Doctor of Philosophy, University Paris, 1969.
Postdoctoral fellow University California, San Diego, 1968-1969. Chargeé de recherches University Paris, 1969-1971. Research scientist, assistant professor University Texas, Austin, 1971-1977.
Senior scientist European Southern Observatory, Garching, Federal Republic Germany, since 1977.
Member International Astronomical Union, American Astronomical Society, American Association for the Advancement of Science, Eurosci., European Astronomical Society.
Married Bruce T. Ulrich, September 26, 1970 (divorced 1983). Married Halton C. Arp, January 19, 1984. 1 child, Delina.