KMap
Chris Impey is a University Distinguished Professor. For 17 years he was Deputy Head of the Astronomy Department at the University of Arizona, and he is currently Associate Dean of the College of Science. He has over 180 refereed publications and 60 conference proceedings, and his work has been supported by $20 million in grants from NASA and the NSF. As a professor, he has won eleven teaching awards, and has been heavily involved in curriculum and instructional technology development. Chris Impey is a past Vice President of the American Astronomical Society. He has also been an NSF Distinguished Teaching Scholar, a Phi Beta Kappa Visiting Scholar, and the Carnegie Council on Teaching’s Arizona Professor of the Year. He was a co-chair of the Education and Public Outreach Study Group for the recent Decadal Survey of the National Academy of Sciences. In 2009, he was elected a Fellow of the American Association for the Advancement of Science, and in 2014 he was selected as a Howard Hughes Medical Institute Professor.   Chris Impey aims to convey the excitement of astronomy in as many ways as possible to a large public audience. He gives 20 public talks a year, to audiences as large as 4000 and as varied as NASA engineers, first-graders, and Buddhist monks. He has written over forty popular articles on cosmology and astrobiology and authored two introductory textbooks. His has published seven popular science books: The Living Cosmos (2007, Random House), How It Ends (2010, Norton), How It Began (2012, Norton), Talking About Life (2010, Cambridge), Dreams of Other Worlds (2013, Princeton), Humble Before the Void (2014, Templeton), and Beyond (2015, Norton). His first novel, Shadow World, was published in 2013. His Teach Astronomy web site has over 5000 visitors a week, and his YouTube lectures and videos have over half a million views. He is currently teaching two Massive Open Online Classes (MOOCs) to over 70,000 people, most of them living outside the United States.  

VOSviewer

Courses
  • BEST
    Beyond the Earth in Space and Time

  • PHAT
    Philosophy and History of Astronomical Thought

  • IOP
    Introduction to the Orbital Perspective

  • TPU
    The Physical Universe

Grants
  • Funding agency logo
    A Machine Learning Approach to Improve Students Scientific Reasoning and Writing

    Principal Investigator (PI)

    2021

    $299.2K
    Active
  • Funding agency logo
    Exploring the Universe in 3D

    Principal Investigator (PI)

    2020

    $50.0K
    Active
  • Funding agency logo
    Investigating the Landscape of Undergraduate Science Literacy

    Principal Investigator (PI)

    2013

    $190.4K
  • Funding agency logo
    Humble Before the Void: Teaching Cosmology to Buddhist Monks

    Principal Investigator (PI)

    2011

    $44.5K
  • Funding agency logo
    The California-Arizona Minority Partnership for Astronomy Research and Education (CAMPARE)

    Principal Investigator (PI)

    2009

    $315.5K
  • Funding agency logo
    Probing the Limits of Nuclear Activity in Cosmos

    Principal Investigator (PI)

    2009

    $245.2K
  • Funding agency logo
    Doctoral Dissertation Research: International: Fueling of Faint Galactic Nuclei: Obscured or Intrinsically Weak.

    Principal Investigator (PI)

    2009

    $12.4K
  • Funding agency logo
    Dreams and Other Worlds: NASA and the Vision of Space

    Principal Investigator (PI)

    2008

    $246.2K
  • Funding agency logo
    Community of Astronomy Teaching Scholars (CATS) - National Implementation Program for Learner-Centered Astronomy Teaching

    Principal Investigator (PI)

    2007

    $2.0M
News
  • UArizona Offers Free and Discounted Programs to Meet Needs of New Learners

