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
E DUCATION
Ph.D. University of Colorado, Astrophysical and Planetary Sciences,
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,
GPA 3.741
B.S. University of Wisconsin-Madison, Astronomy & Physics,
GPA 3.725, Graduated with Distinction
R ESEARCH E XPERIENCE
Southwest Research Institute, Department of Space Studies,
Research Scientist
University of Colorado, Laboratory for Atmospheric and Space Physics,
Research Assistant
University of Wisconsin-Madison, Department of Physics,
Undergraduate Research Assistant
May 2005
May 2002
May 1999
2005 – present
2000 - 2005
1996 - 1999
M EMBERSHIP IN P ROFESSIONAL S OCIETIES
American Astronomical Society, Division for Planetary Science
American Geophysical Union
H ONORS
Asteroid 1979 MC2 named 6814 Steffl
Grad. Student Fellowship, Dept. of Astrophysical & Planetary Science, Univ.of Colorado
T EACHING E XPERIENCE
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
R EFEREED P UBLICATIONS
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.
P UBLICATIONS
IN
P RESS
AND IN
P REPARATION
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.