Print 90
         
Reginald James Dufour
Professor Emeritus
Professor Emeritus of Physics and Astronomy
 
e-mail:rjd@rice.edu
 
  • B.S.(1970) Louisiana State University
  • M.S.(1971) University of Wisconsin at Madison
  • Ph.D.(1974) University of Wisconsin at Madison
 
Primary Department
   Department of Physics and Astronomy
Picture
 
 
Research Areas
 Observational Astrophysics of Nebulae and Galaxies; Ultraviolet and Near-IR Emission-Line Spectroscopy; CNOSi Abundances and Chemical Evolution; Astronomical Image Processing; HII Regions; Planetary Nebulae; Starburst Galaxies.
 

Reginald James Dufour -- Research Statement

 

DR. DUFOUR came to Rice in 1976 following graduate work at Wisconsin and a two-year appointment as a National Research Council Postdoctoral Associate at the NASA Johnson Space Center. His research interests are in the areas of observational astrophysics related to gaseous nebulae and star-forming galaxies. His studies involve imagery and spectroscopy observations in the ultraviolet, optical, and near-infrared spectral regions using a variety of ground-based and space-borne telescopes. Dufour was a guest observer with the IUE satellite for 12 years beginning in 1980, a general observer with the HST since 1990, and a guest investigator with the FUSE satellite since 2001. His current research projects are directed primarily towards UV spectroscopy and high resolution imagery of Galactic and extragalactic HII regions and planetary nebulae, with the aim of studying the chemical evolution of the CNO element group and Si. Toward these ends, he also studies the stellar population and star-forming history of irregular and spiral galaxies, using wide-band CCD imagery.

 
Teaching Areas
 astronomy and astrophysics
 
Selected Publications
 Abstracts
 

Brunner, G. et al. "Mapping the Spatial Distribution of Molecular Hydrogen and PAH Emission in Nearby Galaxies with the Spitzer Infrared Spectrograph." Bulletin of the American Astronomical Society, 39 #4

 
 

Dufour, R. J. et al. "Imagery of Planetary Nebulae in the C III] 1909 Angstrom Emission Line." Bulletin of the American Astronomical Society, 39 #4

 
 

Skinner, J. N. et al. "A Multiwavelength Abundance Analysis of the Halo Planetary Nebbula DdDm-1." Bulletin of the American Astronomical Society, 39 #4

 
 

Skinner, J. N. et al. "A Multiwavelength Abundance Analysis of the Halo Planetary Nebula DdDm-1." Bulletin of the American Astronomical Society, 39 No. 4

 
 

"Spitzer Observations of M33 & M83 and the Hot Star, HII Region Connection."  (2007)

 
 

Dufour, R. J., Henry, R. B. C., Kwitter, K. B., Buckalew, B. A., Moore, B. D., Bohigas, J., Esteban, C. "C III] Imagery of Planetary Nebulae and Extragalactic H II Regions." Bulletin of the AAS, 204 (2004/05) : 74.08.

 
 

Dufour, R. J., Smith, I. A., Liang, E. P., Hardin, L. C., et al. "The Rice University CCD Imager for the AEOS Telescope." Journal of the AAVSO (2005/?) In Press

 
 Refereed articles
 

Bohigas, J. Escalante, V., Rodriguez, M., & Dufour, R. J. "Echelle spectroscopy and photoionization modelling of the entire planetary nebula NGC 6210." Monthly Notices of the Royal Astronomical SocietyIn Press

 
 

Dufour, R. J., Kwitter, K. B., Shaw, R. A., Henry, R. B. C., Balick, B., & Corradi, R. L. M. "Co-spatial Long-slit UV/Optical Spectra of Ten Galactic Planetary Nebulae with HST/STIS I. Description of the Observations, Global Emission-line Measurements, and CNO Abundances." The Astrophysical JournalIn Press

 
 

R.J. Dufour, R.B.C. Henry, B. Balick, K.B. Kwitter, R.A. Show, & R.L.M. Corradi " Co-spatial Long-slit UV/Optical Spectra of Ten Galactic Planetary Nebulaewith HST/STIS II. Nebular Models, Central Star Properties and CNO Synthesis." The Astrophysical JournalIn Progress

 
 

Revista Mexicana de Astronomia y Astrophysica, vol. 49, pp.227-238 (2013)

 
 

Bohigas, J., Dufour, R. J., Rodriguez, M., 2013, "The Last Eruption of the Planetary Nebula IC 2165," Revista Mexicana de Astronoma y Astrofsica, submitted.