    2020

  • Best in Class: Grads Saving, Improving Lives

    2017

  • NASA Astronaut Ron Garan to Lead New UA Online Class

    2017

  • New Program at UA Welcomes Community Science Scholars

    2017

  • Impey Named Associate Dean of College of Science

    2016

  • Science City: State's Largest's STEM Event

    2016

  • UA to Launch First-of-Its-Kind Online Science Academy

    2016

  • Classroom of 11,000 Awaits UA Professor

    2015

  • Science Lecture Series to Explore Life in the Universe

    2015

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

    2015

  • Honoring Our Relationship With Words

    2015

  • UA Leads the Charge on STEM Reform

    2015

  • Childhood Stories That Never Lose Their Magic

    2014

  • More Than 100K People Expected on Campus for Tucson Festival of Books

    2014

  • UA's Impey Given $1M Grant to Improve Science Education for Undergrads

    2014

  • The Universe in the Middle of Nowhere

    2013

  • Encountering Aliens: New UA Astrobiology Book Asks the Big Questions

    2013

  • More than 4,400 Taking UA Astronomy Class Online

    2013

  • Springtime Experiences Abound at Mount Lemmon SkyCenter

    2011

  • UA Science Lecture Series Reaches Toward Our Cosmic Origins

    2011

  • Happening This Month

    2011

  • In Honor of Humanities

    2009

  • AAAS Names Nine From UA to Fellows

    2009

  • SEDS Students Host SpaceVision 2009 Conference at UA

    2009

  • NSF Grant Helping UA to Transform Astronomy Education

    2008

  • Astronomical Society of the Pacific Honors UA Astronomer for Excellent Teaching

    2008

  • Biosphere 2 Hosts Fall Lecture Series

    2008

  • UA Faculty Will Present "Astrobiology and the Arts" Sept. 19-20

    2007

  • Public Invited to Join Discussions at Free, Informal Science Cafe

    2007

  • The UA Builds a Campus in Cyberspace

    2007

  • St. Albert Forum Examines Coherence Between Science and Religion

    2006

  • UA Astronomers Laud NASA Decision to Repair and Upgrade Hubble

    2006

  • Distinguished Speakers Will Give "Astrobiology and the Sacred" Public Lectures

    2006

  • Impey Selected as Phi Beta Kappa Visiting Scholar

    2006

  • UA College of Science Announces 2005 Galileo Circle Fellows

    2005

  • Arizona Regents Approve UA Astrobiology Center

    2005

  • Ayala Will Lecture on Human Biological, Theological Evolution

    2005

  • Flandrau to Celebrate Hubble Birthday

    2005

  • Science as Art

    2004

  • Faculty Win Grant for 'Astrobiology and the Sacred' Project

    2004

  • Faculty Awards 2004: Chris Impey's Teaching Exudes Energy of the Cosmos

    2004

  • Faculty Community Lecture Series Kicks Off With Science Outreach

    2004

  • Meet the Finalists for VP Instruction, VP Academic Affairs

    2003

  • UA Astronomers Use MMT to Detect the Widest Lensed Quasar

    2003

  • Astronomer Chris Impey Awarded NSF's Highest Honor for Teaching and Research

    2002

  • Year in Review 2002: Incredible Science

    2002

  • Faculty Senate Election Leaves Seats Unfilled

    2002

  • UA Inducts Regents', University Distinguished Professors for 2001

    2001

  • Provost's General Education Teaching Award: Fleming's Genuine Interest, Love of Teaching Takes Him to Top of the Class

    2000

  • University Distinguished Professor 2000: Students Enthralled by Impey's Excitement for Astronomy

    2000

  • Spotlight on Teaching: Impey Integrating Internet Tools into the Curriculum

    2000

  • Hancock Elected Vice Chair of Faculty

    2000

  • Education over the Web: What's in it for Us?

    2000

Publications (212)
Recent
  • The Design and Delivery of an Astrobiology Massive Open Online Class

    2023

  • StellarScape: An Immersive Multimedia Performance Inspired by the Life of a Star

    2023

  • Life beyond Earth: How will it first be detected?

