I have been interested in trying to understand many aspects of star
formation, as well as related problems of galaxy formation and the evolution
of galaxies .  A good idea of the range of my research interests can be obtained
by looking at a list of my recent publications .

    A problem that has interested me for many years is that of understanding
the distribution of masses with which stars are formed, or the stellar initial
mass function (IMF), which is of central interest in many areas of
astrophysics.  Several papers and reviews on various aspects this subject are
listed here .  An aspect of much current interest concerns early star formation
and the question of whether the stars formed at early cosmological times
were predominantly massive, as is suggested by some recent theoretical
work; some recent papers on this subject are listed here .

    Most, if not all, stars form in binary or multiple systems or clusters ,
and an understanding of the formation of these systems is essential for
understanding star formation and the origin of the IMF.  Protostellar
interactions in such systems may play an important role in the star
formation process itself by redistributing angular momentum and driving
continuing accretion.  Some recent papers on these topics are listed here .
A number of broader reviews on star formation are listed here .

    The problems of galaxy formation and star formation are closely related,
and I have also been interested in the formation and evolution of galaxies .
Since globular clusters provide fossil evidence regarding the processes of
galaxy formation, it is also of interest to understand globular cluster
formation .    Several papers and reviews on the formation of galaxies and
clusters are listed here .