 
 

Brunner, G. et al. "Warm Molecular Gas in M51: Mapping the Excitation Temperature and Mass of H_2 with the Spitzer Infrared Spectrograph." The Astrophysical Journal, 675 (2008) : 316-329.

 
 

Henry, R. B. C., Kwitter, K. B., Dufour, R. J. & Skinner, J. N. "A Multiwavelength Analysis of the Halo Planetary Nebula DdDm-1." The Astrophysical Journal, 680 (2008) : 1162-1173.

 
 

Rubin, R. H. et al. "Spitzer Observations of M33 and the Hot Star, H II Region Connection." Monthly Notices of the Royal Astronomical Society, 387 (2008) : 45-62.

 
 

Blagrave, K. P. M. et al. "Deviations from He I Case B Rcombination Theory and Extinction Corrections for the Orion Nebula." The Astrophysical Journal, 655 (2007) : 299-315.

 
 

Henry, R. B. C. et al. "A Multiwavelength Abundance Analysis of the Halo Planetary Nebula DdDm-1." The Astrophysical Journal (2007) In Revision

 
 

Rubin, R. H. et al. "Spitzer Observations of M33 and the Hot Star, HII Region Connection." Monthly Notices of the Royal Astronomical Society (2007) In Press

 
 

Rubin, R. H. et al. "Spitzer Observations of M83 and the Hot Star, HII Region Connection." Monthly Notices of the Royal Astronomical Society, 377 (2007) : 1407-1418.

 
 

Yost, S. A. et al. "Exploring Broadband GRB Behaviour during Gamma-Ray Emission." The Astrophysical Journal, 657 (2007) : 925-941.

 
 

Blagrave, K. P. M., Martin, P. G., Rubin, R. H., Ferland, G. J., Dufour, R. J., Baldwin, J. A., Hester, J. J., and Walter, D. K., "Decrement of Ultraviolet He I Lines and Extinction Corrections in the Orion Nebula." The Astrophysical JournalIn Press

 
 

Rubin, Robert. H., Simpson, Janet P., Colgan, Sean W. J., Dufour, Reginald J., Ray, Katherine L., Erickson, Edwin F., Hass, Michael, R., and Pauldrach, Adalbert W. A., "Spitzer Observations of M83 and the Hot Star, H II Region Connection." Monthly Notices of the Royal Astronomical SocietySubmitted

 
 

Yost, S. A.; Swan, H. F.; Rykoff, E. S.; Aharonian, F.; Akerlof, C. W.; Alday, A.; Ashley, M. C. B.; Barthelmy, S; Depoy, D. L.; Dufour, R. J.; Eastman, J. D.; Forgey, R. D.; Gehrels, N.; Halpern, J. P.; Hardin, L. C.; Horns, D.; Kzzzloglu, U.; Krimm, H. A.; Lepine, S.; Liang, E. P.; Marshall, J. L.; McKay, T. A.; Mineo, T.; Mirabal, N.; Ozel, M.; Phillips, A.; Prieto, J. L.; Quimby, R. M.; Romano, P.; Rowell, G.; Rujopakarn, W.; Schaefer, B. E.; Silverman, J. M.; Skinner, M.A.; Smith, D. A.; Smith, I. A.; Tonnesen, S.; Troja, E.; Vestrand, W. T.; Wheeler, J. C.; Wren, J., "Exploring Broadband GRB Behavior During X-ray Emission." The Astrophysical JournalIn Press

 
 

Buckalew, Brent A., Kobulnicky, Henry A., Dufour, Reginald J. "Comparison of Star Clusters With and Without Wolf-Rayet Stars in Wolf-Rayet Galaxies." The Astrophysical Journal Supplement Series, 157 (2005) : 30-58.