    2022

  • Astrobiology for Education and Outreach: Three Immersive Projects

    2022

  • Future space missions and human enhancement: Medical and ethical challenges

    2021

  • MOOCS and 100 Days of COVID: Enrollment surges in massive open online astronomy classes during the coronavirus pandemic

    2021

  • Science and Faith Off-Earth

    2021

  • Visions of a Martian future

    2020

  • Higher Education Online and the Developing World

    2020

  • Relationship Between Learners’ Motivation and Course Engagement in an Astronomy Massive Open Online Class

    2019

  • Online Astronomy for Formal and Informal Learners

    2019

  • Tibetan Monks Meet Science near the Roof of the World

    2019

  • Human Enhancement and Mars Settlement – Biological Necessity or Science Fiction?

    2019

  • Online Resources for Astronomy Education and Outreach

    2019

  • Pluto Redux

    2019

  • The Development and Validation of the Planet Formation Concept Inventory (PFCI)

    2019

  • The Ultraviolet Detection of Diffuse Gas in Galaxy Groups

    2019

  • Mars and Beyond: The Feasibility of Living in the Solar System, in The Human Factor

    2019

  • MOOC Learners’ Motivation and Course Performance: Preliminary Study

    2019

  • Teach Astronomy: Online Resources and New Features

    2019

  • New Practical Research Volumes for Astronomy Education

    2019

  • VizieR Online Data Catalog: HST/COS UV obs. of low-z SDSS galaxy groups

    2019

  • Our Future Off-Earth and the Road to the Stars

    2018

  • Linking Introductory Astronomy Students' Basic Science Knowledge, Beliefs, Attitudes, Sources of Information, and Information Literacy

    2018

  • Finding the Time: Exploring a New Perspective on Students’ Perceptions of Cosmological Time and Efforts to Improve Temporal Frameworks in Astronomy

    2018

  • Visualizing the Universe – the Intersection of Astronomy and Art

    2018

  • Bringing the Universe to the World

    2018

  • Online Astronomy for Formal and Informal Learners, in International Symposium on Education in Astronomy and Astrobiology

    2018

  • Evaluation of Naïve Bayes and Support Vector Machines for Wikipedia

    2018

  • A Survey and Analysis of College Students’ Understanding of Planet Formation Before Instruction

    2018

  • Science Under Threat: Communicating Astronomy in the Age of Misinformation

    2018

  • Innovative Web Site for Astronomy Outreach

    2018

  • A Website for Astronomy Education and Outreach

    2017

  • Twenty Seven Years of Tracking Undergraduate Science Knowledge and Beliefs

    2017

  • Insights About Large-Scale Online Peer Assessment from an Analysis of an Astronomy MOOC

    2017

  • Bringing the Universe to the World: Lessons Learned from a Massive Open Online Class in Astronomy, Communicating Astronomy with the Public Journal

    2016

  • UBVRIz Light Curves of 51 Type II Supernovae

    2016

  • Teach Astronomy – A Comprehensive Online Astronomy Education and Outreach Resource, International Journal for Innovation Education and Research

    2016

  • Astronomy for Astronomical Numbers: A Worldwide Massive Open Online Class

    2015

  • The CAMPARE Program:A New Model Promoting Minority Participation in Astronomy Research and Education

    2014

  • Exploring the Potential of the Massive, Open, Online Astronomy Course

    2014

  • Findings from Five Years Investigating Science Literacy and Where Students Get their Information about Science

    2014

  • Spectral energy distributions of type 1 AGN in XMM-COSMOS - II. Shape evolution

    2014

  • The Collaboration of Astronomy Teaching Scholars (CATS) - Reporting from the Nationion rsquos Largest College-Level, Astronomy Education Research Initiative

    2014

  • Investigating Science Literacy: Students' Conceptions of Radiation

    2014

  • The Inspiration of Astronomical Phenomena

    2014

  • An Ongoing Investigation of Science Literacy: Results of a 22-Year Study Probing Students' Knowledge and Attitude Towards Science

