Andrew J. Steffl

Southwest Research Institute • Department of Space Studies

1050 Walnut St., Suite 300 • Boulder, CO 80302

Phone: 303-546-9670 • Fax: 303-546-9687

http://boulder.swri.edu/~steffl

steffl [at] boulder.swri.edu

Education

Ph.D. University of Colorado, Astrophysical and Planetary Sciences, May 2005

Thesis: The Io Plasma Torus During the Cassini Encounter with Jupiter: Temporal Radial and Azimuthal Variations

M.S. University of Colorado, Astrophysical and Planetary Sciences, May 2002

GPA 3.741

B.S. University of Wisconsin-Madison, Astronomy & Physics, May 1999

GPA 3.725, Graduated with Distinction

Research Experience

Southwest Research Institute, Department of Space Studies, 2005 – present

Research Scientist

University of Colorado, Laboratory for Atmospheric and Space Physics, 2000 - 2005

Research Assistant

University of Wisconsin-Madison, Department of Physics, 1996 - 1999

Undergraduate Research Assistant

Membership in Professional Societies

American Astronomical Society, Division for Planetary Science

American Geophysical Union

Honors

Asteroid 1979 MC2 named 6814 Steffl

Grad. Student Fellowship, Dept. of Astrophysical & Planetary Science, Univ.of Colorado

Teaching Experience

University of Colorado, 1999 - 2005

Graduate Teacher Training Program

University of Colorado, Department of Astrophysics and Planetary Science

Instructor, ASTR 1110 General Astronomy: The Solar System, Summer 2004

Teaching Assistant, ASTR 3510 Observations and Instrumentation I, Fall 2001

Teaching Assistant, ASTR 1010 Introductory Astronomy I, Spring 2000

Teaching Assistant, ASTR 1110 General Astronomy: The Solar System, Fall 1999

University of Wisconsin-Madison, Peer Mentor Tutor Program 1998 - 1999

Small Group Tutor

Refereed Publications

Steffl, A. J.,P. A. Delamere, and F. Bagenal, Cassini UVIS observations of the Io plasma torus IV. Modeling temporal and azimuthal variability, Icarus, 194, 153-165, 2008.

Retherford, K.D., J. R. Spencer, S. A. Stern, J. Saur, D. F. Strobel, A. J. Steffl, G. R. Gladstone, H. A. Weaver, A. F. Cheng, J. Wm. Parker, D. C. Slater, M. H. Versteeg, M. W. Davis, F. Bagenal, H. B. Throop, R. M. C. Lopes, D. C. Reuter, A. Lunsford, S. J. Conard, L. A. Young, and J. M. Moore, Io’s Atmospheric Response to Eclipse: UV Aurorae Observations, Science, 318, 237-240, 2007.

Gladstone, G.R., S. A. Stern, D. C. Slater, M. Versteeg, M. W. Davis, K. D. Retherford, L. A. Young, A. J. Steffl, H. Throop, J. Wm. Parker, H. A. Weaver, A. F. Cheng, G. S. Orton, J. T. Clarke, J. D. Nichols, Jupiter’s Nightside Airglow and Aurora, Science, 318, 229-231, 2007.

Steffl, A.J. and S.A. Stern, First Constraints on Rings in the Pluto System, Astron. J., 133, 1485-1489, 2007.

Feldman, P. D., S. A. Stern, A.J. Steffl, J. Wm. Parker, D.C. Slater, M.F. A'Hearn, J.-L. Bertaux, and M.C. Festou, Ultraviolet spectroscopy of Comet 9P/Tempel 1 with Alice/Rosetta during the Deep Impact encounter, Icarus, 191, 258-262, 2007.

Steffl, A.J., M.J. Mutchler, H.A. Weaver, S.A. Stern, D.D. Durda, D. Terrell, W.J. Merline, L.A. Young, E.F. Young, M.W. Buie, and J.R. Spencer, New Constraints on Additional Satellites of the Pluto System, Astron. J., 132, 614-619.

Stern, S. A., H. A. Weaver, A. J. Steffl, M. J. Mutchler, W. J. Merline, M. W. Buie, E. F. Young, L. A. Young, and J. R. Spencer, A giant impact origin for Pluto’s small moons and satellite multiplicity in the Kuiper belt, Nature, 439, 946–948, 2006.

Weaver, H. A., S. A. Stern, M. J. Mutchler, A. J. Steffl, M. W. Buie, W. J. Merline, J. R. Spencer, E. F. Young, and L. A. Young, Discovery of two new satellites of Pluto, Nature, 439, 943–945, 2006.

Steffl, A. J., P. A. Delamere, and F. Bagenal, Cassini UVIS observations of the Io plasma torus. III. Observations of Temporal and Azimuthal Variability, Icarus, 180, 124–140, 2006.

Delamere, P. A., F. Bagenal, and A. J. Steffl, Radial variations in the Io plasma torus during the Cassini era, J. Geophys. Res., 110, 12,223-12,236, 2005.

Pryor, W. R., et al., Cassini UVIS observations of Jupiter’s auroral variability, Icarus, 178, 312–326, 2005.

Steffl, A. J., F. Bagenal, and A. I. F. Stewart, Cassini UVIS observations of the Io plasma torus. II. Radial variations, Icarus, 172, 91–103, 2004b.

Steffl, A. J., A. I. F. Stewart, and F. Bagenal, Cassini UVIS observations of the Io plasma torus. I. Initial results, Icarus, 172, 78–90, 2004a.

Delamere, P. A., A. Steffl, and F. Bagenal, Modeling temporal variability of plasma conditions in the Io torus during the Cassini era, J. Geophys. Res., 109, 10,216–10,224, 2004.

Publications in Press and in Preparation

Greathouse, G. R. Gladstone, J. I. Moses, R.J. Vervack Jr., S. A. Stern, D. C. Slater, M. H. Versteeg, M. W. Davis, K. D. Retherford, L. A. Young, A. J. Steffl, H. Throop, and J. Wm. Parker, New Horizons Alice ultraviolet observations of a stellar occultation by Jupiter’s atmosphere, Icarus, Submitted.

Parker, J. Wm., S.A. Stern, D.C. Slater, J. Scherrer, J. Stone, M.Versteeg, A.J. Steffl, M.F. A'Hearn, J.L. Bertaux, P.D. Feldman, M.C. Festou, H.A. Weaver, and O.H. Siegmund, Alice: The Rosetta ultraviolet imaging spectrograph, Submitted.

Stern, S. A., M. J. Mutchler, H. A. Weaver, and A. J. Steffl, The positions, colors and photometric variability of Pluto’s small satellites from HST observations in 2005-2006, Astron. J., Submitted.