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Courses
  • C
    Cosmology

  • AA
    Astronomy and Astrophysics

  • TIMSF
    The Interstellar Medium and Star Formation

  • SDG
    Structure and Dynamics of Galaxies

  • TA
    Theoretical Astrophysics

Grants
  • Funding agency logo
    Deciphering a Timeline of Reionization Using the Keck Observatory Archive

    Co-Investigator (COI)

    2023

    $111.4K
    Active
  • Funding agency logo
    Revealing the Ionizing Spectrum of Low-Metallicity Galaxies with MIR

    Principal Investigator (PI)

    2023

    $19.4K
    Active
  • Funding agency logo
    Massive Stellar Populations at Reionization Metallicities: Anchoring Stellar Population Models for the JWST Era

    Principal Investigator (PI)

    2022

    $72.8K
    Active
  • Funding agency logo
    The AURORA Survey: First Direct Metallicity Calibrations at High Redshift

    Principal Investigator (PI)

    2022

    $32.5K
    Active
  • Funding agency logo
    A Spatially Resolved View of Star Formation in Two Luminous z>=8 Galaxies Showing Prominent Dust-Continuum Emission

    Principal Investigator (PI)

    2022

    $20.0K
    Active
  • Funding agency logo
    NSF-BSF: Galaxies in the Reionization Era

    Principal Investigator (PI)

    2021

    $320.5K
    Active
  • Funding agency logo
    Painting the First Empirical Picture of Massive Stars Below Metallicity of the SMC with ULLYSES

    Principal Investigator (PI)

    2021

    $20.0K
    Active
  • Funding agency logo
    Massive Stellar Populations at Reionization-Era Metallicities with Ultra-Deep HST/COS Spectroscopy

    Principal Investigator (PI)

    2020

    $248.1K
    Active
  • Funding agency logo
    Ultra-Deep HST/COS Spectroscopy of Extremely Metal-Poor Galaxies

    Principal Investigator (PI)

    2020

    $80.6K
    Active
  • Funding agency logo
    Uncovering Extremely Metal-Poor Massive Stars in Leo A

    Principal Investigator (PI)

    2020

    $36.5K
    Active
News
  • New Cohort of Two Dozen University Fellows Named

    2016

  • Hubble's UA-Made 'Eyes' Help Us See Space

    2015

  • UA Astronomers Discover Planet That Shouldn't Be There

    2013

  • Astronomers Pinpoint Elusive Galaxy – and Find it is Not Alone

    2012

  • UA Astronomers Glimpse Galaxies Near Cosmic Dawn

    2012

Publications (198)
Recent
  • Hubble Space Telescope Imaging of Isolated Local Volume Dwarfs GALFA Dw3 and Dw4

    2022

  • Radio and Far-IR emission associated with a massive star-forming galaxy candidate at z≃6.8: A radio-loud AGN in the reionization era?

    2022

  • The ALMA REBELS Survey: Specific Star-Formation Rates in the Reionization Era

    2022

  • The ALMA REBELS survey: the dust content of z 7 Lyman break galaxies

    2022

  • Stellar populations and star formation histories of the most extreme [OIII] emitters at $z=1.3-3.7$

    2022

  • The ALMA REBELS Survey: Dust Continuum Detections at z 6.5

    2022

  • The ALMA REBELS Survey: Efficient Ly$\alpha$ Transmission of UV-Bright z$\simeq$7 Galaxies from Large Velocity Offsets and Broad Line Widths

    2022

  • Strong Lyman-\ensuremath{\alpha} emission in an overdense region at z = 6.8: a very large (R 3 physical Mpc) ionized bubble in COSMOS?