 
 

McCumber, Michael P., Garnett, Donald R., Dufour, Reginald J. "Stellar Populations in the Wing of the Small Magellanic Cloud from Hubble Space Telescope Photometry." The Astronomical Journal, 130 (2005) : 1083-1096.

 
 

Moore, Brian D., Dufour, Reginald J., Hester, J. Jeff, Scowen, Paul A. "New Hubble Space Telescope Observations of the Wolf-Rayet Nebula NGC 6888." The Astronomical Journal (2005) In Revision

 
 

Moore, B. D., Hester, J. J., and Dufour, R. J. "Systematic Errors in Elemental Abundances Derived from Nebular Spectra." The Astronomical Journal, 127 (2004/06) : 3484-3492.

 
 Refereed conference papers
 

Dufour, Reginald J., Sick, Jonathan N., Hartigan, Patrick M., Henry, Richard, B. C.,Kwitter, Karen B, and Bohigas, Joaquin, 2012, "3D Ionization Structure and Kinematics of NGC 2392," in Planetary Nebulae: An Eye to the Future, Proceedings of IAU Symposium No. 283, p. 348-349.

 
 

Dufour, R. J., Sick, J. N., Hartigan, P. M., Henry, R. B. C., Kwitter, K. & Bohigas, J. 2011, "3D Ionization Structure and Kinematics of NGC 2392," in Proceedings of IAU Symposium No. 283: Planetary Nebulae - an eye to the future, Cambridge Univ. Press, eds. A. Manchado, L. Stanghellini, & D. Schonberner

 
 

Rubin, R. H., McNabb, I. A., Simpson, J. P., Dufour, R. J., Pauldrach, A. W. A., Colgan, S. W. J., Craven, T. W., Gitterman, E. D., & Lo, C. C. "Spitzer Finds Cosmic Neon's and Sulfur's Sweet Spot: Part III, NGC 6822." Proceedings of the International Astronomical Union, IAU Symposium 265 (2010) : 249-250.

 
 

Smith, I. A., Dufour, R. J., Liang, E. P., Silverman, J. M., Hardin, L. C., Forgey, R. D., Skinner, M. A., Alday, A., & Ah You "The Rice University CCD Imager for Gamma-Ray Burst Studies." AMOS 2005 Technical Conference Proceedings (2005) In Press

 
 

Dufour, R. J., Henry, R. B. C., Kwitter, K. B., Buckalew, B. A., Moore, B. D., Bohigas, J., and Esteban, C. "C III] Imagery of Planetary Nebulae and Extragalactic H II Regions." Proceedings of the ESO Workshop on Planetary Nebulae beyond the Milky Way (2005/?) In Press

 
 Conference papers
 

"Spitzer Finds Cosmic Neon and Sulfur's Sweet Spot: Part III, NGC 6822" by R. H. Rubin et al. in Proceedings of IAU Symposium No. 265, Chemical Abundances in the Universe, 2009, in press.

 
 

"Observations of M33 HII Regions: the Ne/S ratio, metallicity, and ionization variations" by R. H. Rubin et al. in Proceedings of the Fourth Spitzer Science Conference, The Evolving ISM in the Milky Way and Nearby Galaxies, Eds. K. Sheth et al., published online at http://ssc.spitzer.caltech.edu/mtgs/ismevol/

 
 

"Observations of M33 HII Regions: the Ne/S ratio, metallicity, and ionization variations" by R. H. Rubin et al. in Proceedings of the Fourth Spitzer Science Conference, The Evolving ISM in the Milky Way and Nearby Galaxies, Eds. K. Sheth et al., published online at http://ssc.spitzer.caltech.edu/mtgs/ismevol/

 
 

"Observations of M33 HII Regions: the Ne/S ratio, metallicity, and ionization variations" by R. H. Rubin et al. in Proceedings of the Fourth Spitzer Science Conference, The Evolving ISM in the Milky Way and Nearby Galaxies, Eds. K. Sheth et al., published online at http://ssc.spitzer.caltech.edu/mtgs/ismevol/

 
 

"Observations of M33 HII Regions: the Ne/S ratio, metallicity, and ionization variations" by R. H. Rubin et al. in Proceedings of the Fourth Spitzer Science Conference, The Evolving ISM in the Milky Way and Nearby Galaxies, Eds. K. Sheth et al., published online at http://ssc.spitzer.caltech.edu/mtgs/ismevol/

