasars with SDSS and WISE. II. the Bright End of the Quasar Luminosity Function at z {ap 5}
2016
South Galactic Cap u-band Sky Survey (SCUSS): Project Overview
2016
FeLoBAL quasars: evolution, orientation or just oddBALs?
2016
The SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Overview and Early Data
2016
SpIES: The Spitzer IRAC Equatorial Survey
2016
Mapping the Most Massive Overdensity Through Hydrogen (MAMMOTH) I: Methodology
2016
The Final SDSS High-redshift Quasar Sample of 52 Quasars at z$gt$5.7
2016
A Constraint on Quasar Clustering at z = 5 from a Binary Quasar
2016
Discovery of a 12 billion solar mass black hole at redshift 6.3 and its challenge to the black hole/galaxy coevolution at cosmic dawn
2016
A Survey of Luminous High-redshift Quasars with SDSS and WISE. I. Target Selection and Optical Spectroscopy
2016
DISCOVERY OF EIGHTz∼ 6 QUASARS IN THE SLOAN DIGITAL SKY SURVEY OVERLAP REGIONS
2015
{Bayesian High-redshift Quasar Classification from Optical and Mid-IR Photometry}
2015
{Capability of Quasar Selection by Combining SCUSS and SDSS Observations}
2015
{Detection of Rest-frame Optical Lines from X-shooter Spectroscopy of Weak Emission Line Quasars}
2015
{Bright [C II] 158 {$mu$}m Emission in a Quasar Host Galaxy at z = 6.54}
2015
{An Extended View of the Pisces Overdensity from the SCUSS Survey}
2015
{The Sloan Digital Sky Survey Reverberation Mapping Project: Technical Overview}
2015
{LBT/LUCI Spectroscopic Observations of z{sime}7 Galaxies}
2015
{Black Hole Mass Estimates and Rapid Growth of Supermassive Black Holes in Luminous z ~{} 3.5 Quasars}
2015
{Imaging the cold molecular gas in SDSS J1148 + 5251 at z = 6.4}
2015
{Discovery of a 12 billion solar mass black hole at redshift 6.3 and its challenge to the black hole/galaxy co-evolution at cosmic dawn}
2015
{Constraining Very High Mass Population III Stars through He II Emission in Galaxy BDF-521 at z = 7.01}
2015
{Constraining the Radio-loud Fraction of Quasars at z $gt$ 5.5}
2015
{The Identification of Z-dropouts in Pan-STARRS1: Three Quasars at 6.5$lt$ z$lt$ 6.7}
2015
{An Investigation of the Absolute Proper Motions of the SCUSS Catalog}
2015
{The 0.1 $lt$z $lt$ 1.65 evolution of the bright end of the [O ii] luminosity function}
2015
{South Galactic Cap u-band Sky Survey (SCUSS): Data Reduction}
2015
{Discovery of Eight z {sim} 6 Quasars in the Sloan Digital Sky Survey Overlap Regions}
2015
{Iron Low-ionization Broad Absorption Line quasars - the missing link in galaxy evolution?}
2015
{Photometric metallicity calibration with SDSS and SCUSS and its application to distant stars in the south Galactic cap}
2015
{Rest-frame Optical Spectra and Black Hole Masses of 3 $lt$z$lt$6 Quasars}
2015
{The Eleventh and Twelfth Data Releases of the Sloan Digital Sky Survey: Final Data from SDSS-III}
2015
{An Ultra-luminous Quasar at z = 5.363 with a Ten Billion Solar Mass Black Hole and a Metal-rich DLA at z {tilde} 5}
2015
{An ultraluminous quasar with a twelve-billion-solar-mass black hole at redshift 6.30}
2015
Discovery of Eight z \~ 6 Quasars from Pan-STARRS1
2014
Optical selection of quasars: SDSS and LSST
2014
The Tenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-III Apache Point Observatory Galactic Evolution Experiment
2014
SDSS J013127.34-032100.1: A Newly Discovered Radio-loud Quasar at z = 5.18 with Extremely High Luminosity
2014
Estimation of absolute magnitude-dependent Galactic model parameters in intermediate latitude with SDSS and SCUSS
2014
Spectral Energy Distributions of QSOs at z \gt 5: Common Active Galactic Nucleus-heated Dust and Occasionally Strong Star-formation
2014
The Sloan Digital Sky Survey Stripe 82 Imaging Data: Depth-optimized Co-adds over 300 deg$^2$ in Five Filters
2014
