Department of Astronomy & Astrophysics
University of Toronto
50 St. George Street (Room 101)
Toronto, Ontario, Canada M5S 3H4
stefan -at- astro.utoronto.ca
My research interests have included:
Space Astronomy: Development of detector systems for small astronomical satellites. Photometric analysis methods.
Binary Stars: Computation of theoretical light curves and line profiles, and fitting models to observations. Structure of contact binary stars. Mapping of Starspots. Search for binaries in galactic clusters and the Magellanic Clouds.
Stellar Evolution: Observation of those close binary stars which provide important clues to the evolution of binary stars in general. Development of theoretical models to explain the observations. Interpretation of blue straggler observations.
Stellar Spectroscopy: Observation of flare stars and eruptive variables to study their outburst mechanisms. M dwarfs: activity, radial velocities, rotation.
Galaxies: Area photometry of central regions to study dynamics. Spectroscopy of globular clusters to trace out dark matter in external galaxies.
Instrumentation: Development of detectors for
observation with electronic techniques. Development of
versatile computer programmes for instrument control and the
reduction and analysis of observations. Application of digital
telecommunications and microcomputers to astronomy.
Development of low‑cost image processing system. Automation of
small telescopes and observatories. Construction and
commissioning of spectrographs. Development of nanosatellite
for high-precision photometry from space.
My teaching activities:
Undergraduate courses at levels, for astrophysics specialists as well as for non-science students in the first and second year of their studies, in some years in classes of more than 1000 students. At the graduate level, I have taught observational techniques and stellar physics.
Useful old DDO pages
Data on the DDO instruments, needed for reductions here.
The scanned DDO logbooks for the years 1935-1998 are here.
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