Professor of Astronomy, Wesleyan University

I am a professional astronomer and John Monroe Van Vleck Professor of Astronomy at Wesleyan University in Middletown, CT, where I have been employed since 1978. My research interests are in the field of star and planet formation. My Ph.D. thesis work at the University of Toronto involved a study of stars in southern reflection nebulae and led to the discovery of a good example of supernova-induced star formation -- an association of reflection nebulae known as CMa R1. This is of particular interest because isotopic evidence in meteorites suggests that radioactive material from a nearby supernova was present in our own solar system as the planets were forming. Most of this work was done while I was a Carnegie Fellow at the Carnegie Institution of Washington’s Department of Terrestrial Magnetism in collaboration with George Assousa. Two papers that report this work for professional and semi-professional audiences are:


  • –present
    Professor of Astronomy, Wesleyan University
  • 1976–1978
    Postdoctoral fellow, Carnegie Institution DTM
  • 1974–1976
    Postdoctoral fellow, York University CRESS


  • 1974 
    Ph.D., University of Toronto
  • 1970 
    AB (Astrophysics), Princeton University

Grants and Contracts

  • 2016
    A New Model for Chondrule Formation
    co-PI with J. Greenwood
    Funding Source:
    National Aeronautics and Space Administration