VizieR Online Data Catalog: SDSS quasar catalog: tenth data release (Paris+, 2014)
2014
The XMM-Newton View of Weak Emission-Line Quasars
2014
The Sloan Digital Sky Survey Coadd: 275 deg$^2$ of Deep Sloan Digital Sky Survey Imaging on Stripe 82
2014
The Sloan Digital Sky Survey quasar catalog: tenth data release
2014
A Glimpse at Quasar Host Galaxy Far-UV Emission Using Damped Ly$\alpha$'s as Natural Coronagraphs
2014
MApping the Most Massive Overdensity Through Hydrogen (MAMMOTH)
2014
The discovery of eight z \~ 6 quasars from Pan-STARRS1
2014
Chandra and MMT observations of low-mass black hole active galactic nuclei accreting at low rates in dwarf galaxies
2014
The Clustering of Quasars at Redshift 2.5 from the Final SDSS-III/BOSS Sample
2014
Close Companions to Two High-redshift Quasars
2014
Spectroscopy in the Era of LSST
2013
The LBT boötes field survey. I. the rest-frame ultraviolet and near-infrared luminosity functions and clustering of bright lyman break galaxies at Z ∼ 3
2013
Physical properties of spectroscopically confirmed galaxies at z ≥ 6. I. basic characteristics of the rest-frame UV continuum and Lyα emission
2013
[C II] Line Emission and Star Formation from Quasar Host Galaxies at 6
2013
Luminosity function from dedicated SDSS-III and MMT data of quasars in 0.7 z 4.0 selected with a new approach
2013
Star formation and gas kinematics of quasar host galaxies at z ∼ 6: New insights from ALMA
2013
AGN Science with the LSST
2013
Physical properties of spectroscopically confirmed galaxies at z ≥ 6. II. Morphology of the rest-frame UV continuum and Lyα emission
2013
The sdss-iii baryon oscillation spectroscopic survey: The quasar luminosity function from data release nine
2013
The baryon oscillation spectroscopic survey of SDSS-III
2013
An HST Snapshot Survey for Gravitationally Lensed z=6 Quasars
2013
Complete infrared spectral energy distributions of millimeter detected quasars at z 5
2013
Quasar Host Galaxies at z=2 and z=6: Point Source Subtraction With MCMC
2013
The z = 5 quasar luminosity function from SDSS stripe 82
2013
Large-Scale Star Formation-Driven Outflows at 1 ltz lt2 in the 3D-HST Survey
2013
Deep LBT/LUCI spectroscopy of an Lyα emitter candidate at z ≃ 7.7
2013
Luminous 3 Lyman Break Galaxies in Deep and Wide Field Surveys
2013
The SDSS-III BOSS DR9 Quasar Luminosity Function
2012
Dust Properties In Afterglow Of GRB 071025 At z 5
2012
Star formation in quasar host galaxies at redshift 6: Millimeter surveys and new insights from ALMA
2012
The first high-redshift quasar from pan-starrs
2012
3D-HST: A wide-field grism spectroscopic survey with the hubble space telescope
2012
Transport Magnetic Proximity Effects in Platinum
2012
Seebeck Rectification Enabled by Intrinsic Thermoelectrical Coupling in Magnetic Tunneling Junctions
2012
Large-scale star-formation-driven outflows at 1 z 2 in the 3D-HST survey
2012
Hubble Space Telescope narrowband search for extended Lyα emission around two z 6 quasars
2012
Near-infrared imaging of A z = 6.42 quasar host galaxy with the hubble space telescope wide field camera 3
2012
Observations of the first light and the epoch of reionization
2012
The clustering of intermediate-redshift quasars as measured by the Baryon Oscillation Spectroscopic Survey
2012
The ninth data release of the sloan digital sky survey: First spectroscopic data from the sdss-iii baryon oscillation spectroscopic survey
2012
The Sloan Digital Sky Survey quasar catalog: Ninth data release
2012
Clustering Near the Epoch of Peak Quasar Activity with SDSS-III/BOSS
2012
A uniformly selected sample of low-mass black holes in seyfert1 galaxies
2012
WFC3 Imaging Of z=6 Quasars: Examining The Host Galaxies Of AGN In The Early Universe
2012
The Lbt Bootes Field Survey: Luminosity Function And Clustering Of Z 3 Lbgs At The Bright End.
