I have been retired since July 2009, but I try to continue my research
(see below). If you are interested, you
may wish to peruse my shortened CV.
In short, my professional life spanned between Warsaw, Poland (1965 - 1984)
and Toronto, Canada (1984 - now), but with several longer stays in other
places: Post-Doc in Gainesville, Florida (1970 - 1971), the Plaskett Fellowship
the first awarded) in the Dominion Astrophysical Observatory,
Victoria, B.C. (1975 - 1977), Max Planck Institute, Munich (1980 - 1982), and the Institute of
Astronomy, Cambridge University (1982 - 1984).
In 1997 - 1998, I worked as the Canadian Resident Astronomer
at the Canada-France-Hawaii Telescope in Hawaii. In Toronto, I worked in
the Institute for Space and Terrestrial Science (1987 - 1997), while
most of the time (1984 - 2009) I was associated with the University
of Toronto. In 1999 - 2008, I managed the David Dunlap Observatory (DDO)
before its closure on July 2, 2008.
A Wikipedia article gives similar information as the current page in Polish.
An interview for The Star Formation Newsletter edited by Dr. Bo Reipurth is focused on my work on young stars.
My research has been related mostly to the problem of the angular momentum evolution in binary stars, from the stage of formation to their coalescence. I also worked some time ago on the interstellar polarization, star formation, proto-stellar disks and stellar atmospheres, but most of my work currently is related to binary stars, especially contact binary stars. The last, larger project done at the David Dunlap Observatory using the DDO 1.88m telescope was a systematic spectroscopic survey of bright close binary stars with periods shorter than 1 day. I developed the Broadening Function approach for the DDO spectroscopic data and for similar uses; it gives far superior results to the Cross-Correlation Function. The MOST satellite project ended its long and profitable life and I am now very involved in another satellite project BRITE which was also started in Canada. I was the early leader of the Canadian team of the BRITE Canadian Team (see a PDF description) and am now a member of the international committee overseeing BRITE Constellation operations. My other interest are large variable-star databases, particularly those from micro-lensing surveys such as OGLE or MACHO. For more details on my work, please see my publications as listed below.
A successful proposal to the Canadian Space Agency in 1997
(with Dr. Kieran Carroll of Dynacon, Toronto and University of Toronto
Institute for Aerospace Studies (UTIAS)) initiated the MOST micro-satellite
The MOST project has been led by Prof.J.Matthews at the
University of British Columbia (see:
UTIAS Space Flight Lab,
Dynacon in Toronto).
The satellite was launched in 2003 and was funded through 2014.
It still performs very well, although only through external funding
which can be arranged by contacts with the project PI.
In addition to ~200 individual target observations lasting typically a few weeks,
the satellite observed >2000 secondary targets which remain to be
In 2003, prompted by a question of Dr.R.Zee from the
UTIAS Space Flight Lab,
I initiated a project to develop a very small nano-satellite
for astronomy, the "BRIght Target Explorer", or "BRITE".
A single BRITE is a cube with side dimensions of 20cm and
with a small lens telescope. The goal was to observe
variability of at least 300 brightest stars to 3.5 - 4.5 magnitude
with accuracy better than 0.1%.
variability of the brightest stars has been relatively poorly
known due to difficulties with relative photometry
over large angular distances in the sky, in the presence of variable
atmospheric extinction and thin clouds.
Majority of the brightest stars in the sky are in fact the ones which
are intrinsically the most luminous as the range in stellar luminosities
easily over-compensates the Euclidian 1/r^2 effect. Thus, the
project main targets are massive, luminous stars which are of the
highest importance for evolution of the Universe in terms of production and
enrichment of the matter in elements heavier than hydrogen and helium.
BRITE is one (
CanX-3) in a series nano-satellites built at
A PPT presentation from 2005 gives a description of the original idea; for further design features, please consult other pages given there.
The Canadian BRITE's were the last to be funded: The
Austrian colleagues have been able to arrange funding for
two BRITE satellites in 2009; they
were launched in 2013 and 2014. Poland secured funding soon after and added
satellites to form the BRITE constellation; the satellites
"Lem" and "Heweliusz" were launched in 2013 and 2014.
Since August 2014, the BRITE Constellation consists of 5 satellites
with only one Canadian satellite "Toronto"; unfortunately, the second satellite,
"Montreal" did not separate from its launching rocket.
There have been interest from other countries
in joining the constellation. For more information about
the early history of the BRITE project,
read a few documents (PDF format) .
By the decision of the President of Poland in May 2015, I was decorated in September 2015 by the Officer's Cross of the Order of Polonia Restituta for my contributions to the BRITE project; the nano-satellites "Lem" and "Heweliusz" are the first Polish research satellites.
I have been the member of the Polish Astronomical Society since 1966, of the International Astronomical Union since 1973 and of the Canadian Astronomical Society since 1985. I was the Vice President (2003) and then President (2006) of the International Astronomical Union Commission 42 (Close Binary Stars).
Most of the publications are accessible through the ADS database, although access to the recent ones may be restricted to only through libraries.
The postal address is:
Department of Astronomy & Astrophysics
University of Toronto
50 St. George Street
Toronto, Ontario, Canada M5S 3H4.
Better than using my UofT postal address, please contact me using my
(replace _AT_ by the correct character) because I work mostly at home.
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