    2022

  • Deep Realistic Extragalactic Model (DREaM) Galaxy Catalogs: Predictions for a Roman Ultra-deep Field

    2022

  • The ALMA REBELS Survey. Epoch of Reionization giants: Properties of dusty galaxies at z ≍ 7

    2022

  • The REBELS ALMA Survey: cosmic dust temperature evolution out to z 7

    2022

  • The COS Legacy Archive Spectroscopy SurveY (CLASSY) Treasury Atlas

    2022

  • Spectroscopy of an extreme [O III] emitting active galactic nucleus at z = 3.212: implications for the reionization era

    2022

  • Normal, dust-obscured galaxies in the epoch of reionization

    2021

  • MMT spectroscopy of Lyman-alpha at z ≃ 7: evidence for accelerated reionization around massive galaxies

    2021

  • RELICS: Properties of z \ensuremath{\geq} 5.5 Galaxies Inferred from Spitzer and Hubble Imaging, Including A Candidate z \ensuremath{\sim} 6.8 Strong [O III] emitter

    2021

  • Ultraviolet spectra of extreme nearby star-forming regions: Evidence for an overabundance of very massive stars

    2021

  • Stars and gas in the most metal-poor galaxies - I. COS and MUSE observations of SBS 0335-052E

    2021

  • Direct Constraints on the Extremely Metal-Poor Massive Stars Underlying Nebular C IV Emission from Ultra-Deep HST/COS Ultraviolet Spectroscopy

    2021

  • Rest-frame UV spectroscopy of extreme [O III] emitters at 1.3 z 3.7: toward a high-redshift UV reference sample for JWST

    2021

  • Lyman-alpha spectroscopy of extreme [O III] emitting galaxies at z ≃ 2-3: implications for Ly\ensuremath{\alpha} visibility and LyC leakage at z 6

    2021

  • The Prevalence of Galaxy Overdensities Around UV-Luminous Lyman $\mathbf\alpha$ Emitters in the Epoch of Reionization

    2021

  • Evidence for GN-z11 as a luminous galaxy at redshift 10.957

    2021

  • The Detection of Ionized Carbon Emission at z 8

    2021

  • The VANDELS ESO public spectroscopic survey. Final data release of 2087 spectra and spectroscopic measurements

    2021

  • The [O III]+H \ensuremath{\beta} equivalent width distribution at z ≃ 7: implications for the contribution of galaxies to reionization

    2021

  • Kinematics of the Circumgalactic Medium of a z = 0.77 Galaxy from Mg II Tomography

    2021

  • Reionization Era Bright Emission Line Survey: Selection and Characterization of Luminous Interstellar Medium Reservoirs in the z 6.5 Universe

    2021

  • Effects of self-consistent rest-ultraviolet colours in semi-empirical galaxy formation models

    2020

  • Searching for z 6.5 Analogs Near the Peak of Cosmic Star Formation

    2020

  • RELICS: A Very Large (\ensuremath{\theta}$_E$ \ensuremath{\sim} 40″) Cluster Lens\textemdashRXC J0032.1+1808

    2020

  • RELICS: The Reionization Lensing Cluster Survey and the Brightest High-z Galaxies

    2020

  • High-mass X-ray binaries in nearby metal-poor galaxies: on the contribution to nebular He II emission

    2020

  • The Lyman Continuum Escape Survey. II. Ionizing Radiation as a Function of the [O III]/[O II] Line Ratio

    2020

  • The Ionizing Photon Production Efficiency (\ensuremath{\xi}$_ion$) of Lensed Dwarf Galaxies at z \textasciitilde 2

    2020

  • Clustering with JWST: Constraining galaxy host halo masses, satellite quenching efficiencies, and merger rates at z = 4-10

    2020

  • Exploring chemical homogeneity in dwarf galaxies: a VLT-MUSE study of JKB 18

    2020

  • The Lyman Continuum Escape Survey: Connecting Time-dependent [O III] and [O II] Line Emission with Lyman Continuum Escape Fraction in Simulations of Galaxy Formation

    2020

  • RELICS: Spectroscopy of gravitationally-lensed z ≃ 2 reionization-era analogs and implications for CIII] detections at z \ 6

    2020

  • The Detection of [O III] \ensuremath{\lambda}4363 in a Lensed, Dwarf Galaxy at z = 2.59: Testing Metallicity Indicators and Scaling Relations at High Redshift and Low Mass