2012
Quasars in the Cosmic Environment
2012
The z 5 Quasar Luminosity Function From SDSS Stripe 82
2012
An ultraviolet ultra-luminous lyman break galaxy at Z = 2.78 in NDWFS boötes field
2012
The BigBOSS QSO Pilot Survey
2012
Erratum: The eighth data release of the sloan digital sky survey: First data from SDSS-III (The Astrophysical Journal Supplement Series (2011) 193 (29))
2011
Probing very bright end of galaxy luminosity function at z ≳ 7 using Hubble Space Telescope Pure Parallel observations
2011
What controls the Fe II strength in active galactic nuclei?
2011
First spectroscopic measurements of [O III] emission from Lyα selected field galaxies at z ∼ 3.1
2011
Discovering the missing 2.2 z 3 quasars by combining optical variability and optical/near-infrared colors
2011
Dust properties in the afterglow of GRB 071025 at z∼5
2011
The ultraviolet-to-mid-infrared spectral energy distribution of weak emission line quasars
2011
Constraints on the universal C IV mass density at z ∼ 6 from early infrared spectra obtained with the Magellan fire spectrograph
2011
CO (2-1) line emission in redshift 6 quasar host galaxies
2011
The first (nearly) model-independent constraint on the neutral hydrogen fraction at
2011
Evidence for non-evolving fe II/Mg II ratios in rapidly accreting z ∼ 6 QSOs
2011
Hubble space telescope observations of field ultracool dwarfs at high galactic latitude
2011
Far-infrared and molecular co emission from the host galaxies of faint quasars at z ∼ 6
2011
First results from the 3D-HST survey: The striking diversity of massive galaxies at z 1
2011
THE FIRST SUPERMASSIVE BLACK HOLES IN THE UNIVERSE
2011
The eighth data release of the sloan digital sky survey: First data from SDSS-III
2011
Molecular gas in z ∼ 6 quasar host galaxies
2010
The highest-redshift quasars
2010
SDSS J094604.90+183541.8: A gravitationally lensed quasar at z = 4.8
2010
Herschel -PACS far-infrared photometry of two z 4 quasars
2010
Weak line quasars at high redshift: Extremely high accretion rates or anemic broad-line regions?
2010
The extinction law at high redshift and its implications
2010
Constraints on black hole growth, quasar lifetimes, and Eddington ratio distributions from the SDSS broad-line quasar black hole mass function
2010
The sloan digital sky survey quasar catalog. V. Seventh data release
2010
The prevalence of narrow optical Fe II emission lines in type 1 active galactic nuclei
2010
Light curve templates and galactic distribution of RR lyrae stars from sloan digital sky survey stripe 82
2010
Binary quasars at high redshift. II. Sub-Mpc clustering at z ∼ 3-4
2010
Multiwavelength observations of radio-quiet quasars with weak emission lines
2010
Binary quasars at high redshift. I. 24 new quasar pairs at z ∼ 3-4
2010
Dust-free quasars in the early Universe
2010
Ionization near zones associated with quasars at z ∼ 6
2010
The 0.8-14.5 μm Spectra of mid-L to mid-T dwarfs: Diagnostics of effective temperature, grain sedimentation, gas transport, and surface gravity
2009
High-redshift sdss quasars with weak emission lines
2009
A survey of z ∼ 6 quasars in the sloan digital sky survey deep stripe. II. Discovery of six quasars at z sub AB /sub 21
2009
Near-infrared spectroscopy of sdss J0303 - 0019: A Low-luminosity, high-eddington-ratio quasar at z ∼ 6
2009
The distribution and evolution of black hole mass in broad line quasars
2009
Eddington ratio governs the equivalent width of Mg II emission line in active galactic nuclei
2009
A catalog of broad absorption line quasars in Sloan digital sky survey data release 5
2009
The seventh data release of the sloan digital sky survey
2009
Quasar clustering from SDSS DR5: Dependences on physical properties
2009
The 0.8 to 14.5 μm spectral energy distributions of mid-L to mid-T dwarfs
2009
On the physical mechanism underlying PC1 and baldwin effect in quasars
2009
Determining quasar black hole mass functions from their broad emission lines: Application to the bright Quasar Survey
2009
X-ray insights into the nature of weak emission-line quasars at high redshift
2009
SPACE: The spectroscopic all-sky cosmic explorer
2009
Observational constraints of the end of cosmic reionization
2008
A flexible method of estimating luminosity functions
2008
The sixth data release of the sloan digital sky survey
2008
A sample of quasars with strong nitrogen emission lines from the sloan digital sky survey
2008
Mass functions of the active black holes in distant quasars from the sloan digital sky survey data release 3
2008
Thermal emission from warm dust in the most distant quasars
2008
Modeling the dust properties of z ∼ 6 quasars with art sup 2 /sup - All-wavelength radiative transfer with adaptive refinement tree
2008
A survey of z ∼ 6 Quasars in the sloan digital sky survey deep stripe. I. A flux-limited sample at z sub AB /sub 21
2008
Four faint T dwarfs from the UKIRT infrared deep sky survey (UKIDSS) southern stripe
2008
SHARC-II 350 μm observations of thermal emission from warm dust in z ≥ 5 quasars
2008
Luminosity function constraints on the evolution of massive red galaxies since z ∼ 0.9
2008
Glimpsing through the high-redshift neutral hydrogen fog
2008
Physical parameters of two very cool T dwarfs
2007
Millimeter and radio observations of z ∼ 6 quasars
2007
Gemini near-infrared spectroscopy of luminous z ∼ 6 quasars: Chemical abundances, black hole masses, and Mg II absorption
2007
Does the age of liquid crystal displays influence observer performance?