    2013

  • Investigating What Undergraduate Students Know About Science: Results from Complementary Strategies to Code Open-Ended Responses

    2013

  • A new online astronomy resource for education and outreach

    2013

  • A quasar-galaxy mixing diagram: Quasar spectral energy distribution shapes in the optical to near-infrared

    2013

  • Where Students Get Their Information about Science and Technology and Assessment of That Knowledge

    2013

  • Galaxy Redshifts: From Dozens to Millions

    2013

  • The California-Arizona Minority Partnership for Astronomy Research and Education (CAMPARE): A New Model for Promoting Minority Participation in Astronomy Research and Education

    2013

  • Steps toward unveiling the true population of active galactic nuclei: Photometric characterization of active galactic nuclei in cosmos

    2013

  • Uncovering What Our Students Really Think about Science and Society mdashAre We Doomed?

    2013

  • Teach Astronomy: An Online Resource for Introductory Astronomy Courses and Informal Learners

    2013

  • The first thousand exoplanets: Twenty years of excitement and discovery

    2013

  • TeachAstronomy.com - Digitizing Astronomy Resources

    2013

  • Using the Teach Astronomy Website to Enrich Introductory Astronomy Classes

    2013

  • Investigating Where Students Get Their Information About Science

    2013

  • The Chandra COSMOS Survey. III. Optical and infrared identification of X-ray point sources

    2012

  • Teach Astronomy: An Online Resource for General Education and Informal Learning

    2012

  • Evolution of the quasar luminosity function over 3 z 5 in the cosmos survey field

    2012

  • Calculating Catastrophe by Gordon Woo

    2012

  • Identifying Luminous AGN in Deep Surveys: Revised IRAC Selection Criteria

    2012

  • A Long-Term Study of Science Literacy and Attitudes Towards Science: Exploring Changes Among College Undergraduate and Public Understanding over Twenty-Two Years

    2012

  • Fe K emission from active galaxies in the COSMOS field

    2012

  • Steps Toward Unveiling the True Population of AGN: Photometric Selection of Broad-Line AGN

    2012

  • Astrobiology and society: Building an interdisciplinary research community

    2012

  • Bolometric luminosities and Eddington ratios of X-ray selected active galactic nuclei in the XMM-COSMOS survey

    2012

  • The Center for Astronomy Education (CAE) Collaboration of Astronomy Teaching Scholars (CATS) Program: A Year-Four Research Update

    2012

  • Identifying luminous active galactic nuclei in deep surveys: Revised IRAC selection criteria

    2012

  • A Long-Term Study of Science Literacy and Attitudes Towards Science: Comparing Survey Responses of Undergraduates to Scientists

    2012

  • Spectral energy distributions of type 1 active galactic nuclei in the Cosmos survey. I. the XMM-Cosmos sample

    2012

  • Teach Astronomy: An Online Textbook for Introductory Astronomy Courses and Resources for Informal Learners

    2012

  • Spectropolarimetric evidence for radiatively inefficient accretion in an optically dull active galaxy

    2011

  • Black hole accretion and host galaxies of obscured quasars in XMM-COSMOS

    2011

  • Secular evolution and A non-evolving black-hole-to-galaxy mass ratio in the last 7Gyr

    2011

  • Astrology beliefs among undergraduate students.

    2011

  • A twenty-year survey of science literacy among college undergraduates.

    2011

  • Accretion rate and the physical nature of unobscured active galaxies

    2011

  • Dissecting photometric redshift for active galactic nucleus using XMM- and Chandra-cosmos samples

    2011

  • The bulk of the black hole growth since z ∼ 1 occurs in a secular universe: No major merger-AGN connection

    2011

  • Detailed decomposition of galaxy images. II. beyond axisymmetric models

    2010

  • The living cosmos: A fabric that binds art and science

    2010

  • A runaway black hole in cosmos: Gravitational wave or slingshot recoil?