    2019

  • Unveiling the Phase Transition of the Universe During the Reionization Epoch with Lyman-alpha

    2019

  • Astro2020 Science White Paper: Spatially Resolved UV Nebular Diagnostics in Star-Forming Galaxies

    2019

  • MMT/MMIRS spectroscopy of z = 1.3 - 2.4 extreme [O III] emitters: implications for galaxies in the reionization era

    2019

  • RELICS: A Very Large ($\theta_E\sim40 $) Cluster Lens -- RXC J0032.1+1808

    2019

  • RELICS: Reionization Lensing Cluster Survey

    2019

  • RELICS: Strong Lensing Analysis of MACS J0417.5-1154 and Predictions for Observing the Magnified High-redshift Universe with JWST

    2019

  • Searches after Gravitational Waves Using ARizona Observatories (SAGUARO): System Overview and First Results from Advanced LIGO/Virgo\textquoterights Third Observing Run

    2019

  • RELICS: High-resolution Constraints on the Inner Mass Distribution of the z = 0.83 Merging Cluster RXJ0152.7-1357 from Strong Lensing

    2019

  • Photometric identification and MMT spectroscopy of new extremely metal-poor galaxies: towards a better understanding of young stellar populations at low metallicity

    2019

  • Extremely metal-poor galaxies with HST/COS: laboratories for models of low-metallicity massive stars and high-redshift galaxies

    2019

  • The Ionizing Photon Production Efficiency ($\xi_ion$) Of Lensed Dwarf Galaxies At $z \sim 2 $

    2019

  • UV Diagnostics of Galaxies from the Peak of Star-Formation to the Epoch of Reionization

    2019

  • A bright-lensed galaxy at z = 5.4 with strong Ly $\alpha$ emission

    2018

  • The VANDELS ESO public spectroscopic survey: Observations and first data release

    2018

  • The JWST Extragalactic Mock Catalog: Modeling galaxy populations from the UV through the near-IR over thirteen billion years of cosmic history

    2018

  • RELICS: Strong Lensing Analysis of the Galaxy Clusters Abell S295, Abell 697, MACS J0025.4-1222, and MACS J0159.8-0849

    2018

  • Mapping UV Properties Throughout the Cosmic Horseshoe: Lessons from VLT-MUSE

    2018

  • RELICS: A Candidate z \tilde 10 Galaxy Strongly Lensed into a Spatially Resolved Arc

    2018

  • The GMT-consortium large earth finder (G-CLEF): an optical echelle spectrograph for the Giant Magellan Telescope (GMT)

    2018

  • MMT/MMIRS spectroscopy of $z=1.3-2.4$ extreme [OIII] emitters: Implications for galaxies in the reionization-era

    2018

  • The JWST Extragalactic Mock Catalog: Modeling Galaxy Populations from the UV through the Near-IR over 13 Billion Years of Cosmic History

    2018

  • The role of galaxies and AGN in reionizing the IGM - I. Keck spectroscopy of 5 $\lt$ z $\lt$ 7 galaxies in the QSO field J1148+5251

    2018

  • Dust in the Wind: Composition and Kinematics of Galaxy Outflows at the Peak Epoch of Star Formation

    2018

  • The Redshift Evolution of Rest-UV Spectroscopic Properties in Lyman-break Galaxies at z \tilde 2-4

    2018

  • The VANDELS ESO public spectroscopic survey

    2018

  • The Lyman Continuum Escape Survey: Ionizing Radiation from [O III]-Strong Sources at a Redshift of 3.1

    2018

  • Physical properties and H-ionizing-photon production rates of extreme nearby star-forming regions

    2018

  • A Candidate $z\sim10$ Galaxy Strongly Lensed into a Spatially Resolved Arc

    2018

  • Spectroscopic constraints on UV metal line emission at z \sime 6-9: the nature of Ly$\alpha$ emitting galaxies in the reionization era