2007
A spitzer warm mission ultra-wide survey as a target finder for the james webb space telescope
2007
The fifth data release of the sloan digital sky survey
2007
3.6-7.9 μm photometry of L and T dwarfs and the prevalence of vertical mixing in their atmospheres
2007
The sloan digital sky survey quasar catalog. IV. Fifth data release
2007
Observational constraints of cosmic reionization
2007
Clustering of high-redshift (z ≥ 2.9) quasars from the sloan digital sky survey
2007
The radio-loud fraction of quasars is a strong function of redshift and optical luminosity
2007
Black hole masses and enrichment of z ∼ 6 SPSS quasars
2007
Detection of 1.6 × 10 sup 10 /sup M sub ⊙ /sub of molecular gas in the host galaxy of the z = 5.77 SDSS quasar J0927+2001
2007
Was the Universe neutral beyond redshift six?
2007
The sloan digital sky survey quasar survey: Quasar luminosity function from data release 3
2006
Constraining the evolution of the ionizing background and the epoch of reionization with z ∼ 6 quasars. II. A sample of 19 quasars
2006
A snapshot survey for gravitational lenses among z ≥ 4.0 quasars. II. Constraints on the 4.0 z 5.4 quasar population
2006
Evolution of high-redshift quasars
2006
A survey of z 5.7 quasars in the sloan digital sky survey. IV. Discovery of seven additional quasars
2006
Erratum: A snapshot survey for gravitational lenses among z ≥ 4.0 quasars. II. Constraints on the 4.0 z 5.4 quasar population (Astronomical Journal (2006) 131 (49))
2006
SDSS J1534+1615AB: A novel T dwarf binary found with Keck laser guide star adaptive optics and the potential role of binarity in the L/T transition
2006
Binary quasars in the sloan digital sky survey: Evidence for excess clustering on small scales
2006
Observational constraints on cosmic reionization
2006
The fourth data release of the Sloan Digital Sky Survey
2006
Metallicity and black hole masses of z≃6 quasars
2006
Spectral energy distributions and multiwavelength selection of type 1 quasars
2006
Seventy-one new L and T dwarfs from the sloan digital sky survey
2006
A spectroscopic survey of faint quasars in the SDSS deep stripe. I. Preliminary results from the co-added catalog
2006
Chandra observations of the highest redshift quasars from the sloan digital sky survey
2006
A catalog of broad absorption line quasars from the Sloan Digital Sky Survey Third Data Release
2006
Quasars probing quasars. I. Optically thick absorbers near luminous quasars
2006
Cosmic Reionization Redux
2006
Differential use of image enhancement techniques by experienced and inexperienced observers
2005
The third data release of the sloan digital sky survey
2005
Active galactic nuclei in the sloan digital sky survey. II. Emission-line luminosity function
2005
The sloan digital sky survey quasar catalog. III. Third data release
2005
Near-infrared photometry and spectroscopy of L and T dwarfs: The effects of clouds, gravity, and effective temperature
2005
The X-ray spectral properties and variability of luminous high-redshift active galactic nuclei
2005
The 2dF-SDSS LRG and QSO (2SLAQ) Survey: The z 2.1 quasar luminosity function from 5645 quasars to g = 21.85
2005
Hubble space telescope advanced camera for surveys observations of the Z = 6.42 quasar sdss J1148+5251: A leak in the gunn-peterson trough
2005
An empirical calibration of the completeness of the SDSS quasar survey
2005
Large-scale clustering of sloan digital sky survey quasars: Impact of the baryon density and the cosmological constant
2005
Determining the MTF of medical imaging displays using edge techniques
2005
Active galactic nuclei in the sloan digital sky survey. I. Sample selection
2005
A second stellar color locus: A bridge from white dwarfs to M stars
2004
Radio continuum imaging of far-infrared-luminous QSOs at z 6
2004
X-rays from the first massive black holes
2004
A survey of z 5.7 quasars in the sloan digital sky survey. III. Discovery of five additional quasars
2004