 
 

"Observations of M33 HII Regions: the Ne/S ratio, metallicity, and ionization variations" by R. H. Rubin et al. in Proceedings of the Fourth Spitzer Science Conference, The Evolving ISM in the Milky Way and Nearby Galaxies, Eds. K. Sheth et al., published online at http://ssc.spitzer.caltech.edu/mtgs/ismevol/

 
 

Brian D. Moore, Reginald J. Dufour, Ravi Sankrit, and Jason P. Aufdenberg, "The Carbon Abundance in the Wolf-Rayet Shell Nebula NGC 6888." ASP Conference Series, 348 (2006) : 334-336.

 
 

Dufour, R. J., Henry, R. B. C., Kwitter, K. B., Buckalew, B. A., Moore, B. D., Bohigas, J., & Esteban, C. "C III] Imagery of Planetary Nebulae and H II Regions."  (2006) : 199-200.

 
 

Ian A. Smith, Reginald J. Dufour, Edison P. Liang, Jeffrey M. Silverman, Larry C. Hardin, Robert D. Forgey, Mark A. Skinner, Andrew Alday, Carl Akerlof, Heather Swan, Tim McKay, Eli Rykoff, Sarah Yost, "The Rice University CCD Imager for Gamma Ray Burst Studies." Proceedings of the 2006 AMOS Technical Conference

 
 

Moore, B. D., Dufour, Aufdenberg, J. "The Carbon Abundance in the Wolf-Rayet Ring Nebula NGC 6888." Proceedings of "Astrophysics in the Far Ultraviolet: Five Years of Discovery with FUSE." (2005/?) In Press

 
 

Smith, I. A., Dufour, R. J., Liang, E. P., Silverman, J. M., Hardin, L. C., Forgey, R. D., Skinner, M. A., and Ah You, S. "The Rice University CCD Imager for Gamma-Ray Burst Studies." Proceedings of the 2004 AMOS Conference (2005/?) In Press

 
Presentations
 Invited Talks
 

The spectroscopic "dark age" of Hubble and my current research with HST STIS on PNe, invited talk, Houston Astronomical Society, 2/7/2014

 
 

invited speaker.  "
HUBBLE'S BEST: MY PICS FOR THE TOP TEN PHOTOS AND RELATED SCIENCE." Astronomy Day 2013, George Observatory, Brazos Bend State Park. (October 12, 2013)

 
 

"ARE WE HERE BECAUSE OF PLANETARY NEBULAE?." South Coast Astronomy Group, Port Orford, Oregon. (June 11, 2013)

 
 

invited speaker.  "ARE WE HERE BECAUSE OF PLANETARY NEBULAE?

 ." Fort Bend Astronomy Club meeting, Houston Community College Southwest, Stafford, TX. (2/15/2013)

 
 

HST GO 12600: The Most Comprehensive Study of the UV Spectra of Galactic Planetary Nebulae to Date, contributed talk by R. Dufour, at "UV Astronomy: HST and Beyond," Kauai,Hawaii, june 18-21, 3012.

 
 

Dufour, R. J., "Fantastic Ways Stars & the Sun Die...and what they leave behind!," North Houston Astronomy Club, Kingwood College, Kingwood, TX, invited talk, 23 September 2011.

 
 

Dufour, R. J., "The Amazing Death of Stars," invited talk, Houston Astronomical Society, Univ. Houston, TX, 2 December 2011

 
 

Dufour, R. J., "The Fantastic Ways Stars Die," invited talk, Astronomy Day at George Observatory, Brazos Bend State Park, TX, 8 October 2011.

 
 

Dufour, R. J., 2011, "The New Cosmology," invited talk, South Coast Astronomy Group, Port Orford, OR, 17 October 2011.