    2018

  • RELICS: A Strong Lens Model for SPT-CLJ0615-5746, a z = 0.972 Cluster

    2018

  • RELICS: Strong-lensing analysis of the massive clusters MACS J0308.9+2645 and PLCK G171.9-40.7

    2018

  • Constraining C III] Emission in a Sample of Five Luminous z = 5.7 Galaxies

    2017

  • A bright lensed galaxy at $z=5.4$ with strong Ly$\alpha$ emission

    2017

  • High-redshift Galaxies and Black Holes Detectable with the JWST: A Population Synthesis Model from Infrared to X-Rays

    2017

  • The Reionization Lensing Cluster Survey (RELICS) and the Brightest High-z Galaxies

    2017

  • Ly$\alpha$ and C III] emission in z = 7-9 Galaxies: accelerated reionization around luminous star-forming systems?

    2017

  • Ultraviolet spectra of extreme nearby star-forming regions - approaching a local reference sample for JWST

    2017

  • RELICS: Strong Lens Models for Five Galaxy Clusters From the Reionization Lensing Cluster Survey

    2017

  • Evidence for a Hard Ionizing Spectrum from a z = 6.11 Stellar Population

    2017

  • The ionization properties of extreme nearby star-forming regions

    2017

  • Blue diffuse dwarf galaxies: a clearer picture

    2017

  • Probing the Peak Epoch of Cosmic Star Formation (1$\lt$z$\lt$3) with Faint Star-forming Galaxies Behind the Lensing Clusters: UV Luminosity Function and the Dust Attenuation

    2016

  • UV Spectral Slope and Dust Attenuation of Faint Star-Forming Galaxies at 1 $\lt$ z $\lt$ 3 Behind the Lensing Cluster A1689

    2015

  • Uncovering blue diffuse dwarf galaxies

    2015

  • Spectroscopic detections of CIII]1909 at z~6-7: A new probe of early star forming galaxies and cosmic reionisation

    2015

  • Mean Halpha+[NII]+[SII] EW Inferred for Star-Forming Galaxies at z=5.1-5.4 Using High-Quality Spitzer/IRAC Photometry

    2015

  • Spectroscopic detection of C IV {$\lambda$}1548 in a galaxy at z = 7.045: implications for the ionizing spectra of reionization-era galaxies

    2015

  • A Pilot Survey for C III] Emission in the Reionization Era: Gravitationally Lensed z {\tilde} 7-8 Galaxies in the Frontier Fields Cluster Abell 2744

    2015

  • Lyman{$\alpha$} Emission from a Luminous z = 8.68 Galaxy: Implications for Galaxies as Tracers of Cosmic Reionization

    2015

  • A Keck Survey of Gravitationally-Lensed Star-Forming Galaxies: High Spatial Resolution Studies of Kinematics and Metallicity Gradients

    2015

  • LBT/LUCI Spectroscopic Observations of z{\sime}7 Galaxies

    2015

  • Spectroscopic detections of C III] {$\lambda$}1909 {\AA} at z {\sime} 6-7: a new probe of early star-forming galaxies and cosmic reionization

    2015

  • RELICS: Discovery of a Probable SN in Galaxy Cluster MACSJ0949.8+1708

    2015

  • VizieR Online Data Catalog: AIMSS Project. I. Compact Stellar Systems (Norris+, 2014)

    2015

  • The Ultraviolet Frontier and Dwarf Galaxies at 1 $\lt$ z $\lt$ 3

    2015

  • Consequences of bursty star formation on galaxy observables at high redshifts

    2014

  • A Molecular Line Scan in the Hubble Deep Field North

    2014

  • Ultra-faint Ultraviolet Galaxies at z \~{} 2 behind the Lensing Cluster A1689: The Luminosity Function, Dust Extinction, and Star Formation Rate Density

    2014

  • HD 106906 b: A Planetary-mass Companion Outside a Massive Debris Disk

    2014

  • Toward a precise determination of the neutral gas fraction at 7 using the Lyman alpha fraction test

