Selected Papers

• Abundances of Planetary Nebulae in the Outer Disk of M31, Kwitter, K.B., Lehman, E.M.M. (Williams '10), Balick, B., & Henry, R.B.C. 2012, Ap.J., 752, in press.
  
  
• Reduce, Reuse, Recycle: Planetary Nebulae as Green Galactic Citizens, K.B. Kwitter and R.B.C. Henry, invited review, to appear in Proceedings of IAU Symposium #283, Planetary Nebulae: An Eye to the Future, held in the Canary Islands, July 2011.
  
  
• Abundances of Galactic Anticenter Planetary Nebulae and the Oxygen Abundance Gradient in the Galactic Disk, Henry, R.B.C., Kwitter, K.B., Jaskot, A.E. (Williams '08), Balick, B., Morrison, M., & Milingo, J.B., Ap.J., 724, 748, 2010.
  
  
• Alpha Element Abundances in a Large Sample of Galactic Planetary Nebulae, Milingo, J.B., Kwitter, K. B., Henry, R.B.C., & Souza, S.P., Ap.J., 711, 619, 2010.
  
  
• A Multiwavelength Analysis of the Halo Planetary Nebula DdDm-1, Henry, R.B.C., Kwitter, K.B., Dufour, R. J. & Skinner, J. N., Ap.J., 680, 1162, 2008.
  
  
• The Shaping of Planetary Nebula Sh2-188 through Interaction with the Interstellar Medium, Wareing, C.J., O'Brien, T.J., Zijlstra, A., Kwitter, K.B., Irwin, J., Wright, N., Greimel, R., & Drew, J.E., Mon. Not. R.A.S., 366, 387, 2006.
  
  
• Sulfur, Chlorine and Argon Abundances in Planetary Nebulae. IV. Synthesis and the Sulfur Anomaly, Henry, R.B.C., Kwitter, K.B., & Balick, B., A.J., 127, 2284, 2004.
  
  
• Sulfur, Chlorine and Argon Abundances in Planetary Nebulae. III. Observations and Results for a Final Sample, Kwitter, K.B., Henry, R.B.C., & Milingo, J.B., Pub. Astr. Soc. Pac., 115, 80. 2003.
  
  
• Sulfur, Chlorine and Argon Abundances in Planetary Nebulae. IIB. Abundances in a Southern sample, Milingo, J.B., Henry, R.B.C., & Kwitter, K.B., Ap.J. Suppl., 138, 285, 2002.
  
  
• Sulfur, Chlorine and Argon Abundances in Planetary Nebulae. IIA. Observations of a Southern Sample, Milingo, J.B., Kwitter, K.B., Henry, R.B.C., & Cohen, R.E. (Wesleyan '03), Ap.J.Suppl., 138, 279, 2002.
  
  
• Sulfur, Chlorine and Argon Abundances in Planetary Nebulae. I. Observations and Abundances in a Northern Sample, Kwitter, K.B., & Henry, R.B.C., Ap.J., 562, 804, 2001.
  
  
• A New Look at Carbon Abundances in Planetary Nebulae: IV. Implications for Stellar Nucleosynthesis, Henry, R.B.C., Kwitter, K.B., & Bates, J.A. (Williams '98), Ap.J., 531, 928, 2000.
  
  
• Morphology and Composition of the Helix Nebula, Henry, R.B.C, Kwitter, K.B., & Dufour, R.J., Ap.J., 517, 767, 1999.
  
  
• A New Look at Carbon Abundances in Planetary Nebulae: III. DDDM1, IC 3568, IC 4593, NGC 6210, NGC 6720, NGC 6826, & NGC 7009, Kwitter, K.B., and Henry, R.B.C., Ap.J., 493, 247, 1998.
  
  
• An Atlas of Ancient Planetary Nebulae and Their Interaction with the ISM, Tweedy, R.W., and Kwitter, K.B., Ap.J. Suppl., 107, 1996.
  
  
• A New Look at Carbon Abundances in Planetary Nebulae: II. BB-1, NGC 650, NGC 1535, NGC 2440, & NGC 7027, Kwitter, K.B., and Henry, R.B.C., Ap.J., 473, 304, 1996.
  
  
• The Planetary Nebulae in NGC 6441 and Pal 6, Jacoby, G.H., Fullton, L.K., Morse, J., Kwitter, K.B., & Henry, R.B.C., A.J., 114, 2611, 1998.
  
  
• A New Look at Carbon Abundances in Planetary Nebulae: I. PB6, Hu2-1, K648, and H4-1, Henry, R.B.C., Kwitter, K.B., and Howard, J.W., Ap.J., 458, 215, 1996.
  
  

Books

Earth Science: Exploring Earth and Space, K. Kwitter, D. Roberts, & B. Zimmerman 1992, Globe Book Co. - a junior high school text.

Atmosphere and Weather, K. Kwitter & S. Souza, 1998.
Force and Motion, S. Souza & K. Kwitter, 1999.
The Solar System, S. Souza & K. Kwitter, 1999.

These are three books in the "Hands-On Science" activity series published by J. Weston Walch for junior high and high school students. These were written with Steven Souza, Observatory Supervisor and Lecturer in the Astronomy Department.

Prof. K. Kwitter's home page
Williams Astronomy and Astrophysics