Resolved molecular gas in a quasar host galaxy at redshift z = 6.42
2004
The second data release of the sloan digital sky survey
2004
Preliminary parallaxes of 40 L and T dwarfs from the US naval observatory infrared astrometry program
2004
Near-infrared photometry and spectroscopy of L and T dwarfs: The effects of temperature, clouds, and gravity
2004
A snapshot survey for gravitational lenses among z ≥ 4.0 quasars. I. The z 5.7 sample
2004
L′ and M′ photometry of ultracool dwarfs
2004
Type la supernova rate at a redshift of ∼0.1
2004
Sloan digital sky survey imaging of low galactic latitude fields: Technical summary and data release
2004
Efficient photometric selection of quasars from the sloan digital sky survey: 100,000 z 3 quasars from data release one
2004
Sensitive observations at 1.4 and 250 GHz of z 5 QSOs
2003
Chandra and XMM-Newton observations of the first quasars: X-rays from the age of cosmic enlightenment
2003
Two rare magnetic cataclysmic variables with extreme cyclotron features identified in the Sloan Digital Sky Survey
2003
The first data release of the sloan digital sky survey
2003
The C IV mass density of the universe at redshift 5
2003
A large, uniform sample of X-ray-emitting AGNs: Selection approach and an initial catalog from the ROSAT all-sky and sloan digital sky surveys
2003
Probing the ionization state of the universe at z 6
2003
An initial survey of white dwarfs in the Sloan Digital Sky Survey
2003
The near-IR properties and continuum shapes of high redshift quasars from the sloan digital sky survey
2003
Astronomy. Black holes at the cosmic dawn
2003
A survey of z 5.7 quasars in the Sloan Digital Sky Survey. II - Discovery of three additional quasars at z 6
2003
Combining wilkinson microwave anisotropy probe and sloan digital sky survey quasar data on reionization constrains cosmological parameters and star formation efficiency
2003
The sloan digital sky survey quasar catalog. II. First data release
2003
Molecular gas in the host galaxy of a quasar at redshift z = 6.42
2003
Dust emission from the most distant quasars
2003
Continuum and emission-line properties of broad absorption line quasars
2003
SDSS white dwarfs with spectra showing atomic oxygen and/or carbon lines
2003
VLT+UVES spectroscopy of the Ca II low-ionization broad absorption line quasar SDSS J030000.56+004828.0
2003
Red and reddened quasars in the sloan digital sky survey
2003
High-excitation CO in a quasar host galaxy at z = 6.42
2003
Infrared photometry of late-M, L, and T dwarfs
2002
Optical and radio properties of extragalactic sources observed by the first survey and the sloan digital sky survey
2002
Toward spectral classification of L and T Dwarfs: Infrared and optical spectroscopy and analysis
2002
Exploratory Chandra observations of the three highest redshift quasars known
2002
Sloan digital sky survey: Early data release
2002
Intermediate-band surface photometry of the edge-on galaxy NGC 4565
2002
VLT optical and near-infrared observations of the z = 6.28 quasar SDSS J1030+0524
2002
An FeLoBAL binary quasar
2002
Evolution of the ionizing background and the epoch of reionization from the spectra of z ∼ 6 quasars
2002
Clouds and chemistry: Ultracool dwarf atmospheric properties from optical and infrared colors
2002
L dwarfs found in sloan digital sky survey commissioning data. II. Hobby-Eberly Telescope observations
2002
The sloan digital sky survey Quasar Catalog. I. Early data release
2002
Characterization of M, L, and T dwarfs in the sloan digital sky survey
2002
Comparison of positions and magnitudes of asteroids observed in the sloan digital sky survey with those predicted for known asteroids
2002
Unusual broad absorption line quasars from the Sloan Digital Sky Survey
2002
Spectroscopic target selection in the sloan digital sky survey: The quasar sample
2002
Faint high-latitude carbon stars discovered by the sloan digital sky survey: Methods and initial results
2002
Composite quasar spectra from the sloan digital sky survey