 
 

speaker.  "Spitzer Space Telescope Observations of Sulfur and Neon Abundances in Extragalactic HII Regions." University of Kansas, Lawrence, Kansas. (10/25/2010)

 
 

speaker.  "Spitzer Space Telescope Observations of Sulfur and Neon Abundances in Extragalactic HII Regions." University of Oklahoma, Norman, Oklahoma. (2/11/2010)

 
 

"Looking Back in Time with the Hubble Space Telescope." visit by 270 mexican students as part of the SAIFA Program, Martel Commons, Rice University, Houston, TX. (22 October 2009)

 
 

"The New Cosmology." Houston Astronomical Society September Meeting, University of Houston, Houston, TX. (4 September 2009)

 
 

presenter.  "Black holes, Dark Matter, and Dark Energy in the Universe." Southwestern Oregon Community College, Coos Bay, Oregon. (2008 April)

 
 

presenter.  "The Origin and Evolution of Galaxies From Hubble Space Telescope Observations Back in Time." Astronomy Day 2008 at George Observatory, Brazos Bend State Park, Texas. (2008 October)

 
 

"HST Imagery of Five Planetary Nebulae in CIII] 1909A and Optical Lines." Deep Spectroscopy and Modeling of Emission Line Nebulae, Beijing, China. (16-18 April 2007)

 
 

"The Dark Universe." Astronomy Day 2007, George Observatoyr, Brazos Bend State Park, TX. (October 2007)

 
 

"The Life Cycle of the Sun and Stars,." Astronomy Day 2006, George Observatory, Brazos Bend State Park. (October 28, 2006)

 
 

"Systematic Errors in Elemental Abundances Derived from Nebular Spectra." Ninth Texas-Mexico Conference on Astrophysics, San Antonio, TX. (15 April 2005) With Brian D. Moore

 
 

"The Life and Death of the Sun and Stars." Astronomy Day 2005, George Observatory, Brazos Bend State Park. (15 October 2005)

 
 

"The Rice University CCD Imager for Gamma-Ray Burst Studies." AMOS 2005 Technical Conference, Wailea, Maui. (5-9 September 2005) With Smith, I. A., Liang, E. P., Silverman, J. M., Hardin, L. C., Forgey, R. D., Skinner, M. A., Alday, A., & Ah You, S.

 
 

Presentor.  "Hubble Space Telescope Observations of Planetary Nebulae." Sam Houston State University, Huntsville, TX. (2004 October)

 
 

Contributor.  "The Rice University CCD Imager for Gamma-Ray Burst Studies." 2004 AMOS Conference, Maui, Hawaii. (2004 September) With Smith, I. A., Liang, E. P., Silverman, J. M., Hardin, L. C., Forgey, R. J., Skinner, M. A., and Ah You, S.

 
 Keynote Speaker
 

keynote speaker.  "THE SCIENTIFIC LEGACY OF THE HUBBLE SPACE TELESCOPE." Annual All Houston Area Astronomy Clubs Meeting, Houston Museum of Natural Sciences. (October 11, 2013)

 
 Lectures
 

Dufour, R. J., "Fantastic Ways Stars Die and What They Leave Behind," Southwest Oregon Community College, Coos Bay, OR, 12 August 2011.

 
 

speaker.  "Untangling the 3D Structure of a Planetary Nebula." University of Oklahoma, Norman, Oklahoma. (2/12/2010)

 
 

"Mysteries of the Universe and the Dark Night Sky." Southwestern Oregon Community College, Coos Bay, Oregon. (5 March 2009)

 
 

"New Spitzer Results for Neon and Sulfur in NGC 6822." Astronomical Unit Seminars, Herman Brown Hall, Rice University, Houston, TX. (7 October 2009)

 
 

"The New Cosmology." Southwestern Oregon Community College, Coos Bay, Oregon. (11 August 2009)

 
 

presenter.  "HST Spectroscopy and Motions of Ejecta Around Eta Carinae." Department of Astronomy, University of Texas, Austin, TX.