    2010

  • Ultraluminous X-ray sources out to z ∼ 0.3 in the COSMOS field

    2010

  • Erratum: Cosmic evolution of radio selected active galactic nuclei in the cosmos field (The Astrophysical Journal (2009) 696 (24))

    2010

  • AGN and host galaxies in the COSMOS survey

    2010

  • Hot-dust-poor type 1 active galactic nuclei in the COSMOS survey

    2010

  • On the cosmic evolution of the scaling relations between black holes and their host galaxies: Broad-line active galactic nuclei in the zCosmos survey

    2010

  • The XMM-newton wide-field survey in the cosmos field (XMM-COSMOS): Demography and multiwavelength properties of obscured and unobscured luminous active galactic nuclei

    2010

  • The nature of optically dull active galactic nuclei in cosmos

    2009

  • The cosmos active galactic nucleus spectroscopic survey. I. XMM-newton counterparts

    2009

  • Massive galaxies in cosmos: Evolution of black hole versus bulge mass but not versus total stellar mass over the last 9 Gyr?

    2009

  • Active galactic nucleus host galaxy morphologies in COSMOS

    2009

  • Chasing highly obscured QSOs in the cosmos field

    2009

  • Hubble space telescope/advanced camera for surveys morphology of lyα emitters at redshift 5.7 in the cosmos field

    2009

  • The spatial clustering of X-ray selected AGN in the XMM-COSMOS field

    2009

  • Photometric redshift and classification for the XMM-cosmos sources

    2009

  • The Chandra COSMOS Survey. I. overview and point source catalog

    2009

  • Photometric properties of Lyα emitters at z ≈ 4.86 in the cosmos 2 square degree field

    2009

  • Cosmic evolution of radio selected active galactic nuclei in the cosmos field

    2009

  • Optical selection of faint active galactic nuclei in the cosmos field

    2008

  • The flux auto- and cross-correlation of the Lyα forest. I. Spectroscopy of QSO pairs with arcminute separations and similar redshifts

    2008

  • The flux auto- and cross-correlation of the Lyα forest. II. Modeling anisotropies with cosmological hydrodynamic simulations

    2008

  • The Hα luminosity function and star formation rate at z ≈ 0.24 in the COSMOS 2 square degree field

    2008

  • PC 1643+4631a, B: The lyman-α forest at the edge of coherence

    2008

  • The Cosmic Evolution Survey (COSMOS): Subaru observations of the HST cosmos field

    2007

  • The XMM-Newton wide-field survey in the COSMOS field. III. Optical identification and multiwavelength properties of a large sample of X-ray-selected sources

    2007

  • The XMM-Newton wide-field survey in the COSMOS field. IV. X-ray spectral properties of active galactic nuclei

    2007

  • The first release COSMOS optical and near-IR data and catalog

    2007

  • The Cosmic Evolution Survey (COSMOS): Overview

    2007

  • A wide-angle tail radio galaxy in the COSMOS field: Evidence for cluster formation

    2007

  • 21 cm Synthesis observations of VIRGOHI 21 - A possible dark galaxy in the virgo cluster

    2007

  • Cosmos: Hubble space telescope observations

    2007

  • A potential galaxy threshing system in the COSMOS field

    2007

  • The [O II] λ3727 luminosity function and star formation rate at z ≈ 1.2 in the COSMOS 2 square degree field and the Subaru deep field

    2007

  • zCOSMOS: A large VLT/VIMOS redshift survey covering 0 z 3 in the COSMOS field sup 1 /sup

    2007

  • Magellan spectroscopy of AGN candidates in the COSMOS field

    2007

  • The VLA-COSMOS survey II. Source catalog of the large project

    2007

  • Dim baryons in the cosmic web

    2007

  • S-COSMOS: The Spitzer legacy survey of the Hubble Space Telescope ACS 2 deg sup 2 /sup COSMOS field I: Survey strategy and first analysis