2001
An XMM-Newton detection of the z = 5.80 X-ray-weak quasar SDSSp J104433.04012502.2
2001
High-redshift quasars found in sloan digital sky survey commissioning data. VI. Sloan digital sky survey spectrograph observations
2001
High-redshift quasars found in sloan digital sky survey commissioning data. III. A color-selected sample at i* 20 in the fall equatorial stripe
2001
A new very cool white dwarf discovered by the Sloan Digital Sky Survey
2001
Photometric redshifts of quasars
2001
Evidence for reionization at z ∼ 6: Detection of a gunn-peterson trough in a z = 6.28 quasar
2001
A survey of z 5.8 quasars in the sloan digital sky survey. I. Discovery of three new quasars and the spatial density of luminous quasars at z ∼ 6
2001
High-redshift quasars found in sloan digital sky survey commissioning data. IV. Luminosity function from the fall equatorial stripe sample
2001
Broad absorption line quasars in the sloan digital sky survey with VLA first radio detections
2001
A 250 GHz survey of high-redshift quasars from the sloan digital sky survey
2001
J-band spectroscopy of the z = 5.74 broad absorption line quasar SDSSP J104433.04-012502.2
2001
Exploratory Chandra observations of the highest-redshift quasars: X-rays from the dawn of the modern universe
2001
High-redshift quasars found in sloan digital sky survey commissioning data. V. Hobby-Eberly telescope observations
2001
Solar system objects observed in the Sloan Digital Sky Survey commissioning data
2001
Colors of 2625 quasars at 0 z 5 measured in the sloan digital sky survey photometric system
2001
Spatially resolved spectrophotometry of M81: Age, metallicity, and reddening maps
2000
Dust emission from high-redshift QSOs
2000
The discovery of a second field methane brown dwarf from sloan digital sky survey commissioning data
2000
The discovery of a luminous z = 5.80 quasar from the sloan digital sky survey
2000
Five high-redshift quasars discovered in commissioning imaging data of the sloan digital sky survey
2000
The missing link: Early methane ( T ) dwarfs in the sloan digital Sky Survey
2000
The Low-Resolution Spectrograph of the Hobby-Eberly Telescope. II. Observations of quasar candidates from the Sloan Digital Sky Survey
2000
Optical and infrared colors of stars observed by the Two Micron All Sky Survey and the Sloan Digital Sky Survey
2000
Calibration of the BATC survey: Methodology and accuracy
2000
Discovery of a pair of z = 4.25 quasars from the Sloan Digital Sky Survey
2000
Candidate RR Lyrae stars found in Sloan Digital Sky Survey commissioning data
2000
The Sloan Digital Sky Survey: Technical summary
2000
L dwarfs found in sloan digital sky survey commissioning imaging data
2000
High-redshift quasars found in sloan digital sky survey commissioning data. II. The spring equatorial stripe
2000
Deep intermediate-band surface photometry of NGC 5907
1999
The discovery of a field methane dwarf from sloan digital sky survey commissioning data
1999
The discovery of a high-redshift quasar without emission lines from Sloan Digital Sky Survey commissioning data
1999
Catalog of four-color photometry of stars, galaxies, and QSOs using SDSS filters
1999
Simulation of stellar objects in SDSS color space
1999
An automated cluster finder: The adaptive matched filter
1999
High-redshift quasars found in Sloan Digital Sky Survey commissioning data
1999
A lightweight universe?
1998
Ring structure and warp of NGC 5907: Interaction with dwarf galaxies
1998
The most massive distant clusters: Determining Ω and σ sub 8 /sub
1998
Constraining Ω with Cluster Evolution
1997
Multiband photometry of selected areas in a study of galactic structure
1997
Determining the Amplitude of Mass Fluctuations in the Universe
1997
Quasar photometry with the SDSS monitor telescope
1997
Deep wide-field spectrophotometry of the open cluster M67
1996

Variation of QSO color indices with redshift
1994

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