    2014

  • The Hawk-I UDS and GOODS Survey (HUGS): Survey design and deep K-band number counts

    2014

  • Ultraviolet emission lines in young low-mass galaxies at z {\sime} 2: physical properties and implications for studies at z $\gt$ 7

    2014

  • Ultraviolet emission lines in young low-mass galaxies at z ~= 2: physical properties and implications for studies at z 7

    2014

  • Line-emitting Galaxies beyond a Redshift of 7: An Improved Method for Estimating the Evolving Neutrality of the Intergalactic Medium

    2014

  • Accounting for Cosmic Variance in Studies of Gravitationally Lensed High-redshift Galaxies in the Hubble Frontier Field Clusters

    2014

  • Ultra-Faint Ultraviolet Galaxies at the Epoch of Peak Star Formation 1 $\lt$ z $\lt$ 3

    2014

  • When VLT Meets HST: The HUGS Survey

    2014

  • Properties of z ~ 3-6 Lyman break galaxies. II. Impact of nebular emission at high redshift

    2014

  • VizieR Online Data Catalog: The Hawk-I UDS and GOODS Survey (HUGS) (Fontana+, 2014)

    2014

  • A Molecular Line Scan in the Hubble Deep Field North: Constraints on the CO Luminosity Function and the Cosmic H$_2$ Density

    2014

  • The Ultraviolet Frontier: Deep near-UV imaging of the Hubble Frontier Fields

    2014

  • The Deepest HST Near-UV Image and the Ultraviolet Luminosity Function at z=2

    2013

  • The CASSOWARY spectroscopy survey: a new sample of gravitationally lensed galaxies in SDSS

    2013

  • Evolution of the Sizes of Galaxies over 7 lt z lt 12 Revealed by the 2012 Hubble Ultra Deep Field Campaign

    2013

  • Keck Spectroscopy of 3 $\lt$ z $\lt$ 7 Faint Lyman Break Galaxies: The Importance of Nebular Emission in Understanding the Specific Star Formation Rate and Stellar Mass Density

    2013

  • A new multifield determination of the galaxy luminosity function at z = 7-9 incorporating the 2012 Hubble Ultra-Deep Field imaging

    2013

  • WFIRST Science with a Probe Class Mission

    2013

  • New Constraints on Cosmic Reionization from the 2012 Hubble Ultra Deep Field Campaign

    2013

  • Keck Spectroscopy of Gravitationally Lensed z \~{}= 4 Galaxies: Improved Constraints on the Escape Fraction of Ionizing Photons

    2013

  • The Abundance of Star-forming Galaxies in the Redshift Range 8.5-12: New Results from the 2012 Hubble Ultra Deep Field Campaign

    2013

  • The 2012 Hubble Ultra Deep Field (UDF12): Observational Overview

    2013

  • Contamination of Broadband Photometry by Nebular Emission in High-redshift Galaxies: Investigations with Keck's MOSFIRE Near-infrared Spectrograph

    2013

  • Deep UV HST Imaging in Abel 1689

    2013

  • The UV Luminosity Function of Star-forming Galaxies via Dropout Selection at Redshifts z \~{} 7 and 8 from the 2012 Ultra Deep Field Campaign

    2013

  • Deep HST Ultraviolet Imaging in the Field and in Lensing Clusters

    2013

  • The UV continua and inferred stellar populations of galaxies at z sime 7-9 revealed by the Hubble Ultra-Deep Field 2012 campaign

    2013

  • Deep LBT/LUCI Spectroscopy of an Ly{$\alpha$} Emitter Candidate at z \~{}= 7.7

    2013

  • The intense starburst HDF thinsp850.1 in a galaxy overdensity at z thinsp ap thinsp5.2 in the Hubble Deep Field

    2012

  • Keck Spectroscopy of Faint 3 $\lt$ z $\lt$ 7 Lyman Break Galaxies. III. The Mean Ultraviolet Spectrum at z \~{}= 4