    2007

  • The XMM-Newton wide-field survey in the COSMOS field: Statistical properties of clusters of galaxies

    2007

  • Lensed quasar hosts

    2006

  • Probing the coevolution of supermassive black holes and galaxies using gravitationally lensed quasar hosts

    2006

  • Lyα absorption in the quasar triplet Q0107-025A, Q0107-025B, and Q0107-0232: Data calibration and line selection

    2006

  • A survey of AGN and supermassive black holes in the COSMOS Survey

    2006

  • Probing the coevolution of supermassive black holes and quasar host galaxies

    2006

  • Borders in astronomy: Facing the end

    2006

  • Quasars in the COSMOS field

    2006

  • The VLA-cosmos survey. I. Radio identifications from the pilot project

    2004

  • Quasars as absorption probes of the J0053+1234 region

    2004

  • The far-infrared spectral energy distributions of X-ray-selected active galaxies

    2003

  • The universe in a nutshell

    2002

  • LBQS 0015+0239: A binary quasar with small angular separation

    2002

  • H I properties of low-luminosity star-forming galaxies in the KPNO international spectroscopic survey

    2002

  • Erratum: Hubble space telescope observations of 10 two-image gravitational lenses (Astrophysical Journal (2002) 536 (584))

    2002

  • PKS 1830-211: A face-on spiral galaxy lens

    2002

  • Detailed structural decomposition of galaxy images

    2002

  • Comparing simulations and observations of the Lyα forest. I. Methodology

    2002

  • First observations of the second-brightest quasar

    2001

  • Radio-quiet quasars in the direction of the northern Hubble Deep Field

    2001

  • Observations of Lyα absorption in a triple quasar system

    2001

  • High and low surface brightness galaxies in the local universe. V. Optical and H I properties

    2001

  • High and low surface brightness galaxies in the local universe. IV. Optical and 21 centimeter spectroscopy

    2001

  • Quasar-galaxy correlations: A detection of magnification bias

    2001

  • The First Bright Quasar Survey. III. The South Galactic cap

    2001

  • WFPC2 imaging of quasar environments: A comparison of large bright quasar survey and Hubble Space Telescope archive quasars 1

    2001

  • B1359 + 154: A six-image lens produced by a z ≃ 1 compact group of galaxies

    2001

  • Multifrequency analysis of the new wide-separation gravitational lens candidate RX J0921 + 4529

    2001

  • The fundamental plane of gravitational lens galaxies and the evolution of early-type galaxies in low-density environments

    2000

  • The host galaxy of the lensed quasar Q0957 + 561

    2000

  • Hubble Space Telescope observations of 10 two-image gravitational lenses

    2000

  • Structural characteristics of faint galaxies serendipitously discovered with the Hubble Space Telescope WFPC2

    2000

  • PMN J1838-3427: A new gravitationally lensed quasar

    2000

  • The infrared Einstein ring in the gravitational lens MG J1131 + 0456 and the death of the dusty lens hypothesis

    2000

  • Rapid polarization variability in the BL Lacertae object S5 0716 + 714

    2000

  • The FIRST Bright Quasar Survey. II. 60 nights and 1200 spectra later

    2000

  • A cluster or filament of galaxies at redshift z = 2.5?

    1999

  • Quasars as absorption probes of the hubble deep field 1

    1999

  • A study of Lyα quasar absorbers in the nearby universe

    1999

  • The quasar pair Q1634+267A,B and the binary QSO versus dark lens hypotheses

    1999

  • Kinematics and neutral hydrogen properties of the giant low surface brightness galaxy UGC 2936

    1999

  • Hubble Space Telescope WFPC2 imaging of three low surface brightness dwarf elliptical galaxies in the Virgo Cluster

    1999

  • The effect of magnetic fields on γ-ray bursts inferred from multi- wavelength observations of the burst of 23 January 1999

    1999

  • Dust and extinction curves in galaxies with z 0: The interstellar medium of gravitational lens galaxies

    1999

  • Ultraviolet spectroscopy of the quasar pair LB 9605, LB 9612 with the Hubble Space Telescope: Evolution in the size of the Lyα absorbers?