 
 

presenter.  "Origin of the Solar System and our Galaxy." Southwestern Oregon Community College, Coos Bay, Oregon. (2008 April)

 
 

presenter.  "Spitzer Observations of Ne and S in M33 and M83." Department of Astronomy, University of Texas, Austin, TX. (2008 November)

 
 

"A Journey Through Space and Time." Southwest Oregon Community College, Cos Bay, Oregon. (March 2007)

 
 

"Research Using the Spitzer Space Telescope." Houston Astronomical Society, University of Houston Main Campus. (March 2007)

 
 

"The Life Cycle of the Sun and Stars,." Southwestern Oregon Community College Public Lecture Series, Bandon, OR. (November 6, 2006)

 
 

Lecturer.  "XGALPN - Not X-rays but Ejecta from White Dwarfs at Megaparsec Distances." The Astronomical Unit, Rice University, Houston, TX. (2004 October)

 
 Posters
 

First Results from HST19 GO12600: CNO Abundances in Seven Milky Way Planetary Nebulae, by K. B. Kwitter, Dufour, R. J., Shaw, R. A., Henry, R. B. C., Balick, B. & Corradi, R.; poster, 224th AAS meeting, Boston, June 2014.

 
 

Observations Of Planetary Nebula NGC 3242 Using STIS From HST19 GO 12600, by Miller, T. R., Dufour, R. J., Henry, R. B. C., Kwitter, K. B., Shaw, R. A., Balick, B., Corradi, R, presented at 224th AAS Meeting, Boston, June 2014

 
 

Rubin, R. H., Kader, J. A., Sivaraja, V, Simpson, J. P., Pauldrach, Aa. W. A., Dufour, R. J., Colgan, S. W. J., McNabb, I. A, Zhuge, S. Y., & Kalyanasundaram, V., "Spitzer Observations of H II Regions in NGC 6822 and the Hot Star - H II Region Connection," poster, American Astronomical Society Meeting No. 220, May 2012.

 
 

Virus-P Integral Field Spectroscopy of NGC 3310, by Kathryn Powell, Reginald Dufour, Karen Kwitter, and Paul Robertson, 2012,  poster at 221st AAS meeting, Long Beach, CA, June 8-11.

 
 

Dufour, R. J., Sick, J. N., Hartigan, P. M., Henry, R. C. B., Kwitter, K. & Bohigas, J. 2011, "3D Ionization Structure and Kinematics of NGC 2392," poster, IAU Symposium No. 283: Planetary Nebulae, Puerto de la Cruz, Tenerife, Spain, 25-29 July 2011.

 
 

Powell, K. & Dufour, R. J. "Composition of the Orion Nebula from Hubble Space Telescope Spectra," poster, Rice Undergraduate Research Symposium, Houston, TX, 15 April 2011.

 
 

"Spitzer Finds Cosmic Neon and Sulfur's Sweet Spot: Part II, NGC 6822." IAU Symposium No. 265 "Chemical Abundances in the Universe", Rio de Janeiro, Brazil. (10-14 August 2009) With R. Rubin, J. Simpson, I. McNabb, A. Pauldrach, S. Colgan, T. Craven, E. Gitterman, & C. Lo.

 
 

contributor.  "A Multiwavelength Abundance Analysis of the Halo Planetary Nebbula DdDm-1." 211th meeting of the American Astronomical Society, Austin, Texas. (2008 January) With J. N. Skinner et al.

 
 

presenter.  "Imagery of Planetary Nebulae in the C III] 1909 Angstrom Emission Line." 211th meeting of the American Astronomical Society, Austin, Texas. (2008 January) With R. C. B. Henry et al.

 
 

advisor.  "Mapping the Spatial Distribution of Molecular Hydrogen and PAH Emission in Nearby Galaxies with the Spitzer Infrared Spectrograph." 211th meeting of the American Astronomical Society, Austin, Texas. (2008 January) With G. Brunner et al.

 
 

"Mapping the Sptatial Distribution of Warm H_2 in Nearby Galaxies with the Spitzer IRS." Pasadena, CA, December 2007.

 
 

"Observations of M33 HII Regions: the Ne/S Ratio, Metallicity, and Ionization Variations." Fourth Spitzer Science Center Conference, Pasadena, CA. (December 2007)

 
 

"Spitzer Observations of M33 & M83 and the Hot Star H II Region Connection,." IAU Symposium No. 234: Planetary Nebulae in Our Galaxy and Beyond, Big Island, Hawaii. (April 3-7, 2006) With Rubin, R. H., Simpson, J. P., Colgan, S. W. J., Erickson, E. F., Haas, M. R., & Pauldrach, A. W. A.