    2012

  • Probing Reionization with Deep Spectroscopy

    2012

  • The Ultraviolet Spectra of Lyman Break Galaxies at z=4

    2012

  • Astronomy: Searching for the cosmic dawn

    2012

  • A remarkably high fraction of strong Ly{$\alpha$} emitters amongst luminous redshift 6.0 $\lt$ z $\lt$ 6.5 Lyman-break galaxies in the UKIDSS Ultra-Deep Survey

    2012

  • A critical analysis of the ultraviolet continuum slopes ({$\beta$}) of high-redshift galaxies: no evidence (yet) for extreme stellar populations at z $\gt$ 6

    2012

  • The intense starburst HDF{\thinsp}850.1 in a galaxy overdensity at z{\thinsp}{\ap}{\thinsp}5.2 in the Hubble Deep Field

    2012

  • Keck Spectroscopy of Faint 3 $\lt$ z $\lt$ 8 Lyman Break Galaxies: Evidence for a Declining Fraction of Emission Line Sources in the Redshift Range 6 $\lt$ z $\lt$ 8

    2012

  • VizieR Online Data Catalog: Robust sample of galaxies at 6.0$\lt$z$\lt$8.7 (Mclure+, 2011)

    2012

  • Discovery of a possibly old galaxy at z= 6.027, multiply imaged by the massive cluster Abell 383

    2011

  • LBG properties from z\~{}3 to z\~{}6

    2011

  • LBGs properties from z{\tilde}3 to z{\tilde}6

    2011

  • A robust sample of galaxies at redshifts 6.0$\lt$z$\lt$8.7: stellar populations, star formation rates and stellar masses

    2011

  • Keck Spectroscopy of Faint 3$\gt$z$\gt$7 Lyman Break Galaxies: A High Fraction of Line Emitters at Redshift Six

    2011

  • Assessing the redshift evolution of massive black holes and their hosts

    2011

  • On Ly{$\alpha$} emission in z \~{} 3-6 UV-selected galaxies

    2011

  • The emission line properties of gravitationally lensed 1.5 $\lt$ z $\lt$ 5 galaxies

    2011

  • Early star-forming galaxies and the reionization of the Universe

    2010

  • Intense star formation within resolved compact regions in a galaxy at z = 2.3

    2010

  • LoCuSS: connecting the dominance and shape of brightest cluster galaxies with the assembly history of massive clusters

    2010

  • Resolved spectroscopy of gravitationally lensed galaxies: recovering coherent velocity fields in subluminous z \~{} 2-3 galaxies

    2010

  • The contribution of high-redshift galaxies to cosmic reionization: new results from deep WFC3 imaging of the Hubble Ultra Deep Field

    2010

  • The Lya fraction in z=3-7 Lyman break galaxies: new insight into reionization

    2010

  • Probing \~{}L$_{*}$ Lyman-break galaxies at z \~{} 7 in GOODS-South with WFC3 on Hubble Space Telescope

    2010

  • Keck spectroscopy of faint 3 $\lt$ z $\lt$ 7 Lyman break galaxies - I. New constraints on cosmic reionization from the luminosity and redshift-dependent fraction of Lyman {$\alpha$} emission

    2010

  • Galaxies at z = 6-9 from the WFC3/IR imaging of the Hubble Ultra Deep Field

    2010

  • A study of interstellar gas and stars in the gravitationally lensed galaxy `the Cosmic Eye' from rest-frame ultraviolet spectroscopy

    2010

  • Detection of Far-Infrared and Polycyclic Aromatic Hydrocarbon Emission from the Cosmic Eye: Probing the Dust and Star Formation of Lyman Break Galaxies

    2009

  • The Evolutionary History of Lyman Break Galaxies Between Redshift 4 and 6: Observing Successive Generations of Massive Galaxies in Formation

    2009

  • A spatially resolved map of the kinematics, star formation and stellar mass assembly in a star-forming galaxy at z = 4.9

    2009

  • The Spitzer View of Lensed Lyman Break Galaxies: Testing Star Formation Diagnostics at High Redshift