    1998

  • Hubble Space Telescope Wide Field Planetary Camera 2 imaging of UGC 12695: A remarkably unevolved galaxy at low redshift

    1998

  • Small-scale structure in the Lyα forest at high redshift

    1998

  • An infrared Einstein ring in the gravitational lens PG 1115+080

    1998

  • The castles project

    1998

  • Low surface brightness galaxies in the local universe. III. Implications for the field galaxy luminosity function

    1997

  • Additional observations and analysis of the Lyman-α absorption lines toward the QSO Pair Q0107-025A 1,2

    1997

  • Low-surface-brightness galaxies: Hidden galaxies revealed

    1997

  • Bubble space telescope imaging of z ≥ 0.4 quasar host galaxies selected by quasar radio and optical properties

    1997

  • Neutral hydrogen distributions and kinematics of giant low surface brightness disk galaxies

    1997

  • Low surface brightness galaxies

    1997

  • A wide field ccd survey for low surface brightness galaxies. II. Color distributions, stellar populations, and missing baryons

    1997

  • Large-scale structure in the direction of the virgo cluster

    1996

  • Two-point velocity and spatial correlation functions of the C IV absorption systems toward the tololo quasar group: Evidence for superclustering at z ≃ 2 sup 1 /sup

    1996

  • Bubble space telescope observations of the gravitational lens system B1422+231

    1996

  • Low surface brightness galaxies in the local universe. II. Selection effects and completeness of the automated plate measuring 1 survey

    1996

  • Quasars, blazars, and the gamma-ray sky

    1996

  • Spectroscopy of bright quasars with the Hubble Space Telescope and lyman-alpha absorption lines in the redshift range 0.5 z 1.7

    1996

  • The radio properties of optically selected quasars. III. Comparison between optical and x-ray selected samples

    1996

  • Optical spectroscopy and polarization of a new sample of optically bright flat radio spectrum sources

    1996

  • The Einstein Slew Survey sample of BL Lacertae objects

    1996

  • Large size of Lyman-α gas clouds at intermediate redshifts

    1995

  • Properties of the class of giant low surface brightness spiral galaxies

    1995

  • Ultraviolet spectropolarimetry of high-redshift quasars with the hubble space telescope

    1995

  • The mass-to-light ratios of low surface brightness spiral galaxies: Clues from the tully-fisher relation

    1995

  • Common Lyman-alpha absorption toward the quasar pair Q1343+2640A, B: Evidence for large and quiescent clouds

    1994

  • The linear polarization of 3C 345 in the ultraviolet

    1994

  • ROSAT observations of z 3 quasars

    1994

  • The wavelength dependence of polarization of active galaxies and quasars

    1993

  • Energy distributions of radio galaxies

    1993

  • The small scale environment of low surface brightness disk galaxies

    1993

  • The ultraviolet spectra of radio-loud and radio-quiet quasars

    1993

  • Discovery of a third giant low surface brightness disk galaxy

    1993

  • Radio properties of optically selected quasars

    1992

  • Optical polarization of a complete sample of radio sources

    1991

  • Extremely low surface brightness galaxies in the Fornax Cluster: Properties, stability, and luminosity fluctuations

    1991

  • The optical polarization properties of quasars

    1990

  • Infrared studies of elliptical galaxies. II. A radio-selected sample

    1990

  • CO deficiency in LSB galaxies. Clues to their star-formation history

    1990

  • An optical counterpart to the H I cloud in the local supercluster

    1990

  • Discovery of a second giant low surface brightness galaxy: Further confirmation of slowly evolving disk galaxies

    1990

  • IR photometry of flat spectrum radio sources

    1981

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