 
 

"Spitzer Observations of M33 & M83 and the Hot Star, H II Region Connection." IAU Symposium 235: Galaxy Evolution Across the Hubble Time, Prague, Checkoslovakia. (14-17 August 2006) With R. Rubin, J. Simpson, S. Colgan, R. Citron, K. Ray, E. Erickson, M. Haas, and A. Pauldrach

 
 

primary presenter.  "CIII] Imagery of Planetary Nebulae and Extragalactic H II Regions." Ninth Texas-Mexico Conference on Astrophysics, San Antonio, TX. (13-16 April 2005) With Henry, R. B. C., Kwitter, K. B., Buckalew, B. A., Moore, B. D., Bohigas, J., Esteban, C.

 
 

primary presenter.  "The Rice University CCD Imager for the AEOS Telescope." Ninth Texas-Mexico Conference on Astrophysics, San Antonio, TX. (13-16 April 2005) With Smith, I. A., Liang, E. P., Hardin, L. C. et al.

 
 

Presentor.  "C III] Imagery of Planetary Nebulae and Extragalactic H II Regions." Planetary Nebulae beyond the Milky Way, Garchin, Germany. (2004 May) With Henry, R. B. C., Kwitter, K. B., Buckalew, B. A., Moore, B. D., Bohigas, J. and Esteban, C.

 
 

Presentor.  "C III] Imagery of Planetary Nebulae and H II Regions." 204th AAS Meeting, Denver, CO. (2004 June) With Henry, R. B. C., Kwitter, K. B., Buckalew, B. A., Moore, B. D., Bohigas, J., and Esteban, C.

 
 

Co-presentor.  "The Carbon Abundance in the Wolf-Rayet Shell Nebula NGC 6888." Astrophysics in the Far Ultraviolet, Victoria, B.C., Canada. (2004 August) With B. D. Moore, R. Sankrit, and J. P. Aufdenberg

 
 

Creator.  "The Rice University CCD Imager for the AEOS Telescope." Astrocon 2004, Berkeley, CA. (2004 July) With Smith, I. A., Liang, E. P., Hardin, L. C., et al.

 
 Seminar Speaker
 

HST GO 12600: The Most Comprehensive Study of the UV Spectra of Galactic Planetary Nebulae to Date, by R. Dufour, Astronomical Unit Seminar, Rice University, 28 November 2012.

 
 

Powell, K. & Dufour, R. J., "Composition of the Orion Nebula," oral presentation, Texas Undergraduate Astronomy Research Symposium, Univ. Texas, Austin, TX, 23 September 2011.

 
 

Dufour, R. J., "The IAU Symposium No. 283 on Planetary Nebulae," oral presentation, The Astronomical Unit Seminar, Rice University, Houston, TX, 31 August 2011.

 
 

speaker.  "Searching for the Holy Grail of Metal-Rich HII Regions." The Astronomical Unit, Rice University. (8/22/2010)

 
 

presentor.  "The Photoionization Structure of NGC 2392." University of Kansas, Lawrence, Kansas. (10/26/2010)

 
 

presenter.  "NEON AND SULFUR IN THE UNIVERSE: OBSERVATIONS WITH SPITZER." The Astronomical Unit, Rice University, Houston, Texas. (2008 November)

 
 

"The Origins and Chemical Evolution of Carbon in the Universe,." Astronomical Unit Seminar, Rice University. (September 20, 2006)

 
Editorial Positions
 Series Editor, ISRN Astronomy and Astrophysics. Hindawi Publishing Corporation. (2012 - 2014)

 Member of the Editorial Board, ISRN Astronomy and Astrophysics. Hindawi Publishing Corporation. (2010 - 2010)

 Series Editor, ISRN Astronomy and Astrophysics. Hindawi Publishing Corporation. (2013 - 2014)

Residencies & Summer Festivals
 Summer Festival
 Planetary Nebula Research Retreat and Workshop. This was a meeting of collaborators in planetary nebulae research projects for annual reviews of research and planning of future research projects., Whiteley Center, Friday Harbor, Washington. (24-38 July 2009)
I gave two presentations during the meetings: "Spitzer Research on IR Spectroscopy of Extragalactic HII Regions" and "The Structure and Kinematics of the Eskimo Nebula"