    2009

  • A Hubble and Spitzer Space Telescope Survey for Gravitationally Lensed Galaxies: Further Evidence for a Significant Population of Low-Luminosity Galaxies beyond z = 7

    2008

  • The formation and assembly of a typical star-forming galaxy at redshift z\~{}3

    2008

  • Strong lensing in Abell 1703: constraints on the slope of the inner dark matter distribution

    2008

  • Four faint T dwarfs from the UKIRT Infrared Deep Sky Survey (UKIDSS) Southern Stripe

    2008

  • The Case for an Abundant Population of Feeble Galaxies at z{\gsim} 8

    2008

  • Galaxies in the First Billion Years: Implications for Reionization and the Star Formation History at z$\gt$6

    2007

  • A New Measurement of the Stellar Mass Density at z\~{}5: Implications for the Sources of Cosmic Reionization

    2007

  • New constraints on the co-moving star formation rate in the redshift interval 6$\lt$z$\lt$10

    2007

  • A Very Bright, Highly Magnified Lyman Break Galaxy at z = 3.07

    2007

  • Molecular Outflows and a Mid-Infrared Census of the Massive Star Formation Region Associated with IRAS 18507+0121

    2007

  • Star Forming Galaxies at z{\ap} 6 and Reionization

    2007

  • The Case for an Abundant Population of Feeble Lyman-alpha Emitting Galaxies at z$\gt$8

    2007

  • An Empirically Calibrated Model for Interpreting the Evolution of Galaxies during the Reionization Era

    2007

  • The Effect Of Inhomogeneous Reionization On The Spectral Properties Of Massive Galaxies

    2007

  • The stellar mass density at z \~{} 6 from Spitzer imaging of i'-drop galaxies

    2007

  • A Keck Survey for Gravitationally Lensed Ly{$\alpha$} Emitters in the Redshift Range 8.5$\lt$z$\lt$10.4: New Constraints on the Contribution of Low-Luminosity Sources to Cosmic Reionization

    2007

  • A Statistical Study of Multiply Imaged Systems in the Lensing Cluster Abell 68

    2007

  • Galaxies at high redshift and reionization

    2007

  • VLBA Observations of G5.89-0.39: OH Masers and Magnetic Field Structure

    2007

  • Surveys for Lensed Lyman Alpha Galaxies at z$\gt$7

    2007

  • Galaxies in the first billion years: implications for re-ionization and the star formation history at z$\gt$6

    2007

  • The case for an abundant population of feeble galaxies at z$\gt$8

    2007

  • Near-Infrared Synthetic Images of Protostellar Disks and Envelopes

    2006

  • The Stellar Mass Density in the First Billion Years

    2006

  • New Constraints on the Comoving Star Formation Rate in the Redshift Interval 6 $\lt$z$\lt$10

    2006

  • A Comprehensive Study of Infrared OH Prompt Emission in Two Comets. I. Observations and Effective g-Factors

    2006

  • Searching for the sources responsible for cosmic reionization: Probing the redshift range 7 $\lt$ z $\lt$ 10 and beyond

    2006

  • Galaxies under the cosmic microscope: resolved spectroscopy and new constraints on the z = 1 Tully-Fisher relation

    2006

  • Spitzer and Hubble Space Telescope Constraints on the Physical Properties of the z\~{}7 Galaxy Strongly Lensed by A2218

    2005

  • Quantitative Analysis of the Infrared OH Prompt Emission in Comets: Beyond the Multiplet Near 3046 cm$^{-1}$

    2005

  • Evidence for a Massive Poststarburst Galaxy at z\~{}6.5

    2005

  • Jets and Herbig-Haro Objects in the {$\rho$} Ophiuchi Embedded Cluster

    2003

  • Clustered Star Formation in W75 N

    2003

  • Near-IR Model Images of Disks and Envelopes

    2002

  • W75N: Molecular Outflows {\amp} IR Emission from a cluster of early B stars

    2001

  • Radio Observations of IXOs in NGC 5204 and NGC 4150

    2001

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